DK179015B1 - Protection against contamination of an orifice, spacer and method of safeguard against contamination of an orifice - Google Patents
Protection against contamination of an orifice, spacer and method of safeguard against contamination of an orifice Download PDFInfo
- Publication number
- DK179015B1 DK179015B1 DKPA201570599A DKPA201570599A DK179015B1 DK 179015 B1 DK179015 B1 DK 179015B1 DK PA201570599 A DKPA201570599 A DK PA201570599A DK PA201570599 A DKPA201570599 A DK PA201570599A DK 179015 B1 DK179015 B1 DK 179015B1
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- DK
- Denmark
- Prior art keywords
- opening
- machine part
- belt
- groove
- plug
- Prior art date
Links
- 238000011109 contamination Methods 0.000 title claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 5
- 239000000463 material Substances 0.000 claims description 21
- 230000007704 transition Effects 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M7/00—Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/004—Sealing; Insulation
Abstract
Sikring mod forurening af en åbning i en udvendig overflade på en langstrakt maskindel. Ifølge opfindelsen er et fleksibelt rundgående ubrudt bånd tilvejebragt hen over åbning og mod den udvendige overflade hvorved båndet enten i sig selv dækker åbningen eller holder en prop fast i åbningen eller er fremstillet ud i et stykke med en prop, som passer formsluttende ned i åbningen.Protection against contamination of an opening in an outer surface of an elongated machine part. According to the invention, a flexible circular unbroken band is provided over opening and towards the outer surface whereby the band either itself covers the opening or holds a plug in the opening or is made out of a piece with a plug that fits moldably down into the opening.
Description
Sikring mod forurening af en åbning, afstandsstvkke og fremgangsmåde til sikring mod forurening af en åbningProtection against pollution of an orifice, spacer and method of protection against pollution of an orifice
Opfindelsen angår en sikring mod forurening af en åbning i en udvendig overflade på en langstrakt maskindel. Maskindelens overflade må danne en lukket kurve omkring en længdeakse heraf, således at et ubrudt bånd kan bringes til at omslutte maskindelen i et plan vinkelret på længdeaksen. I fødevare-, medicinal- og foderproduktionsanlæg er der særlige krav til sikring af høj hygiejnisk standart. Det har været foreslået i WO2014075678 (A1) at anvende kugleformede prop-elementer, som isættes kugleformede fordybninger i åbningen, men der er risiko for at prop-elementerne spules ud af fordybningerne, og derfor mangler denne kendte teknik de nødvendige godkendelser. Det er opfindelsens formål at tilvejebringe en sikring, som både kan godkendes i henhold til 3A og EHEDG standarder og som er let at anvende og uden at det øger omkostningerne væsentligt.The invention relates to a protection against contamination of an opening in an outer surface of an elongated machine part. The surface of the machine part must form a closed curve about a longitudinal axis thereof, so that an unbroken band can be caused to enclose the machine part in a plane perpendicular to the longitudinal axis. Food, pharmaceutical and feed production plants have special requirements for ensuring a high standard of hygiene. It has been proposed in WO2014075678 (A1) to use spherical plug elements which are inserted spherical recesses in the opening, but there is a risk that the plug elements are flushed out of the recesses and therefore this prior art lacks the necessary approvals. It is the object of the invention to provide a fuse that can be approved both in accordance with 3A and EHEDG standards and which is easy to use and without significantly increasing costs.
Dette er opnået ved, at et fleksibelt rundgående ubrudt bånd er tilvejebragt hen over åbning og mod den udvendige overflade hvorved båndet enten i sig selv dækker åbningen eller holder en prop fast i åbningen eller er fremstillet ud i et stykke med en prop, som passer formsluttende ned i åbningen. Den langstrakte maskindel kan fx være cylinderformet med enten cirkulært eller ikke cirkulært tværsnit på tværs af længdeaksen, den kan fx godt fremstå som et firkant eller et oval-rør. Det rundtgående ubrudte bånd skal sidde rundt om den langstrakte maskindel og tilvejebringe en pak-kraft hele vejen rundt om åbningen, og ikke mindst i materiale-overgangen mellem bånd-materialet og maskindelens materiale skal der være trykspænding, således at fremmedlegemer ikke kan trænge ind her, og fastholdes mellem båndet og maskindelen.This is achieved by providing a flexible circular unbroken band over opening and towards the outer surface whereby the band itself covers the opening or holds a plug in the opening or is made out of a piece with a plug that fits form-fitting down the opening. For example, the elongated machine part may be cylindrical with either circular or non-circular cross-section across the longitudinal axis, for example it may well appear as a square or an oval tube. The circumferential unbroken belt must sit around the elongated machine part and provide a packing force all the way around the opening, and not least in the material transition between the belt material and the material of the machine part there must be compressive stress, so that foreign bodies cannot penetrate here. , and is held between the belt and the machine part.
Til yderligere sikring af det rundgående bånd er dette i henhold til krav 2 anbragt i et spor, som strækker sig rundt langs maskindelens overflade. Her foretrækkes det, at sporet følger en frembringer for maskindelen, som forløber på tværs af længdeaksen, idet det herved bedre kan sikres, at der altid er tryk-spændinger mellem sporets sidevægge og det rundgående bånds anlægsflader mod sidevæggene.To further secure the circular belt, this is according to claim 2 arranged in a groove extending around the surface of the machine part. Here, it is preferred that the groove follows a generator for the machine part which extends across the longitudinal axis, thereby better ensuring that there are always compressive stresses between the side walls of the groove and the abutment surfaces of the circular band against the side walls.
Specielt foretrækkes det, som anført i krav 3, at det rundtgående bånd har en aksial udstrækning, en radial tykkelse samt en diameter, som er dimensionerede således i forhold til maskindelen og åbningen, at der i en materialeovergang mellem bånd-materialet og den udvendige overflade af maskindelens materiale altid er trykspændinger. Denne udformning sikrer både at det rundtgående bånd sidder godt beskyttet i sporet, så det ikke let slås ud af position, og samtidig at der vil kunne etableres en næsten jævn og ubrudt overgang mellem bånd og maskindel så der ikke opstår sprækker eller indhak, hvor smuds kan ophobes.Particularly, as stated in claim 3, it is preferred that the circumferential strip has an axial extension, a radial thickness and a diameter which is dimensioned so as to be relative to the machine part and the opening that in a material transition between the strip material and the outer surface. of the material of the machine part is always compressive stress. This design ensures that the circumferential belt is well protected in the groove so that it is not easily knocked out of position, and at the same time that an almost smooth and uninterrupted transition between the belt and the machine part can be established so that no cracks or notches occur where dirt can accumulate.
Som anført i krav 4, foretrækkes det, at sporet i det mindste er lige så bredt i aksialretningen, som diameteren af den åbning sporet passerer hen over. Samtidig skal sporet have en ensartet dybde. Hermed sikres, at det rundtgående bånd har en anlægsflade i bunden af sporet hele vejen rundt langs åbningens øvre rand. Yderligere gør den ensartede dybde af sporet, at båndet også kan laves med ensartet godstykkelse i radialretningen, så det kan sættes på i en vilkårlig rotation i forhold til maskindelens udvendige overflade og i forhold til hullerne, og alligevel altid dække alle huller effektivt af.As stated in claim 4, it is preferred that the groove is at least as wide in the axial direction as the diameter of the opening groove passes. At the same time, the track must have a uniform depth. This ensures that the circumferential belt has a contact surface at the bottom of the groove all the way around the upper edge of the opening. Furthermore, the uniform depth of the groove allows the strip to be made with uniform thickness in the radial direction so that it can be applied in any rotation with respect to the outer surface of the machine part and the holes, and yet always cover all holes effectively.
Som anført i krav 5 foretrækkes det yderligere, at sporet dannes hen over åbningen med centrum for åbningen centreret i forhold til sporets udstrækning i aksialretningen. Så sikres det, at båndet har en anlægsflade hele vejen rundt om åbningen i bunden af sporet, og skævheder, hvor dele af båndet fx glider ned i åbningen undgås.As stated in claim 5, it is further preferred that the groove is formed over the opening with the center of the opening centered relative to the extension of the groove in the axial direction. This ensures that the belt has an abutment surface all the way around the opening at the bottom of the groove, and distortions where parts of the belt slip down into the opening, for example, are avoided.
Desuden angår opfindelsen et afstandsstykke, der har to ender og omfatter en befæstelsesdel mod en maskine eller andet udstyr i den ene ende og en fod indrettet til kontakttryk mod en fast part i den anden ende, hvor afstanden mellem befæstelsesdelen og foden indstilles med en kraftoverførende mekanisme omfattende en udvendig cylinderformet del. Afstandsstykker af denne art er velkendte og benævnes oftest ’’maskinfødder”, idet foden typisk er indrettet til at lægge an mod en plan flade så som et gulv. Det er velkendt at forsøge at lave den afstandsregulerende mekanisme, således at den opfylder høje krav til hygiejne, fx ved at sikre at der ikke udefra er adgang til gevind eller andre sprækker, hvori bakteriefyldt materiale kan ophobes. Til sikring af åbninger så som gennemgående gevindhuller i en udvendig cylindrisk kappedel af en sådan maskinfod foreslås det ifølge opfindelsen, at anvende et rundtgående bånd som anført ovenfor. En sådan sikring udvider anvendelsesmulighederne for netop denne type maskinfødder eller afstandsstykker, som nu vil kunne godkendes til anvendelse i lægemiddelindustrien, fødevareproduktion og produktion af dyrefodder.In addition, the invention relates to a spacer having two ends and comprising a fastening part against a machine or other equipment at one end and a foot adapted for contact pressure against a fixed part at the other end, where the distance between the fastening part and the foot is adjusted by a power transmitting mechanism. comprising an outer cylindrical portion. Spacers of this kind are well known and are most often referred to as '' machine feet '', the foot typically being adapted to abut a flat surface such as a floor. It is well known to try to make the spacer mechanism so that it meets high hygiene requirements, for example, by ensuring that no external threads or other cracks in which bacteria-filled material can accumulate can be accessed. In order to secure openings such as through thread holes in an outer cylindrical sheath portion of such a machine foot, it is proposed according to the invention to use a circumferential band as indicated above. Such a fuse extends the scope for just this type of machine feet or spacers, which can now be approved for use in the pharmaceutical industry, food production and animal feed production.
Som anført i krav 7 har afstandsstykket et gevindhuld i den cylinderformede ydre maskindel, og i gevindhullet er der monteret en pinolskrue, således at den cylinderformede maskindel kan sikres mod u-ønskede bevægelser både rotationsmæssigt og i aksialretningen.As stated in claim 7, the spacer has a threaded hole in the cylindrical outer machine part and a threaded screw is mounted in the threaded hole so that the cylindrical machine part can be secured against undesired movements in both rotational and axial directions.
Som anført i krav 8 foretrækkes det, at det rundgående bånd er af en relativ eftergivelig gummi-elastisk type, som har en prædefineret hårdhed på omkring 60 pts og en relativ lav trækstyrke på ikke mindre end 4 Mpa. Med disse parametre kan man sikre et rundtående bånd, som er meget fleksibelt og let lader sig montere eller afmontere fra det cylinderformede maskinelement og også ved forekomsten af et spor rundt langs overfladen heraf, bliver det let at få båndet til at glide ned i sporet når det skal monteres. I en alternativ udformning af afstandsstykket er båndet lavet af et materiale, som ikke tåler afmontering efter den første montage. Herved bliver det muligt altid at sikre at der kommer et nyt bånd på ved ændringer, og ved forsøg på ændringer af afstandsstykket efter montage, vil der være en synlig markør af at et indgreb har været foretaget, i det mindste indtil et nyt bånd kommer på plads på afstandsstykket.As stated in claim 8, it is preferred that the circular band be of a relatively resilient rubber elastic type having a predefined hardness of about 60 pts and a relatively low tensile strength of not less than 4 MPa. With these parameters one can ensure a circular belt which is very flexible and easily removable or detachable from the cylindrical machine element and also in the presence of a groove around the surface thereof, it becomes easy to slip the belt into the groove when it must be fitted. In an alternative design of the spacer, the belt is made of a material that cannot withstand removal after the first installation. In this way, it is always possible to ensure that a new tape comes on when changes are made, and when attempting to change the spacer after mounting, there will be a visible marker that an intervention has been made, at least until a new tape comes on. space on the spacer.
Opfindelsen angår tillige en fremgangsmåde, til sikring mod forurening af en åbning i en udvendig overflade af en cylinderformet maskindel. Fremgangsmåden er særegen ved at, et fleksibelt ubrudt bånd monteres omkring maskindelen og enten holder en prop fast i åbningen, er sammenhængende med en prop som sidder i åbningen eller dækker åbningen helt, hvorved der etableres kraftsluttende anlæg mellem maskindelens overflade og båndet. Det kraftsluttende anlæg mellem maskindelen og det rundtående bånd sikrer mod at der optræder hulrum eller sprækker mellem båndets anlægsflader og overfladen af maskindelen. Anvendes fx et fleksibelt båndmateriale så som Silicon Rubber 60 Shore A, Compound S6002F er det simpelt at dimensionere det rundtgående bånd, således at det ved anlæg mod den cylinderformede ydre overflade af maskindelen altid er strakt ud med en procentvis forlængelse, der ikke overstiger den ultimative forlængelse, som for dette materiale anføres til >150% i henhold til testmetode D412 og til gengæld er i det mindste forlænget 3%, fortrinsvist mindst 4 til 6% ud over spændingsfri neutraltilstand.The invention also relates to a method for protecting against contamination of an opening in an outer surface of a cylindrical machine part. The method is peculiar in that a flexible unbroken belt is mounted around the machine part and either holds a plug in the opening, is coherent with a plug which sits in the opening or covers the opening completely, thereby establishing power-sealing systems between the surface of the machine part and the belt. The force-closing system between the machine part and the circumferential belt ensures that there are voids or cracks between the abutment surfaces of the belt and the surface of the machine part. For example, if a flexible tape material is used such as Silicon Rubber 60 Shore A, Compound S6002F, it is simple to dimension the circumferential tape so that when abutting against the cylindrical outer surface of the machine part it is always extended with a percentage extension that does not exceed the ultimate elongation, which for this material is stated to be> 150% according to test method D412 and, in turn, is at least extended 3%, preferably at least 4 to 6% in addition to voltage-free neutral state.
Opfindelsen skal herefter nærmere forklares under henvisning til tegningerne, på hvilke:The invention will now be explained in more detail with reference to the drawings, in which:
Fig. 1 viser et forstørret snit gennem et bånd anbragt i et spor hen over en åbning ifølge opfindelsen,FIG. 1 shows an enlarged section through a band placed in a groove across an opening according to the invention,
Fig. 2 viser et frontbillede af hele den maskinsko, hvorfra udsnittet i Fig. 1 er taget,FIG. 2 is a front view of the entire machine shoe from which the section of FIG. 1 is taken,
Fig. 3 viser et snit svarende til Fig. 1, men fra en maskinsko i en lidt anden konstruktion,FIG. 3 is a sectional view similar to FIG. 1, but from a machine shoe in a slightly different construction,
Fig. 4 er frontbilledet af hele den maskinsko, hvorfra udsnittet i Fig. 3 er taget,FIG. 4 is the front view of the entire machine shoe from which the section of FIG. 3 is taken,
Fig. 5 er et eksempel på kendt teknik inden for området,FIG. 5 is an example of prior art in the art,
Fig. 6A - Fig. 6D er billeder, der illustrere hvordan båndet monteres i sporet, ogFIG. 6A - FIG. 6D are pictures illustrating how the tape is mounted in the groove, and
Fig. 7A og Fig. 7B er billeder, der illustrere hvordan båndet afmonteres.FIG. 7A and FIG. 7B are pictures illustrating how the tape is removed.
Det bemærkes, at i forskellige udførelsesformer for opfindelsen har forskelligt udseende emner samme henvisningstal i det omfang de udfører i det væsentlige samme funktion i forbindelse med opfindelsen. I Fig. 5 ses et eksempel på en sikring mod forurening af en åbning 12 i henhold til kendt teknik. Her henviser 2 til en cylindrisk maskindel. I maskindelens udvendige overflade er der åbninger 12 i form af skruehuller. Til sikring mod forurening af hullerne med fx bakterieholdige substanser er der heri indsat kugleformede propper 6. Propperne er indrettede så de lige netop lader sig presse ind i kugleformede hulrum, som er etablerede yderst mod den cylindriske maskindels 2 overflade og med en åbning mod overfladen, som er noget mindre end det kugleformede hulrums største diameter. De kugleformede propper 6 lader sig fjerne med håndkraft. Imidlertid har det vist sig, at disse propper anses for at være i risiko for at blive enten slået ud eller spulet ud af deres kugleformede hulrum under sædvanlig brug, fx i fødevareproduktion, medicinalproduktion eller ved andre former for produktion hvor bakteriel forurening skal holdes under kontrol. En sådan prop, som utilsigtet er blevet fjernet fra sit hulrum indebære flere sikkerhedsmæssige udfordringer: dels efterlades hulrummet og åbningen 12 ubeskyttet over for bakteriefyldte substanser, som kan sætte sig fast her, og dels er selve den kugleformede prop 6 et sikkerhedsmæssigt problem, fordi den vil kunne optræde som fremmedlegeme i fødevare, foder eller medicin. På fig. 1 er vist en sikring mod forurening af en åbning 12 i henhold til opfindelsen. I den udvendig overflade 1 på en cylindrisk maskindel 2 er vist et fleksibelt rundgående ubrudt bånd 3, som er tilvejebragt hen over en åbning 12. I det viste eksempel på opfindelsen er maskindelen en cirkelrund cylinder, men ikke cirkulære cylindre eller maskindele som blot er langstrakte og har en længdeakse er også mål for opfindelsen, idet det blot kræves, at maskindelen har en ydre overflade, som kan omsluttes af et ubrudt bånd. Hvis et sådan bånd er monterbar på en langstrakt maskindels ydre overflade, vil båndet kunne tildække og dermed beskytte åbninger i maskindelens overflade. Åbningen 12 vender ud mod den udvendige dels overflade 1 og i det viste eksempel dækker båndet 3 i sig selv åbningen 12. Men båndet kan også sidde hen over en prop, af den type, som er vist i Fig. 5 og her holde proppen 6 fast i åbningen. I en yderligere udførelsesform (ikke vist), er båndet 3 fremstillet ud i et stykke med en prop, som passer formsluttende ned i åbningen 12, således at båndet 3 igen kan sikrer proppens forbliven i åbningen 12. Ved de tre nævnte måder at indrette opfindelsen på, vil der altid komme et meget synligt tegn på fejl såfremt det ubrudte bånd 3 er fjernet, især hvis båndet er udformet med en tydelig farve-kontrast i forhold til maskindelens udvendige overflade. Sædvanligvis er den cylindriske maskindel 2 fremstillet i rustfrit stål af en passende kvalitet i forhold til hvor kemisk aggressivt miljøet er, og det er relativt let at lade det ubrudte bånd 3 fremstille i en klar kontrastfarve hertil, så som blå, gul eller rød. Herved kan det med et enkelt blik konstateres, om alle huller i en cylindrisk maskindel er ordentligt beskyttede, også dem, som måtte ligge på bagsiden af maskindelen i forhold til en beskuer, idet tilstedeværelse af det ubrudte bånd vil være indikation af at hullerne er beskyttede, og manglende tilstedeværelse af båndet vil indikere manglende beskyttelse.It should be noted that in different embodiments of the invention, different appearance items have the same reference numerals to the extent that they perform substantially the same function in connection with the invention. In FIG. 5 shows an example of a fuse against contamination of an opening 12 according to the prior art. Here, 2 refers to a cylindrical machine part. In the outer surface of the machine part there are openings 12 in the form of screw holes. Spherical plugs 6 are inserted herein to prevent contamination of the holes with, for example, bacteria-containing substances. which is somewhat smaller than the largest diameter of the spherical cavity. The spherical plugs 6 can be removed by hand. However, it has been found that these plugs are considered to be at risk of being knocked out or flushed out of their spherical cavities during normal use, for example in food production, pharmaceutical production or other forms of production where bacterial contamination is to be controlled. . Such a plug, which has been unintentionally removed from its cavity, poses several security challenges: firstly, the cavity and opening 12 are left unprotected against bacteria-filled substances which may become stuck here, and partly the spherical plug 6 is a safety issue because may act as a foreign body in food, feed or medicine. In FIG. 1 shows a protection against contamination of an opening 12 according to the invention. In the outer surface 1 of a cylindrical machine part 2 is shown a flexible circular unbroken band 3 provided over an opening 12. In the illustrated example of the invention, the machine part is a circular cylinder, but not circular cylinders or machine parts which are merely elongated and having a longitudinal axis is also an object of the invention, merely requiring the machine part to have an outer surface which can be enclosed by an unbroken band. If such a belt is mountable on the outer surface of an elongated machine part, the belt will be able to cover and thus protect openings in the surface of the machine part. The opening 12 faces the surface 1 of the outer part and in the example shown, the belt 3 itself covers the opening 12. But the belt can also sit over a plug of the type shown in FIG. 5 and here the plug 6 holds in the opening. In a further embodiment (not shown), the belt 3 is made integrally with a plug which fits form-fitting down into the opening 12, so that the belt 3 can again secure the plug's stay in the opening 12. In the three mentioned ways of arranging the invention on, there will always be a very visible sign of failure if the unbroken belt 3 is removed, especially if the belt is designed with a clear color contrast to the outside surface of the machine part. Usually, the cylindrical machine part 2 is made of stainless steel of a suitable quality in relation to how chemically aggressive the environment is, and it is relatively easy to allow the unbroken band 3 to produce in a clear contrast color to it, such as blue, yellow or red. Hereby, it can be seen with a single glance whether all holes in a cylindrical machine part are properly protected, including those which may lie on the back of the machine part in relation to a viewer, the presence of the unbroken belt indicating that the holes are protected. , and the absence of the tape will indicate a lack of protection.
Som det ses i fig. 1 og 2 har maskindelen 2 et rundtgående spor 4 i sin udvendige cylinderformede overflade 1, og sporet er anbragt netop så det krydser hen over åbningen 12. Her sidder båndet 3 nede i sporet 4, og som det ses i Fig. 1, vil der være en næsten ubrudt overgang mellem båndets udvendige overfalde 5 og maskindelens udvendige overflade 1. Herved sikres båndet mod at blive forskubbet langs den udvendige overflade 1 og risikoen for at båndet skal lide skade ved tilfældige anslag mod bevægelige genstande holdes også lav.As seen in FIG. 1 and 2, the machine part 2 has a circumferential groove 4 in its outer cylindrical surface 1, and the groove is positioned precisely so that it crosses over the opening 12. Here the belt 3 sits down in the groove 4, and as seen in FIG. 1, there will be an almost uninterrupted transition between the outer surface of the belt 5 and the outer surface of the machine part 1, thereby securing the belt from being displaced along the outer surface 1 and the risk of the belt being damaged by accidental impact on moving objects is also kept low.
Den udvendige overflade 1 kan tilhøre enhver maskindel, som har åbninger der skal beskyttes, og i det viste eksempel i figurerne 1 og 2 er cylinderformen cirkulær, men ikke-cirkulære cylindriske maskindele samt koniske elementer kunne også komme på tale, fx firkant- eller oval-rør med radiale åbninger eller konus-overflade med radiale åbninger vil kunne beskyttes på den her anviste måde, så der ikke kommer fremmelegemer ind i åbningerne. I eksemplet i Fig. 1 er den cirkulære cylinderformede maskindel 2 en udvendig del af en såkaldt maskinfod eller afstandsstykke 10, hvorved den ene ende 9 af afstandsstykket 10 sidder monteret i en maskine (ikke vist) og den modsatte ende 8 omfatter en fod 7 eller holder, som danner understøtning mod væg, loft, gulv eller et ophængsbeslag for maskinen, når maskinfoden er i brug. Det betyder, at det ubrudte bånd ikke kan fjernes fra afstandsstykket 10, når den først er i brug, men det vil kunne forskubbes langs den udvendige cylindriske overflade når åbningen 12 skal være tilgængelig. Det kunne fx være ved justering af skruen 11, som er placeret i et indvendigt gevind 13 i åbningen 12.The outer surface 1 may belong to any machine part having apertures to be protected, and in the example shown in Figures 1 and 2 the cylindrical shape is circular, but non-circular cylindrical machine parts as well as tapered elements could also be present, e.g. square or oval -pipes with radial openings or tapered surface with radial openings can be protected in the manner described here so that no foreign bodies enter the openings. In the example of FIG. 1, the circular cylindrical machine part 2 is an outer part of a so-called machine foot or spacer 10, whereby one end 9 of the spacer 10 sits mounted in a machine (not shown) and the opposite end 8 comprises a foot 7 or support forming against the wall, ceiling, floor or a mounting bracket for the machine when the machine foot is in use. This means that the unbroken belt cannot be removed from the spacer 10 when first in use, but it can be displaced along the outer cylindrical surface when the opening 12 is to be accessible. It could be, for example, by adjusting the screw 11 which is located in an internal thread 13 in the opening 12.
Det bemærkes at det rundtgående ubrudte bånd 3, har en aksial udstrækning benævnt L, en radial tykkelse benævnt T samt en indvendig diameter benævnt D, og disse skal være dimensionerede således i forhold til hinanden, at der i en materialeovergang 14 mellem bånd-materialet og den udvendige maskindels materiale altid er trykspændinger. Trykspændingerne er vigtige, fordi de sikrer mod at fremmedlegemer trænger ind mellem de to materialer. Hvis båndet blot sidder udvendigt på maskindelen 2 uden at der heri er tilvejebragt et spor, er det vigtigste mål for båndet dets indvendige diameter, og her vil kravet være at båndets indvendige omkreds i det mindste ikke overstiger den udvendige omkreds af maskindelen 2. Hvis båndet er cirkulært cylindrisk i upåvirket tilstand, vil der være en simpel geometrisk sammenhæng mellem båndets indre diameter og omkredsen langs dets indad vendende overflade. Båndet 3 vil typisk være fremstillet af et fleksibelt gummielastisk materiale, og vil i praksis altid kunne støbes som et cirkulært cylindrisk legeme, også selv om maskindelen 2 har en ikke-cirkulær frembringer vinkelret på sin længdeakse, eller fx har en konisk udvendig overflade.It should be noted that the circumferential unbroken belt 3 has an axial extension denoted L, a radial thickness denoted T and an inner diameter denoted D, and these must be dimensioned relative to each other so that in a material transition 14 between the strip material and the material of the outer machine part is always compressive stresses. The compressive stresses are important because they ensure that foreign bodies penetrate between the two materials. If the belt simply sits externally on the machine part 2 without providing a groove therein, the most important measure of the belt is its inner diameter, and here the requirement will be that the inner circumference of the belt does not at least exceed the outer circumference of the machine part 2. If the belt is circularly cylindrical in the unaffected state, there will be a simple geometric relationship between the inner diameter of the belt and the circumference along its inwardly facing surface. The belt 3 will typically be made of a flexible rubber elastic material and will in practice always be cast as a circular cylindrical body, even if the machine part 2 has a non-circular perpendicular to its longitudinal axis or, for example, has a conical exterior surface.
Skal båndet 3 sidde i et spor som vist i fig. 1, kan L, T og D målene antages at være de nominelle mål for båndet 3, når det ikke sidder omkring en cylinderformet maskindel 2, og her vil et nominelt volumen Vbånd for båndet kunne beregnes. På samme vis vil der fra eksemplet i Fig. 2 kunne beregnes et nominelt volumen Vsp0r for sporet 4, og her vil kravet være, at Vbånd or en passende procentdel større end Vsp0r. Procentdelen vil typisk ligge i området fra 1% til 15% fortrinsvist 5%. Samtidig må det sikres, at L, T og D for henholdsvis bånd 3 og spor 4 ikke afviger væsentligt fra hinanden, således at båndets overstørrelse i forhold til sporet er ligeligt fordelt på L og T og altid sådan at længden af den indre omkreds af båndet altid er mindre end længden af den indre omkreds i sporet.Should the belt 3 sit in a groove as shown in FIG. 1, the L, T and D dimensions can be assumed to be the nominal dimensions of the belt 3 when it is not around a cylindrical machine part 2, and here a nominal volume V band of the belt can be calculated. Similarly, from the example of FIG. 2, a nominal volume Vsp0r could be calculated for the track 4, and here the requirement would be that Vband or an appropriate percentage greater than Vsp0r. The percentage will typically be in the range of 1% to 15%, preferably 5%. At the same time, it must be ensured that L, T and D for band 3 and track 4, respectively, do not differ significantly from one another, so that the over-size of the belt relative to the track is evenly distributed on L and T and always such that the length of the inner circumference of the band always less than the length of the inner circumference of the groove.
Det foretrækkes at sporet har en udstrækning i aksial retning langs den udvendige materialeoverflade 1 og har samme dybde i hele sin udstrækning idet sporets 4 udstrækning i aksialretningen ikke er mindre end åbningens 12 diameter. Her er så antaget at åbningen er cirkulær, hvilket vil være det mest almindeligt forekommende. Ved denne relation mellem det rundtgående spor 4 og åbningen 12 sikres det, at der hele vejen rundt langs randen af åbningen 12 er en anlægsflade 15 parallelt med det cylindriske maskindels overflade 1. Denne konstruktion er med til at sikre at båndet 3 altid ligger fladt til mod randen af åbningen og forsegler denne. Som det yderligere ses i fig. 1 er sporet 4 centreret i forhold til åbningens udstrækning langs maskindelens centerakse. Herved sikres det, at det stykke sporet overstiger åbningens 12 udstrækning i aksialretningen fordeles ligeligt ved hver side af åbningen 12, og der vil da komme et ligeligt fordelt tryk mellem båndet og randen af åbningen, som definerer anlægsfladen 15. Både det i Fig. 2 og det i Fig. 4 viste eksempel på opfindelsen omfatter et afstandsstykke 10, der har to ender 8,9 hvor den ene ende 9 omfatter et fæste mod en maskine (ikke vist) eller andet udstyr. Et sådan fæste kan fx udgøres af en gevindstub, som kan skrues ind i et gevindhul i maskinen, eller det kan omfatte en prespasning, eller en svejsetab, så afstandsstykket kan svejses fast til maskinen. Andre velkendte former for fæster mellem afstandsstykket og maskinen kan anvendes. I den anden ende 8 er der hensigtsmæssig tilvejebragt en fod 7 indrettet til kontakttryk mod en fast part. Her kan foden 7 være indrettet på mange forskellige måder, både som griber til montage omkring rør, eller som svejsestub, der svejses fast til en bjælke eller anden understøttende del. Centralt for afstandsstykkets funktion er, at afstanden mellem befæstelsesdelen 9 og foden 7 er indstillelig via en kraftoverførende mekanisme og omfatter en udvendig cylinderformet del 2 med en overflade 1. Et sådan afstandsstykke 10 er i Fig. 2 og Fig. 4 vist med en traditionel fod 7 i den ene ende, hvor foden 7 omfatter et gummielement 17 med en anlægsflade 18 indrettet til at lægge an mod fx et gulv i et værksted eller produktionslokale. Gummielementet 17 er så fx vulkaniseret ind i en metalkåbe 19. Mellem gummielementet 17 og et kraftoverførende ben 20 kan der evt. være tilvejebragt et fleksibelt led, så som et kugleled 21, hvilket tillader det kraftoverførende ben 20 at vinkelstilles i forhold til foden 7. Sædvanligvis er en central del af metalkåben 19 og undersiden af det kraftoverførende ben 20 udformet som de to i forhold til hinanden frit roterbare dele af et kugleled 21.It is preferred that the groove has an axial extension along the outer material surface 1 and has the same depth throughout its extent, with the groove 4 extending in the axial direction not less than the diameter of the opening 12. It is then assumed that the opening is circular, which will be the most common. By this relation between the circumferential groove 4 and the opening 12, it is ensured that, all along the edge of the opening 12, there is a abutment surface 15 parallel to the surface of the cylindrical machine part 1. This construction helps to ensure that the belt 3 is always flat to towards the rim of the opening and seal this one. As further seen in FIG. 1, the groove 4 is centered relative to the extent of the opening along the center axis of the machine part. This ensures that the piece of groove exceeds the extent of the opening 12 in the axial direction is distributed equally on each side of the opening 12, and then there will be an evenly distributed pressure between the belt and the rim of the opening defining the abutment surface 15. Both of the abutments in FIG. 2 and that of FIG. 4 of the invention comprises a spacer 10 having two ends 8,9, one end 9 of which comprises a bracket against a machine (not shown) or other equipment. Such a bracket may, for example, consist of a threaded rod which can be screwed into a threaded hole in the machine, or it may comprise a press fit, or a welding loss, so that the spacer can be welded to the machine. Other well-known forms of fasteners between the spacer and the machine can be used. At the other end 8 there is conveniently provided a foot 7 arranged for contact pressure against a fixed part. Here, the foot 7 can be arranged in many different ways, both as grippers for mounting around pipes or as welding stubs which are welded to a beam or other supporting part. Central to the function of the spacer is that the distance between the fastening member 9 and the foot 7 is adjustable via a force transmitting mechanism and comprises an outer cylindrical portion 2 with a surface 1. Such spacer 10 is shown in FIG. 2 and FIG. 4 shown with a traditional foot 7 at one end, the foot 7 comprising a rubber element 17 with a contact surface 18 arranged to abut, for example, a floor in a workshop or production room. The rubber element 17 is, for example, vulcanized into a metal casing 19. Between the rubber element 17 and a power-transmitting leg 20, it is possible to provide a be provided with a flexible joint, such as a ball joint 21, which allows the power transmitting leg 20 to be angled with respect to the foot 7. Usually, a central portion of the metal cap 19 and the underside of the power transmitting leg 20 are formed as the two relative to each other freely. rotatable parts of a ball joint 21.
Mellem det kraftoverførende ben 20 og fæstet mod en maskine 9 er der indrettet en mekanisme til justering af længden af afstandsstykket 10, som ikke er vist i detaljer i figuren. Det kan være et cylinder-stempelpar eller det kan være en spindelmekanisme med et udvendigt gevind hørende fx til det kraftoverførende ben 20, og et indvendigt hertil modsvarende gevind i et cylindrisk rør. Ved at rotere røret i forhold til benet vil de to elementer foretage en teleskop-bevægelse i forhold til hinanden, og idet det cylindriske rør er forbundet til enden 8 med fæste mod maskinen, kan afstanden mellem fod 7 og maskine justeres.A mechanism for adjusting the length of the spacer 10, which is not shown in detail in the figure, is arranged between the power transmitting leg 20 and fixed to a machine 9. It may be a cylinder piston pair or it may be a spindle mechanism with an external thread belonging to, for example, the power transmitting leg 20, and an internally corresponding thread in a cylindrical tube. By rotating the tube relative to the leg, the two elements will make a telescopic motion relative to each other, and as the cylindrical tube is connected to the end 8 with attachment to the machine, the distance between the foot 7 and the machine can be adjusted.
Til sikring mod utilsigtet rotation eller forskydning af den cylindriske maskindel 2 i forhold til det kraftoverførende ben 20 er der i den cylindriske maskindel 2 isat skruer 11 i hertil indrettede åbninger 12 med gevind 13 som tidligere forklaret.In order to prevent accidental rotation or displacement of the cylindrical machine part 2 with respect to the power transmitting leg 20, screws 11 are inserted in the cylindrical machine part 2 in openings 12 with threads 13 as previously explained.
Den cylindriske maskindel kan have andre funktioner end de her viste og beskrevne, fx kan det være en kontra-møtrik, som så på tilsvarende vis skal blokkeres med en pinolskrue 11.The cylindrical machine part may have functions other than those shown and described herein, for example it may be a counter-nut, which should then be similarly blocked with a pin screw 11.
Det foretrækkes ifølge opfindelsen at det rundgående bånd er fremstillet i silikone og har en prædefineret hårdhed i Shore A på mellem 55 og 70 pts, fortrinsvist en hårdhed på 60 pts samt trækstyrke på ikke mindre end 4 Mpa. Hermed fås sikkerhed for dels at båndet kan monteres relativt let omkring en maskinfods udvendige cylindriske maskindel 2, og dels at båndet 3 kan lægge an med den fornødne kraft mod dette elements metaloverflade og forsegle herimod. I en alternativ udførelsesform er det rundgående bånd fremstillet i en plasttype, der har en sådan hårdhed og elastisk udvidelse, at afmontering fra maskindelen vil medføre destruktion af båndet. Hermed vil båndet kunne fungere som anbruds-indikator, der viser om der på et tidligere tidspunkt har været åbnet for adgang til de forseglede åbninger 12. I Fig. 3 og Fig. 4 er der vist en lidt anden udformning af en maskinfod 10, hvor det ubrudte bånd 3 sidder på en konusformet forlængelse 22 af cylindriske maskindel 2I. Denne forlængelse 22 er placeret nærmest foden 7, men kunne være anbragt i den modsatte ende af maskindelen 2. Som det ses i fig. 3, er sporet dannet som en neddrejning med aksielle endevægge 23, som er vinkelrette på konusfladens retlinede frembringere 25, og med en bund 24, som er parallelle med konusfladens retlinede frembringere 25. Et ubrudt bånd passende til dette spor, må have parallelt forløbende konusformet indre og ydre overflade, og en ens-tyk godstykkelse herimellem. I det viste eksempel er åbningen 12 ikke centreret i forhold til hverken sporets øvre rand eller sporet bund. Men det er naturligvis muligt at centrere åbningen 12 efter det rundgående spors bund 24, således at den øverste rand af åbningen 12 har samme afstand til det rundgående spors 4 aksielle endevægge 23, så den parallelle anlægsflade 15 her altid har et mindstemål hele vejen rundt langs åbningen 12. Som det er antydet i figuren, er båndets ydre konusformede overflade svagt hvælvet, når båndet sidder i sporet, og går dermed lidt ud over maskindelens retlinede frembringere 25. Dette kommer af at båndets volumen er lidt større end sporets volumen, for som beskrevet at sikre trykspændinger mellem båndets og sporets respektive anlægsflader mod hinanden.It is preferred according to the invention that the circular band is made of silicone and has a predefined hardness in Shore A of between 55 and 70 pts, preferably a hardness of 60 pts and a tensile strength of not less than 4 MPa. This provides assurance that the belt can be mounted relatively easily around the outer cylindrical machine part 2 of a machine foot, and partly that the belt 3 can apply with the necessary force to the metal surface of the element and seal against it. In an alternative embodiment, the circular belt is made of a plastic type having such hardness and elastic expansion that removal from the machine part will cause the belt to be destroyed. In this way, the belt will be able to act as a break indicator, indicating whether access to the sealed openings has been opened at an earlier time. 3 and FIG. 4, a slightly different configuration of a machine foot 10 is shown, where the unbroken belt 3 sits on a cone-shaped extension 22 of cylindrical machine part 2I. This extension 22 is located closest to the foot 7, but could be located at the opposite end of the machine part 2. As seen in FIG. 3, the groove is formed as a downward rotation with axial end walls 23 perpendicular to the cone face's rectilinear generators 25, and with a base 24 parallel to the cone face's rectilinear generators 25. inner and outer surface, and a uniform thickness between them. In the example shown, the opening 12 is not centered relative to neither the upper edge of the groove nor the groove bottom. But, of course, it is possible to center the opening 12 after the bottom 24 of the circular groove, so that the upper edge of the opening 12 is the same distance from the axial end walls 23 of the circular groove 4, so that the parallel abutment surface 15 here always has a minimum dimension all the way around. the opening 12. As indicated in the figure, the outer cone-shaped surface of the belt is slightly arched as the belt sits in the groove, and thus slightly exceeds the rectilinear generators of the machine part 25. This is because the volume of the belt is slightly larger than the volume of the groove because described to ensure compressive stresses between the respective abutment surfaces of the belt and the track.
Sporene i de ovenfor anviste eksempler er med parallelle sider, som forløber vinkelrette på maskindelens overflade og har en plan bund, som ligeledes er parallel med maskindelens overflade i et skæringsplan gennem maskindelens længdeakse. Men andre typer af spor er mulige, fx med v-formede vægge og afrundet bund. Eller sporet kan udformes som en halvcirkel i et skæringsplan gennem maskindelens akse. I overgangen fra et spors side og maskindelens overflade kan der fx i hver af sporets sider være tilvejebragt en skarp indadrettet flange, som det gummi-elastiske båndmateriale presses ned under for at blive korrekt monteret. Afmontering af båndet bliver herved vanskelig, og vil muligvis kræve brug af værktøj, til gengæld kan en sådan konstruktion give forbedre hygiejnisk sikring. I figurerne 6A - 6D vises en serie af fotografier, der illustrerer forskellige stadier i påsætningen af et bånd: - 6A båndet 3 ligger ovenpå foden og er ikke monteret, - 6B båndet 3 er blevet påført glidemiddel, så som vand og eventuelt sæbe, og med fingerkraft er båndet lagt i sporet ved den væk fra operatøren vendende side af maskinfoden, og bliver nu skubbet og/eller trukket ud, så det kan falde ned i sporet, - 6C båndet skubbes det sidste stykke ned i sporet ved den mod operatøren vendende side af maskinfoden, - 6D båndet masseres langs sin ydre overflade til det sidder jævnt fordelt rundt langs den cylinderformede maskindels overflade, så der ikke er sprækker mellem båndet og sporet. I figurerne 7A og 7B er vist billeder af hvordan båndet 3 afmonteres: - 7A her fører operatøren med et pincetgreb og et vist tryk med fingrene om båndet 3 fingrene i samme retning, fx væk fra operatøren, hvorved båndets overflade på to modstående sider udsættes for en forskydningskraft i retning væk fra operatøren. Dette medfører at båndet i området nærmest operatøren strækkes og i området vendende væk fra operatøren vil der akkumuleres ekstra bånd-materiale, - 7B her ses hvordan operatøren fører fingerspidser eller negle ind under den akkumulerede ekstra bånd-materiale, som har medført at båndet i dette område sidder tilstrækkeligt løst, til at dette er muligt. Når først fingrene er inde under båndet, lader det sig relativt let strække, så det kan løftes ud af sporet hele vejen rundt. I det viste eksempel har båndet en udstrækning i den cylinderformede maskindels aksialretning på 9,0 mm, hvor sporet har en udstrækning i aksialretningen på 7,5 mm. Herved sikres det, at båndet når det sidder i sporet, altid fylder dette helt op, og lægger an med trykkraft mod siderne af sporet.The grooves in the above examples are with parallel sides extending perpendicular to the surface of the machine part and having a flat bottom which is also parallel to the surface of the machine part in a plane of intersection through the longitudinal axis of the machine part. But other types of tracks are possible, eg with v-shaped walls and rounded bottom. Or the groove can be formed as a semicircle in a plane of intersection through the axis of the machine part. For example, in the transition from the side of a groove to the surface of the machine part, a sharp inwardly directed flange may be provided, under which the rubber-elastic band material is pressed down to be properly mounted. Removing the belt will thereby be difficult, and may require the use of tools, however, such a construction may provide improved hygienic protection. Figures 6A - 6D show a series of photographs illustrating various stages in the application of a belt: - 6A belt 3 is on top of the foot and not mounted, - 6B belt 3 has been applied lubricant such as water and possibly soap, and with the finger force, the tape is placed in the groove at the away side of the operator foot of the machine foot, and is now pushed and / or pulled out so that it can fall into the groove, - the 6C belt is pushed down the last piece into the groove by the facing towards the operator side of the machine foot, - the 6D tape is massaged along its outer surface until it is evenly distributed around the surface of the cylindrical machine part so that there are no gaps between the tape and the groove. Figures 7A and 7B show pictures of how the tape 3 is removed: - 7A here, the operator with a forceps grip and a certain pressure with his fingers about the tape 3 fingers in the same direction, for example away from the operator, thereby exposing the surface of the tape to two opposite sides. a shear force in the direction away from the operator. This means that the tape in the area closest to the operator is stretched and in the area facing away from the operator will accumulate extra tape material, - 7B here you see how the operator places fingertips or nails under the accumulated extra tape material which has caused the tape in this area is sufficiently loose for this to be possible. Once the fingers are under the belt, it is relatively easy to stretch, so that it can be lifted out of the groove all the way around. In the example shown, the belt has an extension in the axial direction of the cylindrical machine part of 9.0 mm, the groove having an extension in the axial direction of 7.5 mm. This ensures that the tape when it is in the groove always fills it up completely and applies with compressive force to the sides of the groove.
Henvisningstal: 1 Udvendige overflade 2 Cylinderformet maskindel 3 Rundtående ubrudt bånd 4 Rundtgående spor 5 Båndets udvendige overflade 6 Kugleformede propper 7 Fod 8 Ende med anlæg mod fast part 9 Ende med fæste mod maskine 10 Maskinfod eller afstandsstykke 11 Skrue 12 Åbning 13 Indvendigt gevind 14 Materialeovergang 15 Parallel anlægsflade 16 17 Gummielement 18 Anlægsflade 19 Metal kåbe 20 Kraftoverførende ben 21 Kugleled 22 Konusformet forlængelse 23 Endevægge, 24 Bund af sporet, 25 Konusfladens retlinede frembringere,Reference number: 1 Exterior surface 2 Cylinder-shaped machine part 3 Continuous unbroken band 4 Circular groove 5 Exterior surface of the belt 6 Spherical plugs 7 Foot 8 End with abutment fixed 9 End with attachment to machine 10 Machine base or spacer 11 Screw 12 Opening 13 Internal thread 14 15 Parallel abutment surface 16 17 Rubber element 18 Abutment surface 19 Metal cover 20 Power transmitting legs 21 Ball joint 22 Tapered extension 23 End walls, 24 Bottom of groove, 25 Tapered rectangular generators,
Claims (10)
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| DKPA201570599A DK179015B1 (en) | 2015-09-21 | 2015-09-21 | Protection against contamination of an orifice, spacer and method of safeguard against contamination of an orifice |
| PCT/DK2016/050290 WO2017050337A1 (en) | 2015-09-21 | 2016-08-30 | Protection against contamination of an opening, distance piece and method for protection against contamination of an opening |
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| DKPA201570599A DK179015B1 (en) | 2015-09-21 | 2015-09-21 | Protection against contamination of an orifice, spacer and method of safeguard against contamination of an orifice |
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| DK201570599A1 DK201570599A1 (en) | 2017-04-03 |
| DK179015B1 true DK179015B1 (en) | 2017-08-21 |
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| DE1139337B (en) * | 1959-07-14 | 1962-11-08 | Bremshey & Co | Push-in socket connection for pipes, especially for vacuum cleaner pipes |
| CH668630A5 (en) * | 1985-10-30 | 1989-01-13 | Hans Oetiker | QUICK COUPLING ARRANGEMENT. |
| DE102007057382B4 (en) * | 2007-11-27 | 2012-03-15 | Rittal Gmbh & Co. Kg | leveling |
| GB201015970D0 (en) * | 2010-09-23 | 2010-11-03 | Doyle Timothy C | Pipe splint |
| CN203748868U (en) * | 2014-03-13 | 2014-08-06 | 育才控股集团有限公司 | Desk for children |
-
2015
- 2015-09-21 DK DKPA201570599A patent/DK179015B1/en not_active IP Right Cessation
-
2016
- 2016-08-30 WO PCT/DK2016/050290 patent/WO2017050337A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502092A (en) * | 1982-09-30 | 1985-02-26 | The Boeing Company | Integral lightning protection system for composite aircraft skins |
| US4601624A (en) * | 1984-04-27 | 1986-07-22 | Ark-Plas Products Inc. | Fastener head cover assembly |
| US4747241A (en) * | 1985-08-09 | 1988-05-31 | Whitman Robert E | Device for facilitating installation of rubber roof sheets |
| US4630168A (en) * | 1985-12-16 | 1986-12-16 | The Boeing Company | Lightning protection fastener |
| WO1999004175A1 (en) * | 1997-07-17 | 1999-01-28 | Paul Akers | Screw cover and method |
| EP2184227A1 (en) * | 2007-09-28 | 2010-05-12 | Mitsubishi Heavy Industries, Ltd. | Lighting-resisting fastener |
| US7464727B1 (en) * | 2007-10-22 | 2008-12-16 | Ips Corporation | Clean-out repair plug |
| US20120155989A1 (en) * | 2010-12-20 | 2012-06-21 | Gary Zack | Screw cover and seal |
| US20130186552A1 (en) * | 2012-01-17 | 2013-07-25 | Mitsubishi Aircraft Corporation | Lightning protection fastener and mounting method thereof |
| WO2014075678A1 (en) * | 2012-11-19 | 2014-05-22 | Ngi A/S | Method for closing holes and application |
Also Published As
| Publication number | Publication date |
|---|---|
| DK201570599A1 (en) | 2017-04-03 |
| WO2017050337A1 (en) | 2017-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |
Effective date: 20180921 |