NO121326B - - Google Patents

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Publication number
NO121326B
NO121326B NO4634/69A NO463469A NO121326B NO 121326 B NO121326 B NO 121326B NO 4634/69 A NO4634/69 A NO 4634/69A NO 463469 A NO463469 A NO 463469A NO 121326 B NO121326 B NO 121326B
Authority
NO
Norway
Prior art keywords
basket
water
crockery
washing
rinsing
Prior art date
Application number
NO4634/69A
Other languages
Norwegian (no)
Inventor
K Landaeus
K Olsson
Original Assignee
Akermans Verkstad Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akermans Verkstad Ab filed Critical Akermans Verkstad Ab
Publication of NO121326B publication Critical patent/NO121326B/no

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2203Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20576Systems with pumps with multiple pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/30525Directional control valves, e.g. 4/3-directional control valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/31Directional control characterised by the positions of the valve element
    • F15B2211/3105Neutral or centre positions
    • F15B2211/3111Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/31Directional control characterised by the positions of the valve element
    • F15B2211/3144Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/315Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/32Directional control characterised by the type of actuation
    • F15B2211/329Directional control characterised by the type of actuation actuated by fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/635Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/77Control of direction of movement of the output member
    • F15B2211/7741Control of direction of movement of the output member with floating mode, e.g. using a direct connection between both lines of a double-acting cylinder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/80Other types of control related to particular problems or conditions
    • F15B2211/85Control during special operating conditions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Operation Control Of Excavators (AREA)

Description

Kombinert oppvaskemaskin og tørkemaskin. Combined dishwasher and tumble dryer.

Den foreliggende oppfinnelse er rettet mot en kombinert oppvaskemaskin og tør-kemaskin, inneholdende en mellom en vaske- og skyllesone dreibart lagret servisekurv som drives av separat styrte drivmid-ler, hvor vaske- og skyllesonen fremkommer mellom et stort sett hesteskoformet vannsprederrør med strålene konsentrert innad mot serviset. The present invention is aimed at a combined dishwasher and dryer, containing a crockery basket rotatably stored between a washing and rinsing zone, which is driven by separately controlled propellants, where the washing and rinsing zone appears between a largely horseshoe-shaped water spreader tube with the jets concentrated inside against the tableware.

Hensikten med oppfinnelsen er å kom-me frem til en oppvaskemaskin som vasker serviset på en effektiv måte og dessuten kan anvendes som tørkemaskin for det fer_ digvaskete serviset. The purpose of the invention is to come up with a dishwasher which washes the crockery efficiently and which can also be used as a drying machine for the finished crockery.

Et nytt trekk ved oppfinnelsen er at A new feature of the invention is that

vannstrålene er rettet på skrå" mot serviset hovedsakelig i en retning motsatt kurvens omdréiningsretning, for derved å fremkalle en hurtig og effektiv skyllevirkning etter motstrømsprinsippet, med muligheter for variabel omdreiningshastighet ved hjelp av de separat styrte driftsmidler. the water jets are directed obliquely towards the crockery mainly in a direction opposite to the direction of rotation of the basket, in order to thereby induce a fast and efficient rinsing effect according to the counter-flow principle, with possibilities for variable rotation speed using the separately controlled operating means.

Ved hjelp av de separat styrte driftsmidler kan omdreiningshastigheten varie-res såvel under vasking og skylling som under selve tørkingen av serviset. With the help of the separately controlled operating means, the rotation speed can be varied both during washing and rinsing as well as during the actual drying of the tableware.

Ytterligere trekk ved oppfinnelsen vil fremgår av det etterfølgende under henvis-ning til den medfølgende tegning. Further features of the invention will be apparent from what follows with reference to the accompanying drawing.

På tegningen er det vist en oppvaske-makin 1 i hvis bunn 2 det er anbragt et varmeelement 3, eksempelvis en varme-kolbe, tilknyttet et kaldtvannsinntak 4 og et varmtvannsuttak 5 beregnet på konti-nuerlig oppvarming av kaldt vann til en temperatur på 45—70° C, eksempelvis gjennom spiralvinninger i et vannbad eller liknende. The drawing shows a dishwasher 1 in the bottom 2 of which a heating element 3, for example a heating flask, is placed, connected to a cold water inlet 4 and a hot water outlet 5 designed for continuous heating of cold water to a temperature of 45- 70° C, for example through spiral windings in a water bath or similar.

Foran vanninntaket 4 er det imidlertid In front of the water intake 4, however, it is

anbragt en regulerbar ventil 6 for struping og avstengning av kaldtvannstilførselen og bak vannuttaket 5 er det anbragt en ventil 7 som er innrettet til å regulere vann-mengden gjennom en grenledning 8 mens det er fri pasasje for vannet gjennom en grenledning 9. Ledningen 8 munner ut i bunnen 10 av en såpebeholder 11 som har et uttak 12 forbundet med grenledningen 9, slik at det kan mates inn i denne en ønsket mengde såpe til varmtvannet som er bestemt for vasking. Denne beholder 11 kan eventuelt forsynes med en ikke vist flottørinnretning som tjener til å dispen-sere såpen uten at denne blandes med vanntilførselen gjennom grenledningen 8 eller man kan anbringe ytterligere andre slike dispenseringsinnretninger i tilknyt-ning til grenledningen 9. Like over et såpe. blanderør 14 forgrener dette rør 14 seg til et øvré 15 og et nedre 16 vannsprederrør med et mellomliggende vannsprederrør 17 anbragt i rørpartiet 18 som vist eller eventuelt anbragt horisontalt over en bue av vaskebeholderens 1 periferi. Disse vann-sprederrør 15—17 er fortrinsvis anbragt i en tilnærmet hesteskoform slik at hver vannstråle 19 kan rettes mot så å si alle punkter av serviset med strålene 19 rettet horisontalt og vertikalt og dessuten med en viss skråstilling, fortrinsvis motsatt rota-sjonsretningen. Som vist på tegningen er imidlertid kurven 20 lagret på en akseltapp 21 og ytterligere understøttet langs ytter-kanten 22 av ruller 23. Kurven 20 er fortrinsvis avtakbar slik at den kan tas ut for fylling og tømming av skittent, hen-holdsvis rent servise og for rengjøring av opvaskmaskinen forøvrig. Oppvaskmaski- placed an adjustable valve 6 for throttling and shutting off the cold water supply and behind the water outlet 5 there is placed a valve 7 which is designed to regulate the amount of water through a branch line 8 while there is free passage for the water through a branch line 9. The line 8 opens out in the bottom 10 of a soap container 11 which has an outlet 12 connected to the branch line 9, so that a desired amount of soap can be fed into this for the hot water intended for washing. This container 11 can optionally be provided with a float device, not shown, which serves to dispense the soap without it mixing with the water supply through the branch line 8 or you can place further other such dispensing devices in connection with the branch line 9. Just above a soap. mixing pipe 14, this pipe 14 branches into an upper 15 and a lower 16 water spreader pipe with an intermediate water spreader pipe 17 arranged in the pipe section 18 as shown or possibly arranged horizontally over an arc of the washing container 1 periphery. These water spreader tubes 15-17 are preferably arranged in an approximate horseshoe shape so that each water jet 19 can be directed towards virtually all points of the crockery with the jets 19 directed horizontally and vertically and also with a certain slant, preferably opposite the direction of rotation. As shown in the drawing, however, the basket 20 is stored on an axle pin 21 and further supported along the outer edge 22 by rollers 23. The basket 20 is preferably removable so that it can be taken out for filling and emptying dirty, respectively clean crockery and for cleaning the dishwasher, incidentally. dishwasher

hen drives av trykkvann. På tegningen er det vist et vanninntak 24 styrt av en stru-peventil 25 som tilfører kaldtvann til et "sett dyser 26 som retter 'strålene mot et skovlhjul 27. Skovlhjulet 27 overfører drif-ten til kurven 20 over en tannhjulsutveks-ling 28. Det er videre ønskelig å skjerme .til skovlhjulet 27 og den øvrige driftsover-■føring 28 med en dekkplate 29 som hindrer "belegg av fett og liknende, matrester på disse deler. Det er dessuten ønskelig å skjerme varmeelementet 3 og såpebeholde-ren 11 med en skilleplate 30. Denne skilleplate 30 kan være utstyrt med renner 31 eller andre avledningsorganer som leder vannet bort fra det sentrale parti med driftsoverføring, lagertapper og liknende, og ut gjennom et vannuttak 32. Man kan dessuten som vist la denne dekkplaten 31 helle svakt til den ene siden, dvs. uttaks-enden 32. it is powered by pressurized water. The drawing shows a water intake 24 controlled by a throttle valve 25 which supplies cold water to a set of nozzles 26 which directs the jets towards a paddle wheel 27. The paddle wheel 27 transfers the drive to the basket 20 via a gear exchange 28. it is also desirable to shield the paddle wheel 27 and the other operating transmission 28 with a cover plate 29 which prevents the coating of grease and similar food residues on these parts. It is also desirable to shield the heating element 3 and the soap container 11 with a dividing plate 30. This dividing plate 30 can be equipped with gutters 31 or other diversion devices which lead the water away from the central part with operating transmission, bearing spigots and the like, and out through a water outlet 32. You can also, as shown, let this cover plate 31 lean slightly to one side, i.e. the outlet end 32.

Vaskebeholderen er forsynt med et av-takbart lokk 33 som tjener til å hindre skvett av vann og liknende. The washing container is provided with a removable lid 33 which serves to prevent splashing of water and the like.

Hele driftsmekanismen 27, 28 er dessuten beregnet på å kunne tas ut for ren-gjøring, idet de enkelte foterbare deler er festet på aksler 21, 34 ved hjelp av ikke viste kilespor eller liknende. The entire operating mechanism 27, 28 is also designed to be able to be removed for cleaning, as the individual footable parts are attached to shafts 21, 34 by means of keyways not shown or the like.

Virkemåten for oppvaskmaskinen er følgende: Etter å ha plasert skittent servise i kurven 20 tilføres varmtvann gjennom vannuttaket 5 og videre til vannsprederøre-ne 15—17 til en bestemt sone av kurven 20. Etter ønske kan man så tilføre vaskemid-del fra beholderen 11, styrt av ventilen 7, til det varme vannet, slik at såpen blandes med varmtvannet i ønsket grad. Ved å regulere tilførselen av vann gjennom ventilen 25 vil man så kunne drive kurven 20 med ønsket hastighet. Når kurven 20 <t>iar rotert tilstrekkelig lenge med vaskevirk-ning, stenges ventilen 7, hvorved man får tilført rent, varmt vann til skylling. Ved stengning av ventilen 7 stoppes skyllingen og kurven 20 vil kunne rotere uten tilførsel av vaske- eller skyllevann for tørking av serviset. The way the dishwasher works is as follows: After placing dirty crockery in the basket 20, hot water is supplied through the water outlet 5 and on to the water distribution pipes 15-17 to a specific zone of the basket 20. If desired, detergent can then be added from the container 11, controlled by valve 7, to the hot water, so that the soap is mixed with the hot water to the desired degree. By regulating the supply of water through the valve 25, it will then be possible to drive the basket 20 at the desired speed. When the basket 20 <t>iar rotated for a sufficiently long time with a washing effect, the valve 7 is closed, whereby one obtains supplied with clean, warm water for rinsing. By closing the valve 7, the rinsing is stopped and the basket 20 will be able to rotate without the supply of washing or rinsing water for drying the crockery.

En vesentlig fordel med oppfinnelsen er at serviset må passere et strålefelt av vaskevann eller skyllevann med konsen-trerte stråler, virkende etter motstrøms-prinsippet, hvorved vasikingen kan skje med god utnyttelse av det varme vannet, idet også avrenningssonen hjelper til med vas-kingen og skyllingen. Det må imidlertid un-derstrekes at det viste utførelseseksempel kun er vist som en illustrasjon på oppfin-nelsestanken og at oppfinnelsen kan endres innenfor rammen av de etterfølgende på-stander. Det er således mulig å tilføre tilstrekkelig varmt vann til oppvaskmaskinen direkte fra en varmtvannsbereder. A significant advantage of the invention is that the crockery must pass through a jet field of washing water or rinsing water with concentrated jets, working according to the counter-flow principle, whereby the washing can take place with good utilization of the hot water, as the run-off zone also helps with the washing and the rinse. However, it must be emphasized that the embodiment shown is only shown as an illustration of the inventive idea and that the invention can be changed within the scope of the subsequent claims. It is thus possible to supply sufficient hot water to the dishwasher directly from a water heater.

Claims (2)

1. Kombinert oppvaskemaskin og tørke-maskin, inneholdende en mellom en vaske-og skyllesone dreibart lagret servisekurv som drives av separat styrte driftsmidler, hvor vaske- og skyllesonen fremkommer mellom et stort sett hesteskoformet vann-sprederrør med strålene konsentrert innad mot serviset, karakterisert ved at vannstrålene er rettte på skrå mot serviset hovedsakelig i en retning motsatt kurvens omcireiningsretning, for derved å fremkalle en hurtig og effektiv skyllevirkning etter motstrømsprinsippet, med muligheter for variabel omdreiningshastighet ved hjelp av de separat styrte driftsmidler.1. Combined dishwasher and drying machine, containing a crockery basket rotatably stored between a washing and rinsing zone, which is operated by separately controlled operating means, where the washing and rinsing zone appears between a large set of horseshoe-shaped water-dispersing tubes with the jets concentrated inwards towards the crockery, characterized by that the water jets are directed obliquely towards the crockery mainly in a direction opposite to the direction of rotation of the basket, in order to thereby induce a fast and efficient rinsing effect according to the counter-current principle, with possibilities for variable rotation speed using the separately controlled operating means. 2. Maskin i samsvar med påstand 1, karakterisert ved at kurvens drift styres av en uavhengig regulerbar vanntilførsel som virker mot et passende skovlhjul til rotasjon av kurven.2. Machine in accordance with claim 1, characterized in that the operation of the basket is controlled by an independently adjustable water supply which acts against a suitable paddle wheel for rotation of the basket.
NO4634/69A 1968-11-29 1969-11-21 NO121326B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE16290/68A SE326666B (en) 1968-11-29 1968-11-29

Publications (1)

Publication Number Publication Date
NO121326B true NO121326B (en) 1971-02-08

Family

ID=20302008

Family Applications (1)

Application Number Title Priority Date Filing Date
NO4634/69A NO121326B (en) 1968-11-29 1969-11-21

Country Status (3)

Country Link
US (1) US3630121A (en)
NO (1) NO121326B (en)
SE (1) SE326666B (en)

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US3998134A (en) * 1974-11-08 1976-12-21 Tadeusz Budzich Load responsive fluid control valves
US3960059A (en) * 1974-12-09 1976-06-01 Caterpillar Tractor Co. Fast exhaust circuit for hydraulic jacks
US4034815A (en) * 1975-03-20 1977-07-12 Caterpillar Tractor Co. Blade lift float circuit for motor graders
US4024796A (en) * 1975-09-24 1977-05-24 Caterpillar Tractor Co. Float control electrical circuit for a blade
US4581893A (en) * 1982-04-19 1986-04-15 Unimation, Inc. Manipulator apparatus with energy efficient control
DE3245288A1 (en) * 1982-12-03 1984-06-14 O & K Orenstein & Koppel Ag, 1000 Berlin METHOD FOR SAVING ENERGY WHEN SETTING AN EQUIPMENT CYLINDER ON A HYDRAULIC EXCAVATOR BY A HYDRAULIC CIRCUIT
JPH01260125A (en) * 1988-04-07 1989-10-17 Yutani Heavy Ind Ltd Hydraulic circuit for hydraulic shovel
EP0381778A4 (en) * 1988-08-02 1990-12-27 Kabushiki Kaisha Komatsu Seisakusho Moving speed regulator for hydraulically driven working machines
DE3915919C2 (en) * 1989-05-16 1996-09-05 Rexroth Mannesmann Gmbh Valve arrangement
US5331882A (en) 1993-04-05 1994-07-26 Deere & Company Control valve system with float valve
SE524147C2 (en) * 2002-11-19 2004-07-06 Volvo Constr Equip Holding Se System for handling an implement of a vehicle
JP2004301214A (en) * 2003-03-31 2004-10-28 Hitachi Constr Mach Co Ltd Hydraulic driving device for work vehicle
DE102005059239B4 (en) * 2005-12-12 2014-06-26 Linde Hydraulics Gmbh & Co. Kg valve means
KR101877988B1 (en) * 2011-12-28 2018-07-12 두산인프라코어 주식회사 Boom cylinder control circuit for construction machinery

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US2219967A (en) * 1940-10-29 Servomotor fob aircraft
US3133474A (en) * 1957-10-14 1964-05-19 Swift & Co Hydraulic feed means
US3220318A (en) * 1963-11-21 1965-11-30 John R Mcguire Hydraulic system
US3313316A (en) * 1964-06-01 1967-04-11 Clark Equipment Co Relief and anti-cavitation valve assembly
US3472127A (en) * 1967-12-12 1969-10-14 Caterpillar Tractor Co Control circuit for bulldozers used in pushing
US3508400A (en) * 1968-07-11 1970-04-28 Jean Mercier Position control system

Also Published As

Publication number Publication date
US3630121A (en) 1971-12-28
SE326666B (en) 1970-07-27

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