BE520847A - - Google Patents

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Publication number
BE520847A
BE520847A BE520847DA BE520847A BE 520847 A BE520847 A BE 520847A BE 520847D A BE520847D A BE 520847DA BE 520847 A BE520847 A BE 520847A
Authority
BE
Belgium
Prior art keywords
cylinder
piston
line
fluid
shock absorber
Prior art date
Application number
Other languages
French (fr)
Publication of BE520847A publication Critical patent/BE520847A/fr

Links

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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/22—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with one or more cylinders each having a single working space closed by a piston or plunger
    • F16F9/26—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with one or more cylinders each having a single working space closed by a piston or plunger with two cylinders in line and with the two pistons or plungers connected together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • F15B11/076—Combined pneumatic-hydraulic systems with pneumatic drive or displacement and speed control or stopping by hydraulic braking
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/20—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with the piston-rod extending through both ends of the cylinder, e.g. constant-volume dampers
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • F16F9/483—Arrangements for providing different damping effects at different parts of the stroke characterised by giving a particular shape to the cylinder, e.g. conical
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers
    • F15B2211/7056—Tandem cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/755—Control of acceleration or deceleration of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Damping Devices (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



  AMORTISSEUR. 



   L'invention est relative à un amortisseur pour freiner un corps se déplaçant selon une ligne droite, cet amortisseur se compose d'un cylin-' dre contenant un fluide et d'un piston ;le cylindre ou le piston est accouplé audit corps. Un cylindre rempli d'un fluide et comportant un by-pass pour ce dernier peut être très bien utilisé pour brider la vitesse d'un corps mobile et ce sur toute la course de ce dernier. Dans le cas où le corps ne doit être freiné qu'aux extrémités de sa course, un tel amortisseur ne peut être utilisé que si l'on a disposé entré le corps et l'amortisseur un accouplement à course libre. Le plus souvent un tel accouplement correspond à une complication. 



   L'objet de l'invention est de procurer un amortisseur comportant un cylindre avec piston et by-pass pour le fluide qui peut être accouplé de façon fixe au corps qui doit être freiné, mais qui laisse cependant à ce dernier une course libre ou à peu près libre. Un tel amortisseur est d'une grande importance pour des dispositifs mobiles, comme des interrupteurs électriques, dans lesquelles l'organe mobile, par exemple le bras de contact, dont la course est fortement accélérée au début doit être freiné en fin de course. L'invention réside dans le fait que le cylindre présente dans une zone déterminée entre ses extrémités, un plus grand diamètre intérieur qu'à ses extrémités. 



   Cette construction permet de donner localement au repassage entre le piston et la paroi du cylindre une valeur telle que la résistance opposée à la circulation du fluide, lors du déplacement du piston soit très réduite dans la zone correspondante du cylindre, de façon que le corps ne soit presque pas freiné dans la partie de sa course correspbndant à la dite zone. 

 <Desc/Clms Page number 2> 

 



   Si le corps doit être accéléré et être freiné progressivement, le diamètre intérieur du cylindre peut être avantageusement agrandi pro- gressivement à partir des extrémités du cylindre en direction d'un endroit ou d'une   z8ne   situé entre ces extrémités. 



   Dans beaucoup de cas, plus particulièrement pour les interrup- teurs, il est désirable, que l'organe mobile soit dès le début lancé à grande vitesse et ne soit freiné qu'à la fin de sa course. Suivant l'in- vention on peut facilement satisfaire à ce désir en ne remplissant le cy- lindre que partiellement au moyen d'un fluide. 



   Une forme d'exécution,donnée à titre d'exemple non limitatif, est représentée au dessin annexé, dans lequel : une tige de piston 1, est accouplée au bras de contact d'un in- terrupteur électrique (non représenté). Cette tige de piston est munie d'un piston 2 disposé de façon mobile dans un cylindre 3. Du gaz sous haute pression peut être amené par la canalisation .4 Il est également possible d'amener du gaz sous pression par l'orifice 5. A l'aide de ce dispositif de commande pneumatique le bras de contact peut être enclenché et déclenché à grande vitesse. 



   La tige de piston 1 est prolongéeà sa partie inférieure par une pièce 6, qui traverse de façon étanche le couvercle inférieur 7 du cylindre
3 et qui porte à son extrémité inférieure un piston 8. Ce piston est mobile dans un cylindre 10 contenant un fluide 9. Le cylindre 10, le piston 8 et le fluide 9   constituent   l'amortisseur. 



   Le diamètre intérieur du cylindre 10 n'est pas constant sur toute sa longueur. De l'extrémité inférieure jusqu'au trait 11, le diamètre intérieur du cylindre 10 est égal ou presque égal à celui du piston 8. A partir du trait 11 jusqu'au trait 12 ce diamètre croît graduellement. A partir du trait 12 jusqu'au trait 13 le diamètre demeure constant, tandis qu'il diminue progressivement à partir du trait 13 jusqu'au trait 14 jus- qu'a atteindre une valeur égale ou presque égale à celle du piston 8. 



   Lorsque le piston 8 se trouve à sa position extrême inférieure le cylindre
10 n'est rempli de fluide que jusqu'au niveau 15. En outre, l'amortisseur est muni d'un by-pass, dont le passage est éventuellement réglable (non représenté) et dont seul les canaux de raccord   16,17   sont représentés .aux extrémités du cylindre 10. 



   Si du gaz sous pression est amené par la canalisation 4, le pis- ton 2 avec la tige 1,6 est refoulé vers le haut à grande vitesse. Au début de cette course le piston 8 de l'amortisseur ne subit presque aucune résistance, .parce que le fluide 9 est entraîné vers le haut et dès le moment où l'espace au dessus du piston 8 est entièrement rempli de fluide, le cylindre est devenu suffisamment large pour que le fluide puisse s'échapper presque sans résistance vers le bas le long du piston 8.

   Dès que le piston 8 a at- teint le niveau marqué par le trait 14, il s'adapte exactement dans le cy- lindre et le fluide se trouvant au dessus du piston est enfermé, de façon que celui-ci ne peut être refoulé que par le by-pass raccordé aux canaux   16,17.   Conformément à la résistance subie dans ce by-pass le piston 8 et, par conséquent, le bras de contact sera freiné plus ou moins fort. 



   Lors de la course descendante, c'est-à-dire, lors de l'enclen- chement du bras de contact, le même processus se déroule à peu près. Dans ce cas, la tige de piston 6 est, à peu près, attirée jusqu'au fond du cylindre 10, le niveau de liquide s'établit à l'endroit indiqué par le trait
18. Le piston ne sera donc'pas freiné au début, mais à la fin de sa course. 



   Le by-pass raccordé aux canaux 16, 17 n'est pas indispensable.La 

 <Desc/Clms Page number 3> 

 fuite réalisée par cette canalisation peut également   l'être   dans le cylindre 10, si le diamètre du cylindre s'accorït progressivement à partir des extrémités du cylindre jusqu'à un endroit ou une zone situé entre ces extrémités, de façon que la fuite entre la paroi du cylindre et le piston 8 diminue vers les extrémités du cylindre et que la résistance subie par la piston 8, c'est -à-dire le freinage, augmente continuellement. Dans ce cas, l'espace intérieur dy cylindre 10, tant au dessous du trait 11 qu'au dessus du trait   14,   est conique ou presque conique. 



   La ligne délimitant la surface intérieure du cylindre 10 peut être une ligne brisée, une   ligne   courbe ou une combinaison de ces deux lignes. 



   REVENDICATIONS 
1) Amortisseur destiné au freinage d'un corps se déplaçant selon une ligne droite et se   composant   d'un cylindre contenant un fluide et   d'un   piston, le cylindre ou le piston étant accouplé avec ce corps caractérisé en ce que le cylindre présente dans une z8ne déterminée entre ses extrémités un plus grand diamètre intérieur qu'à ses extrémités.



   <Desc / Clms Page number 1>
 



  DAMPER.



   The invention relates to a shock absorber for braking a body moving in a straight line, this shock absorber consists of a cylinder containing a fluid and a piston, the cylinder or piston is coupled to said body. A cylinder filled with a fluid and having a bypass for the latter can be very well used to restrain the speed of a moving body and this over the entire stroke of the latter. In the case where the body must be braked only at the ends of its stroke, such a shock absorber can only be used if a free-stroke coupling has been placed between the body and the shock absorber. Most often such a coupling corresponds to a complication.



   The object of the invention is to provide a shock absorber comprising a cylinder with piston and by-pass for the fluid which can be coupled in a fixed manner to the body which is to be braked, but which nevertheless leaves the latter free to travel or to pretty much free. Such a shock absorber is of great importance for mobile devices, such as electric switches, in which the movable member, for example the contact arm, the stroke of which is greatly accelerated at the start must be braked at the end of the stroke. The invention resides in the fact that the cylinder has, in a determined zone between its ends, a larger internal diameter than at its ends.



   This construction makes it possible to give locally to the ironing between the piston and the cylinder wall a value such that the resistance to the flow of the fluid, during the displacement of the piston is very reduced in the corresponding zone of the cylinder, so that the body does not or hardly any braked in the part of its course corresponding to the said zone.

 <Desc / Clms Page number 2>

 



   If the body is to be accelerated and braked progressively, the inside diameter of the cylinder can advantageously be increased gradually from the ends of the cylinder towards a place or area between these ends.



   In many cases, more particularly for switches, it is desirable for the movable member to be started at high speed from the start and not to be braked until the end of its travel. According to the invention, this desire can easily be satisfied by filling the cylinder only partially with a fluid.



   One embodiment, given by way of non-limiting example, is shown in the appended drawing, in which: a piston rod 1 is coupled to the contact arm of an electrical switch (not shown). This piston rod is provided with a piston 2 disposed movably in a cylinder 3. High pressure gas can be supplied through the pipe. 4 It is also possible to supply pressurized gas through the orifice 5. With the help of this pneumatic control device the contact arm can be switched on and off at high speed.



   The piston rod 1 is extended in its lower part by a part 6, which passes in a sealed manner through the lower cover 7 of the cylinder.
3 and which carries at its lower end a piston 8. This piston is movable in a cylinder 10 containing a fluid 9. The cylinder 10, the piston 8 and the fluid 9 constitute the damper.



   The internal diameter of cylinder 10 is not constant over its entire length. From the lower end up to line 11, the internal diameter of cylinder 10 is equal or almost equal to that of piston 8. From line 11 to line 12 this diameter gradually increases. From line 12 to line 13 the diameter remains constant, while it gradually decreases from line 13 to line 14 until reaching a value equal or almost equal to that of piston 8.



   When the piston 8 is in its lower extreme position, the cylinder
10 is only filled with fluid up to level 15. In addition, the damper is provided with a bypass, the passage of which is possibly adjustable (not shown) and of which only the connection channels 16,17 are shown at the ends of cylinder 10.



   If pressurized gas is supplied through line 4, piston 2 with rod 1.6 is forced upwards at high speed. At the start of this stroke, the piston 8 of the shock absorber undergoes almost no resistance, because the fluid 9 is driven upwards and as soon as the space above the piston 8 is completely filled with fluid, the cylinder became wide enough that fluid could escape almost unresistingly down the piston 8.

   As soon as the piston 8 has reached the level marked by the line 14, it fits exactly in the cylinder and the fluid located above the piston is locked in, so that the latter can only be delivered by the bypass connected to channels 16,17. In accordance with the resistance undergone in this bypass the piston 8 and, consequently, the contact arm will be braked more or less strongly.



   In the downstroke, that is, when the contact arm is engaged, roughly the same process takes place. In this case, the piston rod 6 is approximately drawn to the bottom of the cylinder 10, the liquid level is established at the place indicated by the line
18. The piston will therefore not be braked at the start, but at the end of its stroke.



   The bypass connected to channels 16, 17 is not essential.

 <Desc / Clms Page number 3>

 leakage produced by this pipe can also be in the cylinder 10, if the diameter of the cylinder increases progressively from the ends of the cylinder to a place or an area located between these ends, so that the leak between the wall of the cylinder and the piston 8 decreases towards the ends of the cylinder and the resistance to which the piston 8, that is to say the braking, increases continuously. In this case, the interior space of cylinder 10, both below line 11 and above line 14, is conical or nearly conical.



   The line delimiting the inner surface of cylinder 10 may be a broken line, a curved line or a combination of these two lines.



   CLAIMS
1) Shock absorber intended for braking a body moving in a straight line and consisting of a cylinder containing a fluid and a piston, the cylinder or the piston being coupled with this body characterized in that the cylinder has in a z8ne determined between its ends a larger internal diameter than at its ends.

Claims (1)

2) ,Amortisseur suivant la revendication 1, caractérisé en ce que le diamètre intérieur du cylindre s'accroît progressivement à partir des extrémités du cylindre en direction d'un endroit ou d'une zone situé entre ses extrémités. 2) A shock absorber according to claim 1, characterized in that the internal diameter of the cylinder increases progressively from the ends of the cylinder towards a place or an area located between its ends. 3) Amortisseur suivant les revendications l'ou 2, caractérisé en ce que le cylindre n'est rempli que partiellement au moyen d'un fluide. 3) A shock absorber according to claims or 2, characterized in that the cylinder is only partially filled with a fluid.
BE520847D BE520847A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417683A1 (en) * 1978-02-16 1979-09-14 Merlin Gerin END-OF-STROKE DAMPER OF AN ELECTRICAL CONTACT
WO1997035114A1 (en) * 1996-03-19 1997-09-25 Tox Pressotechnik Gmbh Hydropneumatic machine tool
WO2010037470A1 (en) * 2008-10-01 2010-04-08 Nordischer Maschinenbau Rud. Baader Gmbh + Co. Kg Device and method for processing meat, particularly fish
WO2014102016A1 (en) * 2012-12-28 2014-07-03 Fm Energie Gmbh & Co.Kg Hydraulic damper and use thereof in pendulum absorbers for wind turbines
US10393211B2 (en) 2017-02-08 2019-08-27 Beijingwest Industries Co., Ltd. Hydraulic damper with a hydraulic stop arrangement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417683A1 (en) * 1978-02-16 1979-09-14 Merlin Gerin END-OF-STROKE DAMPER OF AN ELECTRICAL CONTACT
WO1997035114A1 (en) * 1996-03-19 1997-09-25 Tox Pressotechnik Gmbh Hydropneumatic machine tool
WO2010037470A1 (en) * 2008-10-01 2010-04-08 Nordischer Maschinenbau Rud. Baader Gmbh + Co. Kg Device and method for processing meat, particularly fish
CN102164494A (en) * 2008-10-01 2011-08-24 北欧机械制造鲁道夫巴德尔有限及两合公司 Device and method for processing meat, particularly fish
CN102164494B (en) * 2008-10-01 2014-07-23 北欧机械制造鲁道夫巴德尔有限及两合公司 Device and method for processing fish
US8968059B2 (en) 2008-10-01 2015-03-03 Nordischer Maschinenbau Rud. Baader Gmbh + Co.Kg Device and method for processing meat, particularly fish
WO2014102016A1 (en) * 2012-12-28 2014-07-03 Fm Energie Gmbh & Co.Kg Hydraulic damper and use thereof in pendulum absorbers for wind turbines
US10393211B2 (en) 2017-02-08 2019-08-27 Beijingwest Industries Co., Ltd. Hydraulic damper with a hydraulic stop arrangement

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