CA2500395A1 - Oscillating motor - Google Patents

Oscillating motor Download PDF

Info

Publication number
CA2500395A1
CA2500395A1 CA002500395A CA2500395A CA2500395A1 CA 2500395 A1 CA2500395 A1 CA 2500395A1 CA 002500395 A CA002500395 A CA 002500395A CA 2500395 A CA2500395 A CA 2500395A CA 2500395 A1 CA2500395 A1 CA 2500395A1
Authority
CA
Canada
Prior art keywords
piston
pressure
advancing
pivot motor
pressure means
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002500395A
Other languages
French (fr)
Inventor
Christian Voy
Gernot Sammet
Wolfgang Freund
Andreas Kissler
Jurgen Schulze
Daniel Lezock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sachsenring Zwickau AG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2500395A1 publication Critical patent/CA2500395A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/068Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
    • 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
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)

Abstract

The invention relates to an oscillating motor comprising a housing (13) which is closed on two sides by covers (14,15) and provided with at least one first piston (1.1) which is axially moveable inside said housing (13) and with pressure means connections which extend as far as pressure chambers in front of and to the rear of the first piston (1.1), also provided with a rotating shaft (10) which can be rotated by means of an axial movement of the piston (1.1). According to the invention, at least one connecting rod (7), which is mounted in a ball and socket joint on both ends thereof and which transmits torque to the rotating shaft (10) when the piston (1.1) moves axially, is arranged between the first piston (1.1) and the rotating shaft (10).

Description

Specification Pivot motor The invention relates to a pivot motor according to the preamble of the first claim and is particularly used in active chassis for chassis stabilization. DE 197 54 539 C2 describes a pivot motor that has a cylinder having radial ribs on the inside of the cylinder; furthermore, a motor shaft having vanes is disposed in the cylinder, whereby the ribs and the vanes form working chambers to which a hydraulic pressure can be applied, causing a rotation of the motor shaft relative to the housing.
DE 36 O1 220 C2 describes a pivot motor activated by pressure means, in which the pivoting movement is achieved by means of pairs of threads that engage into one another. In these solutions, the pivot motor has a high weight and the torque that can be transferred is relatively low.
It is the task of the invention to develop a pivot motor that allows the transfer of higher torques, with a light structure and therefore a low weight.
This task is accomplished with the characterizing features of the first claim. Advantageous embodiments are evident from the dependent claims.
In this connection, the pivot motor consists of a housing that is closed off with lids on both sides, and has at least one axially movable first piston in the housing as well as pressure agent connections, which reach to pressure chambers in front of and behind the first piston, whereby a rotary shaft can'be put into rotation by means of an axial movement of the piston.
According to the invention, at least one coupler is disposed between the first piston and the rotary shaft, which coupler is mounted in rotary-joint/ball-joint manner at its two ends, and transfers a rotary moment to the rotary shaft during an axial movement of the piston.
The coupler has balls at its two ends, which are mounted, respectively, in a carrier that is attached to a first, piston and in a carrier that is attached to the rotary shaft, in the manner of a ball joint. In this connection, the coupler can be attached to the rotary shaft by way of an intermediate element.
There is a pressure chamber on both sides of the first piston, in each instance.
In this connection, a pressure chamber is disposed between the lid on the piston side and the first piston, to which a pressure agent line leads, and another pressure chamber is disposed between the first piston (1.1) and the rotary shaft, to which another pressure agent line leads.
The rotary shaft is supported on the inside of the lid by way of a pressure bearing that absorbs axial forces, and the first piston is guided axially by means of a longitudinal tooth mechanism. This is preferably done by way of a slide cuff having a spline bore hub tooth mechanism, which cuff is disposed on the lid located on the piston side.
In total, a piston with the carrier attached to it and the couplers mounted there on one end, as well as the carriers located at the other end of the couplers form an advancing/pivoting unit.
It is also possible for two or more of these advancing/pivoting units to be disposed in a housing, whereby preferably, two are arranged in pairs and as mirror images of one another, in each instance, so that their pistons point towards one another, but are separated by a partition and connected with one another so as to rotate together, by way of a shaft. A pressure chamber having a pressure agent feed line is formed between each piston and the partition and also between the two carriers of an advancing/pivoting unit, in each instance.
In this way, it is possible to switch any desired number of advancing/pivoting units one behind the other, in combination with pressure chambers and pressure agent lines that lie between them.
In this connection, the advancing/pivoting unit first disposed on the other end, lying opposite the rotary shaft, is connected with its carrier, which is attached to the side of the couplers facing away from the piston, to rotate with the housing or a lid that terminates the housing on this side. The subsequent advancing/pivoting units are each mounted in the housing to be axially and radially movable. By switching pistons, pressure chambers, and rotary shafts one behind the other, the angle of rotation and the torque can be adapted to the requirements, in targeted manner.
In this connection, the carriers are preferably structured in such a manner that the balls of the couplers are elastically accommodated.
The invention will be explained in greater detail in the following, using exemplary embodiments.
The drawing shows:
Fig. 1: a fundamental representation of a pivot motor in the initial position, Fig. 2: the pivot motor according to Fig. 1 after a pivot movement has been performed;
Fig. 3 a fundamental representation of an advancing/pivoting unit;
Fig. 4: a fundamental representation of a pivot motor having two advancing/pivoting units disposed as mirror images of one another.
Fig. 1 shows a fundamental representation of a pivot motor in the initial position. A first piston 1.1, which is mounted to be fixed with regard to rotation and axially displaceable, by way of a slide cuff 3 having a spline bore hub tooth mechanism, is disposed in a housing 13. In this connection, the slide cuff sits on a shoulder 14.1 of the lid 14, which closes off the housing 13 on this side. A pressure chamber D1 is formed between first piston 1.1 and lid 14, to which chamber a pressure agent feed line 2 leads. On the side of the first piston 1.1 that faces away from the lid 14, the balls 6 of the one end of four ball-type rods (coupler 7) are mounted to pivot in spherical segments, by way of a carrier 4, 5. The balls 6 of the opposite ends of the ball-type rods (coupler 7) are also mounted to pivot in spherical segments of a second carrier 8, 9.
The balls 6 and the spherical segments of the carriers 4, 5 and 8, 9 thereby form ball joints. A second pressure chamber D2 having a pressure agent feed line 12 is formed between the two carriers 4, 5 and 8, 9. The carrier 8, 9 is connected with the rotary shaft 10, which is supported on the other housing lid 15 by way of a pressure bearing 11, by way of an intermediate piece S. In this connection, the articulated shaft 10 projects through the housing lid 15. The second carrier 8, 9, the intermediate piece S, and the rotary shaft 10 are connected with one another and are mounted to rotate in the housing. The four ball-type rods (couplers 7) are all inclined at the same angle and disposed at equal intervals on a common arc. The lids 14 and 15 are tightly welded to the housing 13. The first piston 1.1 and the intermediate piece form a seal towards the inside wall of the housing 13, and the lid 15 forms a seal towards the outside diameter of the rotary shaft, by means of seals D.
The method of action is as follows:

_ 7 -When the cylindrical first piston 1.1 is activated by way of the first hydraulic connector 2, the first piston 1.1 is displaced, while being fixed with regard to rotation, by means of the slide cuff 3 having a spline hub bore tooth mechanism, in the direction of the rotary shaft 10. The piston force is transferred to the carrier 8, 9 by way of the double-sided ball-type rods (couplers 7). As a result of the special slant of the four couplers 7, an axial force component and one that works in the circumference direction are produced in the carrier, whereby the four couplers 7 incline more and more. The circumference component brings about the desired rotary force on the rotary shaft by way of the intermediate piece; the amount of this force is a function of the piston force and the spatial angle of the ball-type rod, in each instance. The axial component is compensated by way of the pressure bearing 11.
The opposite direction of rotation until the position of the first piston 1.1 according to Fig. 2 is reached is brought about by acting on the pressure chamber D2 by way of the hydraulic connector 12. In this process, the clearance angle of the couplers 7 becomes greater and greater. The housing 13, with the housing lid 14, is designed as a counter-bearing (fixed bearing) to the rotary shaft 10, so that the torque of the pivot motor occurs between housing 13 and rotary shaft 10.

A fundamental representation of the decisive advancing/pivoting unit V/S is shown in Fig. 3.
This consists essentially of the piston (here, first piston 1.1), the carrier 4, 5 attached to it, which can, of course, also be integrated into the piston, the couplers 7 that are mounted in the carrier 4, 5 at one end, and the second carrier 8, 9 at the other end of the couplers. Tn this connection, the carriers 4, 5, and 8, 9 are preferably configured in two parts.
It is possible to switch several of these advancing/pivoting units V/S one behind the other, in combination with corresponding pressure chambers and pressure feed lines, in order to adjust the pivot angle of the rotary shaft and the torque.
A fundamental representation of a pivot motor having two advancing/pivoting units V/S1, V/S2 disposed as mirror images of one another is shown in Fig. 4. The first piston 1.1 of the first advancing/pivoting unit V/S1 and the second piston 1.2 of the second advancing/pivoting unit V/S2 point towards one another. A partition 20 is provided between the two advancing/pivoting units V/S1, V/S2; a shaft 21 projects through _ g _ it, which couples the two pistons 1.1, 1.2 of the advancing/pivoting units V/S1, V/S2 with one another to rotate together. The first advancing/pivoting unit V/Sl, with the carrier 8, 9, is connected with the rotary shaft 10 by way of an intermediate piece S. The carrier 8, 9 of the second advancing/pivoting unit V/S2 is firmly connected with the lid 14. The housing 13 is configured in two parts and borders on the partition 20 on both sides. The first piston 1.1, the second piston 1.2, and the carrier 8, 9 as well as the intermediate piece S attached to it, and the rotary shaft 10, are mounted to rotate in the housing 13. In this connection, - a pressure chamber D1 having a pressure agent line 2.1 is formed between the partition 20 and the first piston 1.1, - a second pressure chamber having a pressure agent line 12.1 is formed between the two carriers 4, 5 and 8, 9 of the first advancing/pivoting unit V/S1, - a pressure chamber D3 having a pressure agent line 2.2 is formed between the partition 20 and the second piston 1.2, - and a pressure chamber D4 having a pressure feed line 12.2 is formed between the two carriers 4, 5 and 8, 9 of the second advancing/pivoting unit V/S2.
The method of effect of this pivot motor is as follows:

When pressure is applied to the pressure chamber D4 by way of the pressure agent line 12.2, the second piston 1.2 is moved in the direction towards the rotary shaft 10, and therefore, due to the coupling with the shaft 21, the first piston 1.1 is also moved axially in that direction. By means of the couplers 7 of the second advancing/pivoting unit V/S2, a torque is exerted on the second piston 1.2 and on the first piston 1.1, which is transferred to the rotary shaft 10 by way of the couplers 7 of the first advancing/pivoting unit V/S1, thereby causing the shaft to rotate. The force component and therefore the torque can be increased by applying pressure to the pressure chamber D1 by way of the pressure agent line 2.1. In this connection, the couplers 7 of the second advancing/pivoting unit V/S2 are "stretched" in the direction towards the longitudinal axis of the pivot motor. The couplers 7 of the first advancing/pivoting unit V/S1 remain in their slanted position due to their mirror-image arrangement, and act as a rigid transfer element between the first piston 1.1 and the rotary shaft 10.
The opposite direction of rotation of the rotary shaft 10 is achieved by applying pressure to the pressure chamber D2 by way of the pressure agent line 12.1 and, if necessary, by applying pressure to the pressure chamber D3 by way of the pressure agent line 2.2. In this connection, it is obvious that when pressure is applied to one pressure chamber, the pressure in the pressure chamber that has the opposite effect is reduced. The system can work hydraulically and pneumatically. In both cases, corresponding seals D must be provided, which guarantee that the pivot motor does not leak.
Vibration damping can be achieved by means of coupling the pressure chambers D2 and D4 by way of the pressure agent lines 12.1, 12.2 and/or by means of coupling the pressure chambers D1 and D3 by way of the pressure agent lines 2.1, 2.2, by way of the volume flow of the hydraulics of the pneumatics. It is then possible to use the structural unit also without a rotary shaft, as a hydraulic or pneumatic vibration damper, or with a corresponding combination.

Claims (12)

Claims
1. Pivot motor activated by pressure means, consisting of a housing (13) that is closed off with lids (14, 15) on both sides, and having at least one axially movable piston (1.1) in the housing (13) and pressure means connections, which reach to pressure chambers in front of and behind the first piston (1.1), and having a rotary shaft (10) that can be put into rotation by means of an axial movement of the piston (1.1), whereby at least one coupler (7) is disposed between the first piston (1.1) and the rotary shaft (10), which coupler is mounted in ball-joint manner at its two ends, and transfers a rotary moment to the rotary shaft (10) during an axial movement of the piston (1.1) that is fixed with regard to rotation, characterized in that the pivot motor activated by pressure means is used for active chassis regulation with vibration damping.
2. Pivot motor activated by pressure means, according to claim 1, characterized in that the rotary shaft (10) is supported on the inside of the lid (15), by way of a pressure bearing (11) that absorbs axial forces.
3. Pivot motor activated by pressure means, according to claim 1 or 2, characterized in that the first piston (1.1) is guided with regard to rotation and axially by means of a longitudinal tooth mechanism.
4. Pivot motor activated by pressure means, according to claim 3, characterized in that the first piston (1.1) fixed with regard to rotation is mounted, on its inside diameter, on a slide cuff (3) that is disposed on the lid (14) located on the piston side, having a spline bore hub tooth mechanism, so as to be axially displaceable.
5. Pivot motor activated by pressure means, according to one of claims 1 to 4, characterized in that a piston (1.1/1.2), in each instance, forms an advancing/pivoting unit (V/S) with the couplers (7) that follow the pistons (1.1/1.2) fixed with regard to rotation at their one end, and the carriers (4, 5/8, 9) disposed at the other end of the couplers (7).
6. Pivot motor activated by pressure means, according to claim 5, characterized in that in addition to the first piston (1.1), a second piston (1.2) is disposed in the housing (13), whereby the two pistons (1.1, 1.2) are separated by a partition (20) and connected with one another by way of a shaft (21), and the second piston (1.2) is connected with the carrier (8, 9) located on that side by way of a coupler (7), in such a manner that two advancing/pivoting units (V/S) are formed in the housing (13) as mirror images of one another.
7. Pivot motor activated by pressure means, according to claim and 6, characterized in that a pressure chamber (D4) having a pressure agent line (12.2) is disposed between lid (14) and second piston (1.2), and that if pressure is applied to the pressure chamber (D4), the second piston (1.2), and with it, the first piston (1.1) that is connected to rotate with it by way of the shaft (21), perform a combined advancing and rotary movement, and therefore the rotary shaft (10) can have a torque that causes its rotation applied to it.
8. Pivot motor activated by pressure means, according to one of claims 5 to 7, characterized in that a pressure chamber (D1) or (D2) is disposed between one of the two pistons (1.1, 1.2) and the partition (20), or that a pressure chamber (D1) and a pressure chamber (D3) is disposed between each piston (1.1, 1.2) fixed with regard to rotation and the partition (20), in each instance.
9. Pivot motor activated by pressure means, according to one of claims 5 to 8, characterized in that any desired number of advancing/pivoting units (V/S) can be switched one behind the other, in connection with pressure chambers that lie between them.
10. Pivot motor activated by pressure means, according to claim 9, characterized in that the advancing/pivoting unit (V/S) that follows an advancing/pivoting unit (V/S) is structured in a mirror image of the preceding advancing/pivoting unit (V/S).
11. Pivot motor activated by pressure means, according to one of claims 5 to 10, characterized in that a partition (20) is located between two pivoting/advancing units (V/S) disposed as a mirror image relative to one another, in each instance, and that the two pivoting/advancing units (V/S) are connected to rotate with one another.
12. Pivot motor activated by pressure means, according to one of claims 1 to 11, characterized in that the bearing of all of the balls (6) located on one side of the couplers (7) takes place in a common carrier (4,5 / 8,9) provided with spherical sections.
CA002500395A 2002-09-27 2003-09-10 Oscillating motor Abandoned CA2500395A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10245457.4 2002-09-27
DE2002145457 DE10245457B3 (en) 2002-09-27 2002-09-27 Pivot motor has pivoted coupling linkages used for conversion of axial reciprocation of piston into rotation of shaft
PCT/DE2003/003064 WO2004031594A1 (en) 2002-09-27 2003-09-10 Oscillating motor

Publications (1)

Publication Number Publication Date
CA2500395A1 true CA2500395A1 (en) 2004-04-15

Family

ID=31502557

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002500395A Abandoned CA2500395A1 (en) 2002-09-27 2003-09-10 Oscillating motor

Country Status (4)

Country Link
AU (1) AU2003277801A1 (en)
CA (1) CA2500395A1 (en)
DE (1) DE10245457B3 (en)
WO (1) WO2004031594A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101684849A (en) * 2008-09-26 2010-03-31 阿斯图里亚汽车系统股份公司 Torsion vibration damper
US20100187787A1 (en) * 2007-06-20 2010-07-29 Asturia Automotive Systems Ag Low-end Adjustment Mechanism for Vehicle Suspensions
CN102047000A (en) * 2008-05-30 2011-05-04 阿斯图里亚汽车系统股份公司 Torsional vibration damper
US7992485B2 (en) 2006-10-23 2011-08-09 Asturia Automotive Systems Ag Apparatus for compensating and/or transmitting forces or torques and rotational movements between two components

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005031414B4 (en) * 2005-07-04 2016-01-21 Bayerische Motoren Werke Aktiengesellschaft swing motor
EP1884402A1 (en) * 2006-07-24 2008-02-06 Kinshofer GmbH Liftiing and pivoting device for tailgate loading platforms or loading ramps
DE202007005569U1 (en) 2007-04-13 2008-08-21 Asturia Automotive Systems Ag stabilizer assembly
DE202007013613U1 (en) 2007-09-27 2009-02-12 Asturia Automotive Systems Ag Pressure medium actuated swing motor
DE102008008017A1 (en) 2008-02-07 2009-08-13 Daimler Ag Controlling unit for coupling two components, particularly two rod sections of stabilizer of chassis of motor vehicle, has housing, where housing has sealing holding units for holding components at opposite sides in each case
DE102020001586B4 (en) 2020-03-11 2022-08-11 Walter Runkel Swivel drive for a swiveling ramp, in particular for the entry and exit aid for wheelchair users

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955578A (en) * 1958-02-18 1960-10-11 Blackhawk Mfg Co Hydraulic ram
US3156161A (en) * 1963-04-10 1964-11-10 Keystone Valve Corp Pressure fluid actuated fractional rotation operator for valves and the like
NL7202940A (en) * 1972-03-06 1973-09-10
US3864983A (en) * 1972-09-15 1975-02-11 Stephen C Jacobsen Rotary-to-linear and linear-to-rotary motion converters
DE2412943A1 (en) * 1974-03-18 1975-10-02 Rheinstahl Ag HYDRAULIC SWIVEL DRIVE, IN PARTICULAR FOR GUNS AND / OR PROTECTED OR. GUIDED ARMS
DE2735731A1 (en) * 1976-08-11 1978-02-16 Worcester Controls Ag DEVICE FOR CONVERTING LINEAR MOTION INTO ROTATING MOTION AND REVERSE
FR2406247A1 (en) * 1977-10-14 1979-05-11 Pont A Mousson Controlling rotation of butterfly valve by fraction of turn - utilises piston in cylinder moved in translation, under fluid pressure and in rotation
JPH07139519A (en) * 1993-11-16 1995-05-30 Fuji Oozx Inc Rotary actuator
DE19754539C2 (en) * 1997-12-09 2001-11-29 Mannesmann Sachs Ag Swing motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7992485B2 (en) 2006-10-23 2011-08-09 Asturia Automotive Systems Ag Apparatus for compensating and/or transmitting forces or torques and rotational movements between two components
US20100187787A1 (en) * 2007-06-20 2010-07-29 Asturia Automotive Systems Ag Low-end Adjustment Mechanism for Vehicle Suspensions
US8272650B2 (en) * 2007-06-20 2012-09-25 Asturia Automotive Systems Ag Low-end adjustment mechanism for vehicle suspensions
CN102047000A (en) * 2008-05-30 2011-05-04 阿斯图里亚汽车系统股份公司 Torsional vibration damper
CN101684849A (en) * 2008-09-26 2010-03-31 阿斯图里亚汽车系统股份公司 Torsion vibration damper
US20100082165A1 (en) * 2008-09-26 2010-04-01 Asturia Automotive Systems Ag Torsional Oscillation Damper
US8303422B2 (en) * 2008-09-26 2012-11-06 Asturia Automotive Systems Ag Torsional oscillation damper
CN101684849B (en) * 2008-09-26 2014-09-24 阿斯图里亚汽车系统股份公司 Torsion vibration damper

Also Published As

Publication number Publication date
DE10245457B3 (en) 2004-03-11
AU2003277801A1 (en) 2004-04-23
WO2004031594A1 (en) 2004-04-15

Similar Documents

Publication Publication Date Title
US6318737B1 (en) Roll control actuator
CA2500395A1 (en) Oscillating motor
US4516959A (en) Sealing boot for universal joint
CA1097935A (en) Telescoping universal joints
KR100363567B1 (en) Brake knee joint for prosthesis
US5921358A (en) Rotation damper in a toggle joint prosthesis
GB2350592A (en) Roll control actuator
US4945745A (en) Telescopic drive spindle assembly
EP1970598B1 (en) Feed screw mechanism
US20090176587A1 (en) Propshaft With Constant Velocity Joint Attachment
GB2289929A (en) Assembly of constant velocity ratio universal joint and shaft
US7992485B2 (en) Apparatus for compensating and/or transmitting forces or torques and rotational movements between two components
EP0202206A1 (en) Robot
KR102212252B1 (en) Impact tool
CA2380024A1 (en) A drive apparatus for a grab device
KR19980018732A (en) Rotary actuator
US4976655A (en) Connecting rod assembly for downhole drilling
CA2063184A1 (en) Tube connection
GB2318771A (en) Roll control actuator
US4342257A (en) Rotary actuator with integral fluid coupling joint
AU1899300A (en) Device for frictional engagement with tubular goods
US4124999A (en) Support assembly for coupling of universal joint
US5207616A (en) Transmission joint, part of a transmission line equipped with such a joint and process for installing a joint
US5727445A (en) Actuator cylinder with mechanism to reduce stiction
US5495782A (en) Power wrench

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued
FZDE Discontinued

Effective date: 20080807