US20020000356A1 - Clutch - Google Patents
Clutch Download PDFInfo
- Publication number
- US20020000356A1 US20020000356A1 US09/845,340 US84534001A US2002000356A1 US 20020000356 A1 US20020000356 A1 US 20020000356A1 US 84534001 A US84534001 A US 84534001A US 2002000356 A1 US2002000356 A1 US 2002000356A1
- Authority
- US
- United States
- Prior art keywords
- clutch
- pressure plate
- actuator device
- spring
- driven shaft
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 7
- 239000007788 liquid Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
Images
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
Definitions
- the invention relates to a clutch for use in a transmission line of a vehicle, comprising a first and a second main part which extend coaxially in relation to each other and are rotatable about a common longitudinal axis, and which are non-rotationally connected to a drive shaft and a driven shaft respectively, wherein the first main part has a first and a second portion which are arranged at a distance apart in the axial direction, and a pressure plate and at least one pressure spring which are mounted between the first and the second portion, and the second main part has a clutch disc, the pressure plate and the clutch disc being axially movably connected to the drive shaft and the driven shaft respectively, and the pressure spring is mounted between the second portion and the pressure plate, attempting to bring the latter into frictional engagement against the clutch disc and simultaneously the clutch disc into frictional engagement against the first portion, and the clutch further comprises an actuator device which is arranged for engagement with the pressure spring, hereby reducing the spring force exerted by the pressure spring against the pressure plate in order to reduce the friction
- the spring is a diaphragm spring or membrane spring which extends from the second portion to near the driven shaft.
- the actuator may be a hydraulic cylinder device which is provided inside a clutch housing, having a cylinder and a cylindrical piston disposed therein, through which the driven shaft can extend axially.
- On the piston there may be mounted a release bearing through which the driven shaft similarly extends, and via which the piston is connected to the radially inner portion of the diaphragm spring.
- the actuator may be disposed outside the clutch housing and be connected to a release bearing via a mechanism.
- the portion of the diaphragm spring which influences the pressure plate is normally located at the periphery of the pressure plate, and a radially inner portion of the diaphragm spring is influenced by the actuator, together with the fact that the intermediate portion of the diaphragm spring is elastically flexible, especially if this intermediate portion comprises radially extending fingers, the piston has to travel a great distance in order to release the clutch.
- the clutch's axial length will thereby also be great and the clutch will be heavy and voluminous.
- An object of the invention is to provide a clutch which is not encumbered with the above-mentioned disadvantages.
- a friction clutch having a first main part, a second main part, a pressure plate being constituted by a first friction plate, a pressurre spring, clutch discs on the second main part and an actuator device engaging the pressure spring to reduce the spring force exerted by the spring.
- the actuator device is comprised in the first main part and has an axially movable body which is arranged between the pressure spring and the pressure plate and via which the spring force is transferred to the pressure plate when the actiator device is not in operation.
- This clutch comprises an opening in a stationary outer housing, which may be connected to a fluid supply.
- the clutch according to the invention differs from this known device in that it comprises a swivel being arranged between the actuator and the driven shaft. By this arrangement the outer diameter of the clutch can be kept to a minimum.
- the swivel is for transferring a pressure fluid or an electric current to the actuator which may be a hydraulic or electric actuator.
- FIG. 1 illustrates a schematic longitudinal section through a clutch according to the invention, only a portion on one side of a longitudinal axis of the clutch being shown.
- the directional indications “up” and “left” should be understood to refer to the directions towards the edge of the drawing facing away from the reader and the left edge respectively.
- a flywheel 1 which is connected to a drive shaft 2 of an engine (not shown), is provided in a first housing part 3 which is attached to the engine.
- the first housing part 3 may be releasably connected to a second housing part 4 by means of screws (not shown), the housing parts 3 , 4 abutting against each other at a location 5 .
- a cylindrical intermediate piece 6 whose one end portion is securely connected to the flywheel 1 , extends coaxially with and away from the flywheel.
- a second end portion of the intermediate piece 6 is securely connected to a clutch cover 7 which extends radially inwardly from the intermediate piece 6 .
- annular pressure plate 8 which is fixed with regard to rotation, but provided axially movably relative to the intermediate piece 6 , which may comprise lugs (not shown) in a known per se manner, extending radially inwardly and on which are mounted axially extending pins (not shown) which are passed into holes in the pressure plate 8 , thus enabling it to slide on the pins.
- a circular clutch disc 9 which has friction discs or linings 10 , 11 on each side. At its radially inner edge the clutch disc 9 is connected to a boss or hub 12 with internal or splines grooves 13 which are engaged with external grooves or splines 14 of a driven shaft 15 .
- the clutch disc 9 is thus fixed with regard to rotation, but axially movably connected to the driven shaft 15 .
- the driven shaft 15 is rotatably mounted in the drive shaft 2 via a bearing 16 .
- a radially outer edge portion 20 of a cup spring 21 rests against the side of the clutch cover's radially inner edge 17 which faces the flywheel 1 .
- the cup spring 21 has a radially inner edge portion 22 .
- an actuator supporting portion 23 Radially inwardly from the intermediate piece 6 there protrudes an actuator supporting portion 23 which may be approximately disc-shaped. At regular intervals along a circle which is coaxial relative to the shafts' longitudinal axis, in thickened portions of the actuator supporting portion 23 and between the cup spring and the pressure plate there are provided through-going, axial bores 24 with a first bore portion 25 and a second bore portion 26 with a diameter, which is smaller than the diameter of the first bore portion 25 .
- each bore 24 there is provided a piston 27 , a central portion 28 with a large diameter of the piston 27 being sealingly and slidably arranged in the first bore portion 25 .
- Each of the thickened portions thus forms a housing or a cylinder for the piston 27 .
- a rod portion 29 protrudes sealingly through the second bore portion 26 towards the pressure plate 8 .
- a rod portion 30 protrudes towards the cup spring 21 .
- suitable gaskets are provided in order to provide a seal between the piston's central portion 28 and the bore portion 25 and between the left rod portion 29 and the bore portion 26 suitable gaskets are provided.
- an inlet channel 32 extends radially inwardly in the actuator supporting portion 23 .
- the actuator supporting portion 23 is terminated by a cylindrical hub portion 34 where the inlet channel 32 has a radially inwardly open outlet 33 .
- a bearing 35 , 36 In each end portion of the hub portion 34 there is inserted a bearing 35 , 36 , into which there is inserted and mounted in turn a supply cylinder or casing 37 .
- a channel one of whose end portions is in the form of a radially outwardly open ring groove 38 , which sealingly communicates with all the outlets 33 of the inlet channels 32 , and whose second end portion is provided with a pipe connection 39 .
- a guide piece 40 Near the pipe connection 39 there is attached to the second housing part 4 a guide piece 40 which has an axially extending groove 41 whose sides support the pipe connection in the circumferential direction relative to the shafts' longitudinal axis.
- a pipe or hose 42 extends radially outwardly through an opening 43 which is defined by facing U-shaped recesses in the housing parts 3 , 4 , at the location where they abut against each other.
- the hose can thereby be removed from the housing parts without being passed through a hole in one of them.
- the hose 42 is connected to a master cylinder which can be worked by an operator via a clutch pedal, whereby it should be understood that the cylinder, the jacks 24 , 27 , the inlet channels 32 , the supply cylinder 37 and the hose 42 together form an actuator device 44 for operation of the clutch by means of a pressure fluid.
- the flywheel 1 , the intermediate piece 6 , the clutch cover 7 , the spring 21 , the pressure plate 8 and the actuator device 44 form a first main part 45 of the clutch.
- the clutch disc 9 and the boss 12 form a second main part of the clutch.
- the pistons' stroke can be short since the spring force is transferred to the pressure plate 8 directly via the pistons.
- the clutch may be short and require very little space.
- the second housing part 4 If the second housing part 4 has to be removed from the first housing part 3 , the second housing part 4 is first released from the first housing part 3 and then pulled to the right.
- the hose 42 hereby provides the necessary ability for the second housing part 4 to move relative to the first housing part 3 , while at the same time the pipe connection 39 can be moved out of the groove 41 in the guide piece 40 . The hose 42 may then be released from the pipe connection 39 .
- an electrical actuator device may be provided with a row of electrical jacks instead of the hydraulic jacks 24 , 27 .
- the stator of each electrical jack then forms a housing for the jack's movable component.
- electrical cables may then be provided, and instead of the hub portion 34 , the bearings 35 , 36 and the supply cylinder 37 which forms a fluid swivel, electrical slip rings and brushes may be provided.
- cup spring 21 instead of the single cup spring 21 , a number of cup springs may be provided which are stacked on top of one another, i.e. arranged in a row, thereby providing a greater spring movement.
- thick friction facings of the clutch disc 9 can withstand a great amount of wear before the spring force declines significantly.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
- The invention relates to a clutch for use in a transmission line of a vehicle, comprising a first and a second main part which extend coaxially in relation to each other and are rotatable about a common longitudinal axis, and which are non-rotationally connected to a drive shaft and a driven shaft respectively, wherein the first main part has a first and a second portion which are arranged at a distance apart in the axial direction, and a pressure plate and at least one pressure spring which are mounted between the first and the second portion, and the second main part has a clutch disc, the pressure plate and the clutch disc being axially movably connected to the drive shaft and the driven shaft respectively, and the pressure spring is mounted between the second portion and the pressure plate, attempting to bring the latter into frictional engagement against the clutch disc and simultaneously the clutch disc into frictional engagement against the first portion, and the clutch further comprises an actuator device which is arranged for engagement with the pressure spring, hereby reducing the spring force exerted by the pressure spring against the pressure plate in order to reduce the frictional engagements, where the actuator device is comprised in the first main part and has an axially movable body which is arranged between the pressure spring and the pressure plate, and via which the spring force is transferred to the pressure plate when the actuator device is not in operation.
- From the prior art clutches are known in which the spring is a diaphragm spring or membrane spring which extends from the second portion to near the driven shaft. The actuator may be a hydraulic cylinder device which is provided inside a clutch housing, having a cylinder and a cylindrical piston disposed therein, through which the driven shaft can extend axially. On the piston there may be mounted a release bearing through which the driven shaft similarly extends, and via which the piston is connected to the radially inner portion of the diaphragm spring.
- Alternatively, the actuator may be disposed outside the clutch housing and be connected to a release bearing via a mechanism.
- Even though the drive shaft and the driven shaft nominally should extend coaxially, in practice this is only achieved within certain production tolerances. When the engine is running, therefore, a relative movement is obtained of the rotating components of the clutch's main parts, which is undesirable as it can lead to vibration of the clutch, and this vibration can be transmitted to the vehicle in which the clutch is mounted. It may moreover result in excess wear on the clutch's components.
- Since the portion of the diaphragm spring which influences the pressure plate is normally located at the periphery of the pressure plate, and a radially inner portion of the diaphragm spring is influenced by the actuator, together with the fact that the intermediate portion of the diaphragm spring is elastically flexible, especially if this intermediate portion comprises radially extending fingers, the piston has to travel a great distance in order to release the clutch. The clutch's axial length will thereby also be great and the clutch will be heavy and voluminous.
- An object of the invention is to provide a clutch which is not encumbered with the above-mentioned disadvantages.
- In DE-A-34 25 346 it is disclosed a friction clutch having a first main part, a second main part, a pressure plate being constituted by a first friction plate, a pressurre spring, clutch discs on the second main part and an actuator device engaging the pressure spring to reduce the spring force exerted by the spring. The actuator device is comprised in the first main part and has an axially movable body which is arranged between the pressure spring and the pressure plate and via which the spring force is transferred to the pressure plate when the actiator device is not in operation. This clutch comprises an opening in a stationary outer housing, which may be connected to a fluid supply.
- The clutch according to the invention differs from this known device in that it comprises a swivel being arranged between the actuator and the driven shaft. By this arrangement the outer diameter of the clutch can be kept to a minimum. The swivel is for transferring a pressure fluid or an electric current to the actuator which may be a hydraulic or electric actuator.
- The characteristics of the clutch according to the invention are set forth in the characterising features indicated in the claims.
- The invention will now be described in more detail with reference to the drawing, whose only FIGURE illustrates a schematic longitudinal section through a clutch according to the invention, only a portion on one side of a longitudinal axis of the clutch being shown. The directional indications “up” and “left” should be understood to refer to the directions towards the edge of the drawing facing away from the reader and the left edge respectively.
- A
flywheel 1 which is connected to a drive shaft 2 of an engine (not shown), is provided in afirst housing part 3 which is attached to the engine. Thefirst housing part 3 may be releasably connected to asecond housing part 4 by means of screws (not shown), thehousing parts - A cylindrical
intermediate piece 6, whose one end portion is securely connected to theflywheel 1, extends coaxially with and away from the flywheel. A second end portion of theintermediate piece 6 is securely connected to a clutch cover 7 which extends radially inwardly from theintermediate piece 6. - Between the
flywheel 1 and the clutch cover 7 there is provided anannular pressure plate 8 which is fixed with regard to rotation, but provided axially movably relative to theintermediate piece 6, which may comprise lugs (not shown) in a known per se manner, extending radially inwardly and on which are mounted axially extending pins (not shown) which are passed into holes in thepressure plate 8, thus enabling it to slide on the pins. - Between the
pressure plate 8 and theflywheel 1 there is provided acircular clutch disc 9 which has friction discs orlinings clutch disc 9 is connected to a boss orhub 12 with internal orsplines grooves 13 which are engaged with external grooves orsplines 14 of a drivenshaft 15. Theclutch disc 9 is thus fixed with regard to rotation, but axially movably connected to the drivenshaft 15. The drivenshaft 15 is rotatably mounted in the drive shaft 2 via abearing 16. - A radially
outer edge portion 20 of acup spring 21 rests against the side of the clutch cover's radiallyinner edge 17 which faces theflywheel 1. Thecup spring 21 has a radiallyinner edge portion 22. - Radially inwardly from the
intermediate piece 6 there protrudes anactuator supporting portion 23 which may be approximately disc-shaped. At regular intervals along a circle which is coaxial relative to the shafts' longitudinal axis, in thickened portions of theactuator supporting portion 23 and between the cup spring and the pressure plate there are provided through-going, axial bores 24 with a first bore portion 25 and asecond bore portion 26 with a diameter, which is smaller than the diameter of the first bore portion 25. - In each bore24 there is provided a
piston 27, acentral portion 28 with a large diameter of thepiston 27 being sealingly and slidably arranged in the first bore portion 25. Each of the thickened portions thus forms a housing or a cylinder for thepiston 27. From the left side of the piston 27 a rod portion 29 protrudes sealingly through thesecond bore portion 26 towards thepressure plate 8. From the second side of the piston 27 arod portion 30 protrudes towards thecup spring 21. In order to provide a seal between the piston'scentral portion 28 and the bore portion 25 and between the left rod portion 29 and thebore portion 26 suitable gaskets are provided. - The side of the
piston 27 which faces the pressure plate and the opposite cylinder wall defines acylinder space 31. When a pressure fluid is supplied to thecylinder space 31, thepiston 27 can be moved to the right. Each bore 24 withpiston 27 thereby forms a linear jack. - From each
cylinder space 31 aninlet channel 32 extends radially inwardly in theactuator supporting portion 23. Near the drivenshaft 15 theactuator supporting portion 23 is terminated by a cylindrical hub portion 34 where theinlet channel 32 has a radially inwardly open outlet 33. In each end portion of the hub portion 34 there is inserted abearing casing 37. In thesupply cylinder 37 there is provided a channel one of whose end portions is in the form of a radially outwardlyopen ring groove 38, which sealingly communicates with all the outlets 33 of theinlet channels 32, and whose second end portion is provided with apipe connection 39. Near thepipe connection 39 there is attached to the second housing part 4 aguide piece 40 which has an axially extendinggroove 41 whose sides support the pipe connection in the circumferential direction relative to the shafts' longitudinal axis. - From the pipe connection39 a pipe or
hose 42 extends radially outwardly through anopening 43 which is defined by facing U-shaped recesses in thehousing parts hose 42 is connected to a master cylinder which can be worked by an operator via a clutch pedal, whereby it should be understood that the cylinder, thejacks 24, 27, theinlet channels 32, thesupply cylinder 37 and thehose 42 together form anactuator device 44 for operation of the clutch by means of a pressure fluid. - The
flywheel 1, theintermediate piece 6, the clutch cover 7, thespring 21, thepressure plate 8 and theactuator device 44 form a firstmain part 45 of the clutch. - The
clutch disc 9 and theboss 12 form a second main part of the clutch. - During rotation of the flywheel2 the
guide piece 40 ensures that thesupply cylinder 37 remains stationary. - The clutch according to the invention works as follows.
- When the clutch pedal is not being operated, the pressure of the hydraulic liquid in the
cylinder 31, theinlet channel 32, thesupply cylinder 37 and thehose 42 is low. In this case the force which is exerted by thecup spring 22 can be transferred to thepressure plate 8 via thepiston 27, thus causing theclutch disc 9 to be forced against theflywheel 1. Theclutch disc 9 is thereby securely held between the flywheel 2 and thepressure plate 8, thus permitting torque to be transferred from the drive shaft 2 to the drivenshaft 15. - When the clutch pedal is operated, the pressure of the hydraulic liquid increases. A force is thereby exerted against the left side of each
piston 27, which force attempts to move thepiston 27 to the right. The righthand rod portion 30 then exerts a force against the radiallyinner edge portion 22 of thecup spring 21, moving it towards the right until the left hand rod portion 29 of the piston no longer abuts against thepressure plate 8. Theclutch disc 9 is then no longer clamped and no torque is transferred from the drive shaft 2 to the drivenshaft 15. - By means of the clutch according to the invention the pistons' stroke can be short since the spring force is transferred to the
pressure plate 8 directly via the pistons. Thus the clutch may be short and require very little space. - When separating a gearbox from the clutch, the gearbox is released from the engine, whereupon the driven
shaft 15 can be withdrawn from thebearing 16 and theboss 12. No components of the clutch need to be disconnected, including components of theactuator device 44, since it is connected to the first main part. This is a substantial simplification in comparison with the prior art. There is therefore no risk of components becoming wedged and thus complicating a dismantling operation. - If the
second housing part 4 has to be removed from thefirst housing part 3, thesecond housing part 4 is first released from thefirst housing part 3 and then pulled to the right. Thehose 42 hereby provides the necessary ability for thesecond housing part 4 to move relative to thefirst housing part 3, while at the same time thepipe connection 39 can be moved out of thegroove 41 in theguide piece 40. Thehose 42 may then be released from thepipe connection 39. - It will be understood that instead of the illustrated
hydraulic actuator device 44, an electrical actuator device may be provided with a row of electrical jacks instead of thehydraulic jacks 24, 27. The stator of each electrical jack then forms a housing for the jack's movable component. Instead of hydraulic lines and channels, electrical cables may then be provided, and instead of the hub portion 34, thebearings supply cylinder 37 which forms a fluid swivel, electrical slip rings and brushes may be provided. - It will further be understood that instead of the
single cup spring 21, a number of cup springs may be provided which are stacked on top of one another, i.e. arranged in a row, thereby providing a greater spring movement. Thus new, thick friction facings of theclutch disc 9 can withstand a great amount of wear before the spring force declines significantly.
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO19985107A NO310252B1 (en) | 1998-11-02 | 1998-11-02 | clutch |
NO19985107 | 1998-11-02 | ||
PCT/NO1999/000329 WO2000026555A1 (en) | 1998-11-02 | 1999-10-29 | Clutch |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1999/000329 Continuation WO2000026555A1 (en) | 1998-11-02 | 1999-10-29 | Clutch |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020000356A1 true US20020000356A1 (en) | 2002-01-03 |
US6443287B2 US6443287B2 (en) | 2002-09-03 |
Family
ID=19902577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/845,340 Expired - Lifetime US6443287B2 (en) | 1998-11-02 | 2001-05-01 | Clutch |
Country Status (4)
Country | Link |
---|---|
US (1) | US6443287B2 (en) |
DE (1) | DE19983698T1 (en) |
NO (1) | NO310252B1 (en) |
WO (1) | WO2000026555A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10360971A1 (en) * | 2003-10-21 | 2005-06-02 | Hyundai Motor Company | Throttle valve of a clutch release cylinder |
US20130196811A1 (en) * | 2012-01-26 | 2013-08-01 | Shanghai Jiao Tong University | Torque transmitting system |
US20160097429A1 (en) * | 2014-10-06 | 2016-04-07 | Caterpillar Inc. | Disconnect Clutch |
US10344809B2 (en) * | 2014-06-17 | 2019-07-09 | Volvo Truck Corporation | Clutch control |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10102300A1 (en) * | 2001-01-19 | 2002-07-25 | Zahnradfabrik Friedrichshafen | Control for friction coupling comprises coupling disc, spring arrangement, non-rotary part of control element, sleeve, seals and rotary control. |
WO2005043671A1 (en) * | 2003-10-28 | 2005-05-12 | Stephen Kaneff | Apparatus for rotation of a large body about an axis |
DE102006036012B4 (en) * | 2006-08-02 | 2019-02-28 | Zf Friedrichshafen Ag | Coupling device, in particular motor vehicle coupling device |
GB2468909B (en) * | 2009-03-27 | 2012-06-20 | Dyson Technology Ltd | Clutch assembly |
US9651138B2 (en) | 2011-09-30 | 2017-05-16 | Mtd Products Inc. | Speed control assembly for a self-propelled walk-behind lawn mower |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3180469A (en) * | 1960-12-14 | 1965-04-27 | Zahnradfabrik Friedrichshafen | Spring-pressed clutch with electromagnetic release |
US3224540A (en) * | 1961-03-07 | 1965-12-21 | Zahnradfabrik Friedrichshafen | Electromagnetically operated multiple disc clutch or brake |
DE2164542C3 (en) * | 1971-12-24 | 1980-04-17 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Automatic adjustment device to compensate for the abrasion of the friction disc of an electromagnetically releasable spring pressure brake or clutch |
US3999634A (en) * | 1974-01-14 | 1976-12-28 | Howell Industries, Inc. | Pneumatic actuation for disc brake assemblies |
US4082156A (en) * | 1976-07-01 | 1978-04-04 | Caterpillar Tractor Co. | Drive mechanism having separable housing |
US4134478A (en) * | 1977-07-18 | 1979-01-16 | Caterpillar Tractor Co. | Brake apparatus including plural actuating assemblies |
JPS5540315A (en) * | 1978-09-12 | 1980-03-21 | Ishikawajima Harima Heavy Ind Co Ltd | Friction clutch |
US4428471A (en) * | 1982-03-26 | 1984-01-31 | General Motors Corporation | Clutch operator with a hydraulic actuator |
SE457375B (en) * | 1983-07-14 | 1988-12-19 | Daikin Mfg Co Ltd | A PNEUMATIC CLUTCH OIL SUPPLY |
GB2147668B (en) | 1983-10-08 | 1986-07-23 | Automotive Products Plc | A clutch actuator |
DE3425346C2 (en) * | 1984-07-10 | 1986-12-18 | Maschinenfabrik Stromag Gmbh, 4750 Unna | Friction clutch or brake |
JPS61130627A (en) * | 1984-11-29 | 1986-06-18 | Hino Motors Ltd | Hydraulic clutch |
US4645039A (en) * | 1985-06-20 | 1987-02-24 | Wiseda Ltd. | Parking brake for off-highway vehicles |
FR2674302B1 (en) | 1991-03-22 | 1995-06-02 | Valeo | HYDRAULIC ACTUATOR FOR FRICTION CLUTCH. |
DE4119874A1 (en) * | 1991-06-17 | 1993-01-07 | Deere & Co | MULTI-DISC CLUTCH |
JPH05164143A (en) * | 1991-12-12 | 1993-06-29 | Hino Motors Ltd | Hydraulic clutch |
DE4237075C1 (en) * | 1992-11-03 | 1994-06-23 | Deere & Co | Fluid-operated friction disc clutch |
DE19539968C2 (en) * | 1995-10-27 | 2003-07-10 | Deere & Co | Valve, valve body and friction disc clutch |
DE19604159C2 (en) | 1996-02-06 | 1998-04-09 | Freudenberg Carl Fa | Clutch actuator |
-
1998
- 1998-11-02 NO NO19985107A patent/NO310252B1/en not_active IP Right Cessation
-
1999
- 1999-10-29 DE DE19983698T patent/DE19983698T1/en not_active Withdrawn
- 1999-10-29 WO PCT/NO1999/000329 patent/WO2000026555A1/en active Application Filing
-
2001
- 2001-05-01 US US09/845,340 patent/US6443287B2/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10360971A1 (en) * | 2003-10-21 | 2005-06-02 | Hyundai Motor Company | Throttle valve of a clutch release cylinder |
DE10360971B4 (en) * | 2003-10-21 | 2006-01-19 | Hyundai Motor Company | Clutch release cylinder with a throttle valve |
US20130196811A1 (en) * | 2012-01-26 | 2013-08-01 | Shanghai Jiao Tong University | Torque transmitting system |
US8708854B2 (en) * | 2012-01-26 | 2014-04-29 | GM Global Technology Operations LLC | Torque transmitting system |
US10344809B2 (en) * | 2014-06-17 | 2019-07-09 | Volvo Truck Corporation | Clutch control |
US20160097429A1 (en) * | 2014-10-06 | 2016-04-07 | Caterpillar Inc. | Disconnect Clutch |
US9593723B2 (en) * | 2014-10-06 | 2017-03-14 | Caterpillar Inc. | Disconnect clutch |
Also Published As
Publication number | Publication date |
---|---|
US6443287B2 (en) | 2002-09-03 |
NO985107L (en) | 2000-05-03 |
DE19983698T1 (en) | 2001-10-04 |
NO985107D0 (en) | 1998-11-02 |
NO310252B1 (en) | 2001-06-11 |
WO2000026555A1 (en) | 2000-05-11 |
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