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| Number | Title | Issue Date |
| 5123513 | Remote-activated, power shift clutch assembly with positive locking A clutch assembly for automotive vehicle four-wheel drives either in association with an axle disconnect or wheel hub incorporates a power shift mechanism which can be remotely activated either when the vehicle is static, in motion and during either forwa... | 06/23/1992 |
| 5020419 | Three position fluid-controlled actuator A three-position hydraulic actuator comprising an outer body defining a cylindrical inner cavity; a dual-rod piston sliding inside the cavity; a pair of stop rings mounted in respective central annular seats in the lateral wall of the cavity and on the pi... | 06/04/1991 |
| 4889217 | Motor vehicle clutch for a mechanical, multiple-speed automatic transmission A motor vehicle clutch is particularly suited for a mechanical multiple-speed automatic transmission. The clutch comprises a pair of alternatingly engageable clutch discs (5,7) mounted on a pair of concentric shafts (8,10). In addition to a centrifugal ar... | 12/26/1989 |
| 4856628 | Automated mechanical transmission system for use in commercial vehicles An automated mechanical transmission system for use in commercial vehicles comprises an oil spray type oil hydraulic clutch, a mechanical transmission having a shift cylinder, a shift valve, a select cylinder, and a select valve, a hydraulic system contro... | 08/15/1989 |
| 4787494 | Hydraulic operating unit of friction engaging apparatus for transmissions A hydraulic operating unit for the friction engaging apparatus of a transmission provides a hydraulic operating unit which permits the introduction of a low-pressure working fluid to permit the forceable disengagement of the hydraulic operation unit to wo... | 11/29/1988 |
| 4766986 | Rotational control apparatus A rotational control apparatus is shown in its most preferred form as a clutch-brake including an improved housing having a cylindrical body portion and first and second housing ends removably secured thereto. The body portion includes an axially extendin... | 08/30/1988 |
| 4750595 | Rotational control apparatus A rotational control apparatus is shown in its most preferred form as a clutch-brake including an improved housing having a cylindrical body portion and first and second circular shaped ends removably secured thereto. The body portion includes an axially ... | 06/14/1988 |
| 4745998 | Disengageable friction coupling for releasably joining an element about a shaft A disengageable friction coupling is comprised of a hollow shaft having a tapered inner surface. An element defining an internal opening is mounted over the hollow shaft, the hollow shaft having a tapered inner surface in the region of said element. A plu... | 05/24/1988 |
| 4739865 | Clutch/brake unit with self-contained actuating pump system A housing encloses a supply of oil and has opposite end portions supporting axially aligned input and output shafts. Interfitting annular clutch plates and discs provide for connecting the input shaft to the output shaft, and interfitting annular brake pl... | 04/26/1988 |
| 4697680 | Fluid operated disconnect coupling Positive retention of a power train coupling in either a coupled or decoupled position is achieved in a structure including first and second power train elements 12 and 14 mounted for movement relative to each other between a coupled power transmitting po... | 10/06/1987 |
| 4648493 | Rotational control apparatus A rotational control apparatus is shown in its most preferred form according to the teachings of the present invention as a combination clutch/brake. The clutch/brake includes an interfacing member formed by first and second pressure plates rotatably moun... | 03/10/1987 |
| 4611506 | Hydraulically actuated planetary wheel drive A drive mechanism located within a vehicle wheel at the outer end of a drive axle. The mechanism is operated by the operator of the vehicle by remote control from his normal operating position. The mechanism may be connected for the usual gear reduction d... | 09/16/1986 |
| 4562911 | Quick-coupling device A drive shaft (1) rotatably journalled in a stationary block (2) has keyed thereto a driving member (5), while a driven member (6) is rotatably mounted on the shaft. The driving member imparts to the shaft a positive intermittent rotation, for example by ... | 01/07/1986 |
| 4562902 | Brake system A brake system for an off-highway vehicle which includes a fluid pressure actuated multi-disc brake and a fluid pressure control system. Engagement of the multi-disc brake is effected by a fluid operated piston having multiple effective pressure areas. Fl... | 01/07/1986 |
| 4527681 | Variable speed drive unit with graduated increasing and decreasing speed profile A variable speed drive unit having a clutch disc stack including input and output shafts, a first series of drive plates located in a fluid reservoir and supported for rotation by a rotatable housing of the unit rotated by one of said shafts, a second ser... | 07/09/1985 |
| 4509627 | Hydraulic centrifugal clutch A hydraulic centrifugal clutch comprises an input shaft; an output shaft; a hydraulic servomechanism including a fixed cylinder fixed to said input shaft, an axially movable piston mounted on said input shaft and forming a first cylindrical chamber in com... | 04/09/1985 |
| 4485903 | Centrifugal actuated friction clutch with a hydraulic apply piston A friction clutch has an apply piston slidably disposed in a clutch housing and cooperating therewith to form an apply chamber and a feed chamber. The effective area of the apply chamber is greater than the effective area of the feed chamber. Pressurized ... | 12/04/1984 |
| 4445393 | Fluid actuated shift bar housing assembly A fluid actuated shift bar housing assembly for a change gear transmission wherein the shift bars are biased to an axially centered neutral position by constant fluid pressure in a constantly pressurized chamber and are selectively axially moved to an axi... | 05/01/1984 |
| 4433767 | Power transmission mechanism A drive shaft (30), adapted to be connected to the power takeoff shaft (14) of a tractor, comprises a longitudinally extensible shaft (33) including a tapered head (34) that is movable into and out of meshing engagement with a correspondingly shaped socke... | 02/28/1984 |
| 4411346 | Disc clutch apparatus A disc clutch arrangement is disclosed within a gear drive. One of the clutch halves is formed on the end of a quill shaft which mounts a driven gear and a hydraulic cylinder. A piston operating within the cylinder is connected to a rod extending through ... | 10/25/1983 |
| 4396101 | Interleaved friction plate clutch having means to prevent plate wobble A multiple, interleaved friction plate clutch has a clutch pack including a plurality of externally toothed clutch plates and a plurality of internally toothed clutch plates which are interleaved with said externally toothed clutch plates. Hydraulically a... | 08/02/1983 |
| 4372434 | Interleaved friction plate clutch having means to prevent plate wobble A multiple, interleaved friction plate clutch in which the clutch plates have a fluid seal between them to permit fluid pressure to be built up in the space between the plates when they are in the clutch released, separated position, the plate sets are co... | 02/08/1983 |
| 4304313 | Tractor An agricultural type tractor with lifting devices on the front, rear and both sides for agricultural implements. Each pair of rear drivable wheels which are in tandem pivot about a common axle and each pivotable pair of such wheels is driven by a separate... | 12/08/1981 |
| 4257509 | Hydraulic clutch with dual pistons Two cooperatively arranged pistons and a spring interposed therebetween are arranged within the clutch, one of the pistons is formed as a simple and compact annular plate with flat parallel surfaces and the other formed with an annular recess for receivin... | 03/24/1981 |
| 4223774 | Clutch unit A clutch unit especially adapted for accurately controlling the transmission of high rotary forces with minimum residual drag. A servo control valve supplied with hydraulic fluid by a pump controls a first stage fluid amplifier supplied by a separate pump... | 09/23/1980 |
| 4154325 | Wet type clutch for torque convertors An annular disc spring interposed between inner and outer pistons and located in the inner piston, in a direction parallel with a clutch disk, in series with a wall surface through which the inner and outer pistons are in slidably fitted relationship to e... | 05/15/1979 |
| 4109771 | Safety lockout for engine clutch Pneumatic actuation of an over-center clutch by a main control valve and fluid motor in the direction to engage the clutch is prevented by one or more safety lockout control valves each diverting the pneumatic pressure fluid from the main control valve to... | 08/29/1978 |
| 4108289 | Hydraulic coupling with a lock-up clutch A hydraulic transmission with a lock-up clutch comprising a housing which encloses a fluid transmission device like a torque converter and a mechanical lock-up clutch. The clutch includes a flexible disc which divides the chamber space confined by said ho... | 08/22/1978 |
| 4090597 | Fluid and torque operated friction clutch A friction clutch for gas-turbine engine transmission gear has a casing which accommodates friction plates arranged between the back plate and pressure plate and an axially movable piston elastically coupled to the casing for pressing the friction plates ... | 05/23/1978 |
| 4062431 | Power transmission with modulating torque converter input clutch A power transmission mechanism includes a hydrokinetic torque converter driven by a hydraulically actuated modulating friction clutch having a piston disposed in and sealingly engaged with the converter housing to form opposed fluid chambers. Fluid in the... | 12/13/1977 |
| 4055240 | Fluid operated toothed clutch with dashpot A toothed clutch of the type having a hydraulic dashpot to which liquid is fed to cushion the final phase of clutch engagement and to establish a holding pressure for resisting disengagement of the clutch. In accordance with the invention, means are provided f... | 10/25/1977 |
| 4024936 | Combination vehicle service and parking brake A vehicle service and parking brake of the multiple oil disc configuration is included in the transmission housing of the vehicle. A plurality of interleaved braking discs arranged circumferentially about the output shaft of the transmission with one disc... | 05/24/1977 |
| 4020933 | Fluid operated clutch with dual pistons A fluid pressure actuated friction clutch assembly includes rotatable driving and driven members adapted to be coupled frictionally together by a clutch pack as the pack is compressed by two pistons movable between advanced and retracted positions relativ... | 05/03/1977 |
| 3973658 | Clutch control means for a pneumatic needle positioner A machine comprising a rotary drive shaft and a pneumatically operated clutch: a plurality of pressure chambers to which air is supplied for controlling said clutch; means for varying the air pressure in one of said chambers corresponding to the speed of ... | 08/10/1976 |
| 3946840 | Flywheel clutch assembly with brake A clutch assembly is located in the bore of a flywheel for drivingly connecting a coaxially located shaft. The assembly is comprised of a first series of discs mounted for rotation with the shaft, and a second series of interleaved plates supported for ro... | 03/30/1976 |
