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| Number | Title | Issue Date |
| 7360977 | Machine tool gear mechanism A machine tool transmission, in particular a spindle transmission, with which the force and/or the torque transfer from an output shaft (3) of a transmission (1) takes place directly on a spindle (15). The spindle (15) is placed co-axiall... | 04/22/2008 |
| 7213488 | Three way swivel divider gearbox for agricultural drive systems A swivel gearbox system having multiple drivetrain outputs is disclosed. The system comprises a swivel gearbox and an angled divider gearbox where the power input and divided power output shafts are not in the same plane. The swivel gearbox is a right angle gearbox ... | 05/08/2007 |
| 7121973 | Methods and apparatus for minimizing backlash in a planetary gear mechanism A planetary gear system includes a planetary gear assembly having a first planetary gear, a second planetary gear rotatable relative to the first planetary gear, and a torquing mechanism. The torquing mechanism generates a torsional spring force of the planetary gea... | 10/17/2006 |
| 7070032 | Hydrodynamic coupling apparatus A hydrodynamic coupling apparatus (10) for transmitting torque between driving and driven elements includes an input shaft (14), a first end (16) of which is rotatably supported in a case (12) and a second end (18) of which is conn... | 07/04/2006 |
| 7048658 | Device for converting a rotational movement into an axial movement A device for converting a rotational movement into an axial movement includes driven planetary rollers (10) and a sliding body (5) that can be axially displaced by means of the planetary rollers (10). The planetary rollers (10) are fixed ... | 05/23/2006 |
| 6910699 | Magnetorheological fluid brake and force-feedback system for a steering mechanism A magnetorheological fluid brake utilizing a positive displacement fluid pump adapted to pump a magnetorheological fluid through a viscosity regulator. The viscosity regulator is adapted to controllably vary the viscosity of the magnetorheological fluid, altering th... | 06/28/2005 |
| 6581742 | Fluid clutch A fluid clutch disposed between a first shaft and a second shaft which are arranged on the same axis, includes a casing drive-coupled to the first shaft, a gear pump disposed in the casing and drive-coupled to the second shaft an intake passage formed in ... | 06/24/2003 |
| 6505722 | Hydraulic differential The present invention relates to axle and intermediate differential mechanisms applicable in vehicles. The inventive differential distributes the torque to the driven shafts automatically and in proportion to the loadings without mounting of any additiona... | 01/14/2003 |
| 6189668 | Rotational output control system A gear pump mechanism shown in a variety of applications to control rotational output. Control of the output from the gear pump and feed to the gear pump of hydraulic fluid or oil can be controlled to establish conditions from free wheeling to fully locke... | 02/20/2001 |
| 6000513 | Rotational output control system A gear pump mechanism shown in a variety of applications to control rotational output. Control of the output from the gear pump and feed to the gear pump of hydraulic fluid or oil can be controlled to establish conditions from free wheeling to fully locke... | 12/14/1999 |
| 5704459 | Positive displacement coupling device Volumetric coupling (38) having multiple hydraulic pumps, controlled by a ring (40) which links the discharge side directly to the suction side for each pump when the coupling is uncoupled, and seals the discharge side when the coupling is coupled.... | 01/06/1998 |
| 5624015 | Infinitely variable positive gear ratio transmission A high efficiency transmission having infinitely variable positive gear ratios in forward and reverse directions is disclosed. The preferred embodiment of the transmission comprises a driven housing, an output shaft, a control shaft, a plurality of intern... | 04/29/1997 |
| 5575368 | Fluid clutch A fluid clutch comprising a driving section, a rotational shaft rotated by the driving section, a driving disk driven rotationally by the rotational shaft, a casing containing the disk and rotatable around the rotational shaft as a center, a partitioning ... | 11/19/1996 |
| 5566795 | Braking system for a rail car A hydraulic braking system for a rail car is provided. The system includes a hydraulic pump or motor adapted to engage a rail car axle or wheel. When rotating, the axle or wheel drives the hydraulic pump causing a hydraulic fluid to circulate. By restrict... | 10/22/1996 |
| 5518095 | Coupling for transmitting torque A coupling for transmitting torque between a driving part and a driven part has a hydraulic displacement system which includes a housing having an internally trochoidal shape and a rotor having an externally trochoidal shape. A displacer having a trochoid... | 05/21/1996 |
| 5496224 | Torsional vibration damper A device for damping torsional vibration of a drive shaft with a liquid damping medium including a primary gear connected to the drive shaft. A secondary gear supports a series of planetary gears in meshed connection with the primary gear. The revolving p... | 03/05/1996 |
| 5325944 | Apparatus and method for braking a vehicle A system for effecting the braking of a vehicle. The system is intended to be used with a vehicle which has an axle coaxial with a wheel engaging the surface over which the vehicle travels and which is rotatable with that wheel. The braking system include... | 07/05/1994 |
| 5145043 | Hydraulic clutch Disclosed is a hydraulic clutch mounted between a power source and an output shaft. The clutch includes a pump mechanism including a hollow housing assembly coupled to the power source and rotatably mounted on the output shaft and having hydraulic passage... | 09/08/1992 |
| 5107973 | Non-stage transmission A non-step transmission comprises a housing for storing hydraulic fluid therein, a driving shaft rotatably provided in the housing, a driven shaft rotatably provided in the housing in a coaxial position with the driving shaft, a first pump case rotatably ... | 04/28/1992 |
| 5078246 | Device for changing the flow rate in a torsional oscillation damper A device for changing the flow rate of a liquid damping medium is a torsional vibration damper. This damper has a rotating cylindrical damper housing, connected between a drive shaft and a power takeoff shaft. Pinions are surface-mounted in a planetary fa... | 01/07/1992 |
| 5042630 | Constant speed drive gear motor differential A constant speed drive differential assembly (10) has an input end plate (11), a rotatable housing (17), and an output end plate (18). A gear motor (12) comprising meshing spur gears (13, 14) mounted on shafts (15, 16) are arranged in the housing (17). A ... | 08/27/1991 |
| 5014837 | Impulse torque converter Procedure and device for converting the torque acting on the shaft when energy quanti are transferred from the input shaft, driven by the engine, to the output shaft, driving the load, in the form of impulses the number of which in time unit is proportion... | 05/14/1991 |
| 4981201 | Variable drive apparatus An infinitely variable high efficiency drive mechanism that can act as a transmission or as a coupling between a prime mover and the reducing gears of a standard or automatic transmission, replacing a clutch or torque converter as a means of power transmi... | 01/01/1991 |
| 4951790 | Gerotor-type clutch with adjustable valve plate A hydraulic transmission device comprises a rotatable casing secured at one end by a first flange to an input shaft and at the other end to a second flange which supports an output shaft. Drive is transmitted by fluid introduced into an area between the o... | 08/28/1990 |
| 4924989 | Automatic clutch control system for coupling two rotating shafts The object of the invention is to provide an automatic clutch control system for coupling two rotating shafts. The system comprises a piston axially movable towards an engaged position to provide the axial clamping of at least one friction disc forming pa... | 05/15/1990 |
| 4919248 | Drive coupling unit In a drive coupling unit suitable for use in an four-wheel drive unit for motor vehicles of the type wherein a torque is transmitted via a fluid pressure produced depending on a difference in rotational speed between two rotating shafts, each working flui... | 04/24/1990 |
| 4905807 | Rotary vibration damper There is provided a device for use with a rotary vibration damper, particularly in a piston engine, which varies the flow volume rate of a liquid damping medium. Spur gears are supported in a planetary gear type system in the cylindrical casing of the dam... | 03/06/1990 |
| 4676336 | Power transmission apparatus for vehicle In a power transmission apparatus for use in a vehicle of the type in which its front and rear wheels are driven by the same engine, a first rotary shaft transmitting drive force to the front wheels and a second rotary shaft transmitting drive force to th... | 06/30/1987 |
| 4674615 | Hydraulic clutch #III A hydraulic clutch device which uses a gear pump design as its main element which, in effect, has nowhere to pump. Its center gear is driven by the input shaft while its housing unit can also rotate and comprises the output shaft. The center gear meshes with t... | 06/23/1987 |
| 4671137 | Drive device of variable transmission ratio, particularly for operating an internal combustion engine supercharger The drive device consists of a rotating casing containing a fluid and carrying internally in an idle manner a sun gear and a pair of respective planet gears which mesh with the sun gear and define a gear pump therewith; the fluid is contained in an inner ... | 06/09/1987 |
| 4610184 | Infinitely variable transmission An infinitely variable transmission requiring no external controls is shown in its preferred embodiment of the present invention as including a power housing rotatably mounted on an input and an output shaft. The output shaft includes a planetary cage and... | 09/09/1986 |
| 4577739 | Hydrostatic clutch A hydrostatic clutch of the type in which an input shaft has a casing in which a positive displacement gear pump is received and an output shaft is connected to the gear pump. According to the invention the gear pump includes a gear pump body provided wit... | 03/25/1986 |
| 4407401 | Hydrostatic coupling A hydrostatic coupling with a housing fastened on a first coupling shaft. Several gears which operate as geared pumps are contained in recesses of the housing and are arranged in a planetary manner about a gear fastened on a second coupling shaft as a sun... | 10/04/1983 |
| 4344338 | Power transmission device A pressurized fluid-operated power transmission device, is typically shown being shaft driven from an automotive engine as the drive for the compressor of a cooler and a fan is provided with a centrifugal governor and valving for limiting output rotationa... | 08/17/1982 |
| 4322988 | Fluid braked planetary transmission A fluid braked planetary transmission is disclosed as including a driven sun gear and a plurality of meshing planet pinions carried in a housing and adapted to act as positive displacement pumps, all but one of the pinions also being adapted to act as pos... | 04/06/1982 |
| 4296849 | Automatic torque regulator An automatic torque regulator couples a motor to a load and automatically and continuously varies the torque delivered to the load to avoid large and sudden loading of the motor as can occur during start-up and shutdown. This regulator solves the problems... | 10/27/1981 |
| 4278157 | Fluid clutch A fluid clutch of the type having an eccentric pump mechanism comprises a valve sleeve which is slidably movable in an annular chamber in the impeller head and an axial fluid passage between the valve sleeve and the cylindrical shaft mounting member conne... | 07/14/1981 |
| 4248332 | Fluid gear coupling The present invention is drawn to a fluid gear coupling in which the lock up RPM between the drive member or power input shaft and the driven member or power output shaft is variable depending on the torque or power applied to the drive member or power in... | 02/03/1981 |
| 4214652 | Variable power transmission and absorption device An apparatus is provided which is adapted to deliver or absorb variable amounts of torque or to deliver variable quantities of an incompressible fluid at a predetermined pressure. The device comprises a positive displacement pump capable of pumping a comp... | 07/29/1980 |
| 4188785 | Fluid coupling Disclosed is a fluid coupling which includes: a housing being used as a rotary driving member; a rotor rotatably mounted in the housing and being used as a driven member, a fluid pump having a pump chamber defined between the housing and the rotor; a flui... | 02/19/1980 |
