Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7357752 | Power train system having creeper module A power train assembly is driveably engaged with an input source and includes a transmission module having a casing and a drive member. The transmission module is driveably connected to the input source and a creeper module is driveably engaged with the drive member... | 04/15/2008 |
| 7316627 | Integrated two-speed motor A vehicle drive assembly includes an integrated two-speed motor that can selectively drive an output at a high operating speed or a low operating speed. The two-speed motor includes a stator mounted to a non-rotating outer housing, and a rotor that is mounted for ro... | 01/08/2008 |
| 6997840 | Apparatus for feeding oil to a clutch A transmission includes at least one planetary gear set having first, second and third members; a clutch pack connected to one of the members; and a rotatable housing member connected to another one of the members. A piston assembly is supported on the rotatable hou... | 02/14/2006 |
| 6949042 | Shiftable transmission A shiftable transmission in which at least two clutches (2, 7) actuated in closing direction by spring force and in opening direction by the exertion of pressure are arranged, wherein output of the transmission is stopped by unpressurized shifting of both act... | 09/27/2005 |
| 6826449 | Method for producing natural motions A method to produce natural motions, or self-motion, of animate or inanimate bodies or their parts by the application of pulses at two or more locations on the surface, or inside, of the bodies or their parts. Here, energy is converted into motion in one step. Turn ... | 11/30/2004 |
| 5788038 | Anti-gear-hopping device Anti-gear hopping device for a power transmission mechanism for an automotive vehicle. The power transmission mechanism may be a torque transfer case of a four wheel drive system. The anti-gear hopping device prevents undesired shifting between high range... | 08/04/1998 |
| 5758302 | Shift control system for a multiple ratio automatic transmission A control system for a multiple ratio transmission including two overrunning couplings acting in cooperation with friction clutches and brakes to effect controlled shifts between ratios to reduce inertia torque upon engagement of friction brakes associate... | 05/26/1998 |
| 5203747 | Integrated hydro-mechanical transmission An integrated hydromechanical transmission capable of achieving continuous variability from maximum forward, through zero, to full reverse, and vice versa. The unit will achieve significantly higher rates of efficiency than current hydrostatic transmissio... | 04/20/1993 |
| 5188570 | Automatic transmission having hydraulic servo device for band brake An automatic transmission has a low clutch and a band brake. The band brake is actuated by a hydraulic servo device. In order to establish well timed operations of the low clutch and the band brake upon shifting from third gear to fourth gear, both the re... | 02/23/1993 |
| 4860615 | Reversible transmission A reversible transmission for a motor vehicle, more particularly for use in a boat, operates in a forward drive mode, reverse drive mode, and neutral mode. The reversible transmission has a housing with a rotatably mounted driving or input shaft and a rot... | 08/29/1989 |
| 4760758 | Transmission system for vehicle having planetary gear type forward and backward drive switching apparatus A planetary gear type forward and backward drive switching apparatus, comprising a sun gear mounted on an input transmission shaft, a carrier mounting planetary gears meshing the sun gear and rotatable about the transmission shaft, a ring gear meshing the... | 08/02/1988 |
| 4718305 | Planetary backward and forward drive apparatus There is disclosed a planetary backward and forward drive apparatus comprising a planetary gear mechanism disposed between an input and an output shafts. The planetary gear mechanism includes a carrier connected to the input shaft, two step planet gears s... | 01/12/1988 |
| 4711138 | Automatic transmission mechanism Sun gears of a single planetary gear unit and a dual planetary gear unit are connected with respect to each other, carriers of the respective gear units in the connected state are connected to an output member, an input member is connected to a ring gear ... | 12/08/1987 |
| 4516444 | High-low braked gear drive A power drive (10) for providing from a single speed range input drive motor (12) a dual speed range output and a braking function. The selective control of the output shaft (13) is effected through the use of only a brake and a clutch (27,28) under the c... | 05/14/1985 |
| 4440041 | Winch apparatus A winch apparatus (8) with a shift control mechanism (10) is disclosed for axially positioning a shaft (66) and effecting low and high speed raising of a load on a winch drum (24) and a centered neutral condition. The winch apparatus (8) advantageously in... | 04/03/1984 |
| 3996817 | Transmission including dual input clutch assembly A transmission constructed according to the present invention includes a plurality of planetary gear sets, two inputs clutches being simultaneously engaged to establish an intermediate gear ratio within the transmission, each of the input clutches also be... | 12/14/1976 |
