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| Number | Title | Issue Date |
| 7434489 | Bicycle drive system A bicycle drive system includes a front gear face, a rear gear face, a front guide assembly, a rear guide assembly, and a drive shaft coupled to a rear-suspension frame via a rear hub and a crank spindle. The bicycle drive system operates independently of the frame.... | 10/14/2008 |
| 7267023 | Miter gear transmission A miter gear transmission includes a driving shaft, an idler cluster and a driven shaft. The idler cluster includes two cone-shaped gear sets, each having a proximate end with a gear having a largest number of teeth and a distal end with a gear having a smallest num... | 09/11/2007 |
| 7201389 | Vehicle transmission A vehicle transmission includes a plurality of driven gears comprising a series of concentrically spaced ring gears. Each ring gear of the plurality of driven ring gears has an inner diametrical surface and an outer diametrical surface. Each outer diametrical surfac... | 04/10/2007 |
| 6962097 | Mechanical steering transmission unit The present invention concerns a mechanical steering transmission unit comprising an input drive shaft and two output driven shafts that can revolve in the same or opposite direction at the same speed. ... | 11/08/2005 |
| 6955624 | Motor vehicle drivetrain having at least two CNT's and flywheels This design is for a motor vehicle drivetrain utilizing flywheel rotation to store energy during the vehicle trip, either storing energy when accellerated, or releasing energy when slowed depending on the vehicle power requirements. At the same time the engine is al... | 10/18/2005 |
| 6948730 | Bicycle with speed change gear A speed change gear shaft for a bicycle having an internal speed change gear. The speed change gear is of the internal multistage type, and a speed change gear shaft is provided separately from a crankshaft of the bicycle. A swing arm on which a rear wheel is suppor... | 09/27/2005 |
| 6820513 | Reverse gear device of a combined variable transmission system A reverse gear device of a combined variable transmission system includes a housing which is mounted on the rear wheel axle of a motor scooter for housing a drive bevel gear, a driven bevel gear, an idle bevel gear, an idle gear shaft, shifting forks, and a sector p... | 11/23/2004 |
| 5622081 | Multiple speed shaft drive for a bicycle A multiple speed shaft drive for a bicycle, including: a forward disk having a plurality of concentrically disposed ring gears, wherein the forward disk is connected with the pedal crank of the bicycle; a rearward disk having a plurality of concentrically... | 04/22/1997 |
| 5425688 | Hydraulic forward/reverse shift fork control for a power transmission A shift fork for a forward-reverse shift mechanism has a hydraulic piston portion for moving the shift fork. The piston is controlled by a hydraulic valve system. The valve system is effective to delay the engagement of the respective forward and reverse,... | 06/20/1995 |
| 5342075 | Variable speed drive for a bicycle This invention relates to bicycles, specifically to an improved speed changing mechanism for a bicycle. The primary attribute of this invention is the utilization of a pair of pinion shafts and a pair of face gears to accomplish variation in speed. The fa... | 08/30/1994 |
| 5228354 | Multispeed, shaft-driven vehicle drive A multispeed, shaft-driven drive for a human propelled vehicle has a driving gear set of concentric ring gears, a driven gear set of concentric ring gears, a rotatable drive shaft having a pinion on each end and a control mechanism for moving the pinions ... | 07/20/1993 |
| 5048360 | C-axle gearing A gearing system for a lathe is shiftable from a first position, in which conical gear wheels (16, 25, 26, 36) engage each other with play, to a second position, in which the wheels engage each other without play. Reduced wear is achieved in the first pos... | 09/17/1991 |
| 4955247 | Transmission A multi-speed transmission has particular usefulness in bicycles, completely eliminating the use of the commonly used derailleur and the exposed flexible cable and the readjustment problems inherent with that prior structure. The transmission includes sep... | 09/11/1990 |
