Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7055403 | Frictional clutch assembly A clutch assembly has a driving assembly and a transmission assembly. The driving assembly has an input axle and at least one driving gear. The transmission assembly is connected to the driving assembly and has an output axle, at least one driven gear, an inner axle... | 06/06/2006 |
| 7007780 | Variable speed clutch A variable speed slip clutch is provided. The clutch has an output shaft, a first and second input hub, and output hub, a wrap spring and a control hub. In one embodiment, the clutch includes a source coupler coupled to a first and a second input drive. The output s... | 03/07/2006 |
| 6969338 | Method for controlling and regulating a drive train Described is a method for controlling and regulating a drive train of a vehicle comprising one drive unit, one transmission and one output unit. The transmission has controllable free-wheel device corresponding with toothed wheel pairs for disconnecting or connectin... | 11/29/2005 |
| 6905439 | Method for controlling and regulating a drive train Disclosed is a method for controlling and regulating the drive train of a vehicle, comprising a drive unit, a transmission and an output unit. The transmission has controllable free-wheel units corresponding with pairs of toothed wheels for disengaging or engaging a... | 06/14/2005 |
| 6223613 | Preload constant mesh gearbox An improvement to gear systems, the improved gear system characterized by at least one gear-wheel (42c) provided about a shaft (34), the shaft (34) and the or each gear-wheel (42c) being provided with a actuable engagement therebetween in both rotational ... | 05/01/2001 |
| 5507198 | Simple low-cost mechanical transmission for accommodating variable loads A mechanical transmission (10) includes a first gear (13), a second gear (15), a slip clutch (14), an input shaft (11), a fourth gear (20), a one-way bearing (21), a third gear (18) and an output shaft (12). The first gear (13) and the slip clutch (14) ar... | 04/16/1996 |
| 5303605 | Automatic transmission for bicycles An automatic transmission for mounting within the rear fork of a bicycle includes a plurality of pairs of constant mesh gears and a plurality of discs. Each disc is concentric with one of the gears in each pair and includes a notch for partially enclosing... | 04/19/1994 |
| 5251504 | Automatic transmission An automatic transmission is provided for driving a rotating wheel having an axle mounted onto a support frame and especially a bicycle frame. The transmission comprises a power input means such as a dual crank-pedal mechanism attached to the frame for re... | 10/12/1993 |
| 4718295 | Free-wheeling gears for a multiple speed transaxle transmission A multiple speed ratio power transmission mechanism for an automotive vehicle adapted to be mounted in a transverse position with respect to the fore and aft axis of the vehicle includes a torque input shaft having input gearing fixed thereto. A first cou... | 01/12/1988 |
| 4674358 | Manual with auxiliary transmission A vehicular transmission in which a multiple speed manual transmission of the two parallel shaft type has an auxiliary transmission connected in series between the two shafts for some of the multiple speeds. The auxiliary transmission providing a high spe... | 06/23/1987 |
| 4594908 | Transmission with two parallel driving shafts bearing two driving gears each meshed with same driven gear on parallel driven shaft A power supplying member supplies rotational power in a certain rotational direction to an input member of the transmission, and a power receiving member takes out power from a driven gear wheel shaft. Two driving gear wheel shafts extend parallel to the ... | 06/17/1986 |
| 4538475 | Speed-changing transmission device for vehicles A speed-changing transmission device for vehicles includes a speed-changing shaft connected to rear wheels and disposed at the rear side of an input shaft driven by an engine co-axially with the input shaft, a counter shaft mounted in parallel with the sp... | 09/03/1985 |
| 4400163 | Marine propulsion device including an overdrive transmission The overdrive transmission for a marine propulsion device includes a first drive gear mounted for common rotation with an input shaft connected to a power source, such as an internal combustion engine, a first driven gear mounted for common rotation with ... | 08/23/1983 |
| 4331432 | Hydraulically actuated two-speed transmission for a marine propulsion device Disclosed herein is a marine propulsion device including an input shaft drivingly connected to a power source, a lower unit having a rotatably mounted drive shaft extending in coaxial relation to the input shaft, a rotatably mounted propeller shaft carryi... | 05/25/1982 |
