Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7267022 | Multistep transmission of a layshaft type A multi-speed transmission of countershaft design having a main countershaft and a hollow countershaft arranged concentrically and having likewise two load-shift elements. A first half of the shift elements is connected with a drive unit and a second half of the shi... | 09/11/2007 |
| 6910984 | Positive engagement continuously variable transmission A continuously variable transmission comprises a cone shaped member having a shaft centrally positioned therethrough and having a plurality of radially extending wings. The cone shaped member may be slidably moveable axially with respect to said drive shaft. A ring ... | 06/28/2005 |
| 6779415 | Mechanical transmission A constant power mechanical transmission with seamless, ripple free, infinitely variable torque multiplying outputs comprises an input shaft and an output shaft. The input shaft is coupled to a pair of oscillating levers whereby rotation of the input shaft causes os... | 08/24/2004 |
| 6425301 | Continuously variable transmission A continuously variable transmission is disclosed to change an input rotational velocity along a continuous spectrum using an eccentrically positioned cam cooperating with a counterweight assembly to counteract the imbalance generated by the eccentric cam... | 07/30/2002 |
| 5390558 | Continuously variable transmission An input shaft includes a cam configured to have a variable diameter profile. An oscillating arm tracks the cam profile. Oscillating motion of the arm is converted by roller clutches back to rotary motion. Speed variation is accomplished by moving the arm... | 02/21/1995 |
| 4967615 | Mechanical transmission A mechanical transmission converts rotational motion of an input drive shaft to an alternating radially directed motion of a selected amplitude. The alternating motion imparts rotational movement to an output driven shaft through imposition of one-way clu... | 11/06/1990 |
| 4936155 | Infinite speed variation, constant power, ripple-free transmission A variable transmission having an input shaft, a lobed cam slidably splined on said shaft, and a plurality of pivotedly mounted cam followers which mechanically engage the cam is disclosed. The cam follwers are connected to an output shaft through interme... | 06/26/1990 |
| 4823627 | Mechanical transmission A mechanical transmission converts rotational motion of an input drive shaft to an alternating radially directed motion of a selected amplitude. The alternating motion imparts rotational movement to an output driven shaft through imposition of one-way clu... | 04/25/1989 |
| 4098147 | Waddington drive having a cam actuated by an integral flyweight An improved Waddington drive, employed here as a bicycle wheel hub, provides an automatically shifting transmission driven by an operator's foot pedal crank. A number of planet gears journaled for rotation in the hub engage and revolve around a fixed sung... | 07/04/1978 |
