Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7370873 | Bicycle drive unit of multi pedaling type The present invention relates to a bicycle drive unit of multiple pedaling modes, comprising a drive shaft on one side having a counterclockwise one-way clutch and a clockwise one-way clutch coupled thereto by means of sunk keys and the drive shaft is engaged with a... | 05/13/2008 |
| 7341267 | Reversible ratchet mechanism A reversible ratchet mechanism includes a pair of roller clutches set to operate in opposite directions when engaged by a belt. During the forward motion of the ratchet assembly in either direction of propulsion of the belt, one roller clutch is disengaged while the... | 03/11/2008 |
| 7338058 | Bicycle frame with an integrated gear housing, and a gear housing for a bicycle frame A bicycle frame with a seat tube (1), a headset tube (3), a pedal-bearing housing (5), and a gear housing (6) is characterized by the fact that the pedal-bearing housing (5) and the gear housing (6) are directly connected to... | 03/04/2008 |
| 6956194 | Systems and methods for fabricating an electro-optical device used for image sensing Methods and systems for making an electro-optical device suitable for use in an image forming system are described. The device includes photosensors, which are covered by filter layers, to sense the presence of color in a document. The methods and systems provide fo... | 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 |
| 6929276 | Mechanism for driving bicycles Improved mechanical structure for increased efficiency in the transfer of the peddling force applied to a pedal crank assembly to the rear wheel of a bicycle is disclosed. This structure increases efficiency by decreasing the loss of exerted energy when peddling at ... | 08/16/2005 |
| 6916031 | Frictionless bicycle stopping device A bicycle braking device includes a second drive assembly between the crankshaft and the rear axle of the bicycle. The second drive assembly includes a chain drive and pair of engaged gears for reversing the direction of rotation of the crankshaft with respect to th... | 07/12/2005 |
| 6783139 | Bicycle having dual-purpose pedal A bicycle having dual-purpose pedals is provided, wherein the structure of a main shaft tube of the bicycle is improved. The structure has a main shaft, a first spring, a gear bushing, a crank, a second spring, a washer and a fixing unit. The main shaft is received ... | 08/31/2004 |
| 6705443 | Freewheel clutch for a pedal vehicle and method of transmitting power using a freewheel clutch Clutch for a pedal vehicle having pedals and a frame and a method of transmitting power from the pedals, wherein the clutch is shiftable in two rotational directions. The clutch includes a drive shaft which can rotate in each of two directions upon corresponding rot... | 03/16/2004 |
| 6695332 | Bicycle transmission device for unidirectional output from bi-directional input A bicycle with a forward and backward pedaling system which drives a bicycle forward in either a forward or a backward pedaling. A forward and backward pedaling bicycle which comprises a backward driving sprocket 6 which is installed on a driving shaft 5 for a... | 02/24/2004 |
| 6502843 | Anti-reverse system for twist vehicle A twist vehicle includes a vehicle frame, a steering unit, a twisting unit and a connecting member in which when subsequent clockwise and anti-clockwise movements are imparted to the steering unit, the movements are then transferred to the twisting unit, ... | 01/07/2003 |
| 6419252 | Traveling and accelerating system for riding a bicycle forward regardless the rotation direction of the pedals A traveling and accelerating system for bicycles includes a frame having a front wheel at a front part and a rear wheel at a rear part thereof; a pair of pedals fixed at both sides of a shaft which is rotatably supported at a boss being fixed under a cent... | 07/16/2002 |
| 6390487 | Driving direction changing apparatus of bicycle hub A driving direction changing apparatus of a rear hub of a bicycle, having a driving portion and a driving direction changing portion, which is capable of always outputting driving force in only one direction, that is, forward, by receiving the forward and... | 05/21/2002 |
| 6386566 | Freewheeling drive having forward, reverse and braking capability A drive system for a velocipede, such as a tricycle, which includes forward and reverse pedaling capabilities as well as coasting and braking capabilities.... | 05/14/2002 |
| 5918894 | Pedal mechanism for cycle and exercise equipment A bicycle mechanism to permit a forward force to be applied to the bicycle's drive wheel by backward rotation of the bicycle's pedals in addition to permitting a forward force to be applied to the drive wheel by a forward rotation of said pedals. The bicy... | 07/06/1999 |
| 5904362 | Forward-drive apparatus for a bicycle A forward-drive apparatus for a bicycle comprises a drive transferring portion 40 including a pedal 20 fixed to a pedal shaft 22 of a bicycle and for transferring the drive force to a drive sprocket 30 connected by means of a chain to a rear wheel; a driv... | 05/18/1999 |
| 5884927 | 2-way bicycle drive unit In a first form, a drive sprocket is driven constantly in a forward direction. It is mounted on a central main shaft. A pair of mutually opposed one-way clutches each have a driving part on the shaft and a driven part on the sprocket, and in pedaling in e... | 03/23/1999 |
| 5871221 | Driving apparatus for bicycles and the like An improved bicycle driving apparatus structured to generate driving power including a driving assembly to generate driving power, a tracking assembly to transmit the driving power to the rear wheel, a speed-shifting assembly structured to permit changing... | 02/16/1999 |
| 5765847 | Pedal mechanism for cycle and exercise equipment A bicycle mechanism to permit a forward force to be applied to the bicycle's drive wheel by backward rotation of the bicycle's pedals in addition to permitting a forward force to be applied to the drive wheel by a forward rotation of said pedals. The bicy... | 06/16/1998 |
| 5613918 | Bidirectional torque responsive belt tensioner This invention relates to the field of power transmission, and more specially, to a torque responsive belt tensioner for a friction belt. Because of recent concerns for the ecology of our planet there has been a resurgence of interest in human powered veh... | 03/25/1997 |
| 5533741 | Bicylce with a double power train A bicycle includes a first power train to propel the bicycle forward, a second power train to propel the bicycle forward and backward, and means for setting each of the first and second power trains from withdrawn mode into operative mode or vice versa. W... | 07/09/1996 |
| 5435583 | Clutch operated, bi-directional, bicycle gear box A clutch operated, bi-directional bicycle gear box assembly for forward and rearward peddling to still move the bicycle forward, comprised of: a gear box housing, the housing attached to the bicycle frame; a pair of foot pedals; a pair of crank arms; a bo... | 07/25/1995 |
| 5254042 | Transmission device assembly for a bicycle A transmission device for a bicycle is provided including a first transmission for obtaining a forward driving force. The first transmission drives a first free wheel in conformity with movement of a first drive unit when a crank shaft is forwardly rotate... | 10/19/1993 |
| 4790552 | Children's cable driven mini-car A children's mini-car includes a three-gear set disposed on a rear axle. The three-gear set, which is driven by the ropes disposed on both sides of the rear axle, is arranged to cooperate with accelerator pedals located on both sides of a front transverse... | 12/13/1988 |
| 4358126 | Invalid vehicles A 3-wheeled velociman having individual power transmission units 40 to each of the co-axial rear wheels 11, 12. Power to the units is supplied by a pair of hand activated levers 50, 51 each of which connects with an input shaft 41 to the respective unit v... | 11/09/1982 |
| 4070032 | Four wheel pedal driven vehicle A four wheel, pedal driven vehicle particularly adapted for two persons seated in tandem, wherein each person alone or together can operate the vehicle by pedaling and steering. The vehicle comprises a unitary frame, a front spindle yoke assembly in combi... | 01/24/1978 |
| 3941075 | Pedal powered amphibian tricycle with blower-turbine coupling means A three wheeled amphibian vehicle operated by pedal power and including an air blower coupled to a disk turbine. The turbine is a flat circular rotatable structure having blade cavities on both upper and lower faces. Twin nozzles, connected to the blower,... | 03/02/1976 |
