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| Number | Title | Issue Date |
| 8066596 | Bicycle gear mechanism A bicycle gear assembly comprises first and second sets of cog wheels, each having at least three cog wheels of various sizes including a largest cog wheel and a smallest cog wheel. These two sets are oriented so that the largest cog wheel of the first set is aligne... | 11/29/2011 |
| 7905805 | Tension device of bicycle derailleur A tension device for a drive chain of a bicycle including a first pulley having a first rotational axis swingable around a swing center, and a second pulley having a second rotational axis movable along a movable direction to change a distance between the first rota... | 03/15/2011 |
| 7736253 | Gear-shifting apparatus for a bicycle, and bicycle incorporating same A gear-shifting apparatus is provided which easily returns a derailed chain to engagement with a tension and/or guide pulley when the chain comes off the respective pulley due to a gear-shifting operation, and enables a gear-shifting operation to be performed when a... | 06/15/2010 |
| 7361109 | Bicycle gear set A bicycle gear assembly has first and second sets of cog wheels, each having at least three cog wheels of various sizes including a largest cog wheel and a smallest cog wheel. These two sets are oriented so that the largest cog wheel of the first set is aligned with... | 04/22/2008 |
| 7354055 | Recumbent vehicle Disclosed is a recumbent bicycle having a frame with at least one tubular member having a lumen. Mounted to the frame are a rear wheel assembly and a transmission assembly. The transmission assembly can include a first gear, a second gear, and a chain that extends f... | 04/08/2008 |
| 7327991 | Pulse modulation circuit Provided is a pulse modulation circuit that improves the on/off operation and improves the on/off ratio of an output power of the entire pulse modulation circuit in the switching operation. The pulse modulation circuit inputs a local oscillation wave and a DC pulse ... | 02/05/2008 |
| 7302874 | Handlebar gear shifter for bicycle A handlebar gear shifter for a bicycle includes a tabular handlebar having a support plate extending from an end of the handlebar at the top of the peripheral thereof. A sleeve is rotatably mounted to the handlebar. A fan-shaped mediate member has an end pivotally c... | 12/04/2007 |
| 7264256 | Bracket assembly for a motor controlled bicycle transmission A bracket assembly for mounting a motor or other control device to a bicycle frame includes a bracket base for supporting the control device at least partially above a chain stay, and a bracket support extending from the bracket base for coupling the bracket base to... | 09/04/2007 |
| 7252610 | Automotive engine accessory drive system In a belt drive system 20 for transmitting torque at a crankshaft 11 of an automotive engine 10 to a supercharger (engine accessory) 130a, an output pulley unit 40 formed of a first flat pulley 50 and a second flat pu... | 08/07/2007 |
| 7247108 | Method and apparatus for controlling an automatic bicycle transmission An apparatus for determining when to shift a bicycle chain from a first sprocket having a first number of teeth to a second sprocket having a second number of teeth comprises a memory for storing a reference value, and a processor that determines a shift value corre... | 07/24/2007 |
| 7207912 | Bicycle shift control apparatus that prevents undesirable chain angles A shift control apparatus is provided for a bicycle having a plurality of front sprockets and a plurality of rear sprockets, wherein a front derailleur shifts a chain among the plurality of front sprockets and a rear derailleur shifts the chain among the plurality o... | 04/24/2007 |
| 7137314 | Hydraulic gear shift mechanism A hydraulic gear shift mechanism for a bicycle having a positioning mechanism for controlling the motion of the piston of a master cylinder assembly is disclosed, wherein the master cylinder assembly is in communication with a slave cylinder for operation of a derai... | 11/21/2006 |
| 7128672 | Cluster sprockets for bicycle transmissions and other prime movers This invention concerns a sprocket gear for facilitating the derailing of the chain of a bicycle transmission and other prime movers. The sprocket gear includes at least two sprockets axially and concentrically positioned relative to one another. Each sprocket inclu... | 10/31/2006 |
| 7048659 | Gear shift device for bicycles A motorized bicycle gear shift device comprising a derailleur and an electric motor, associated directly with the derailleur, for controlling the derailleur and an electric transducer of absolute type, also associated with the derailleur for producing an electric si... | 05/23/2006 |
| 6793598 | Rear derailleur device for a bicycle A rear dérailleur device is provided, in particular for a bicycle equipped with a front dérailleur and a chain connecting a set of pinions with a set of disks. The rear dérailleur device includes a rotatable base provided with a return spring forcing the base in ... | 09/21/2004 |
| 6641494 | Bicycle front derailleur fork and derailleur comprising this fork A forked member for a bicycle front derailleur is provided on the inside face of its outer plate with an extra plate, preferably made of a plastic with a low coefficient of friction, that locally reduces the gap between the two plates of the forked member... | 11/04/2003 |
| 6634971 | Process for controlling gear shifting in a cycle, and corresponding system and components A system for controlling gear shifting in a transmission of a cycle, includes at least one gear wheel or sprocket on which a transmission element is engaged to perform transmission of motion as a result of movement in a predetermined direction. The gear s... | 10/21/2003 |
| 6293881 | Operating device for vehicle component assembly An operating device is provided for operating a vehicle component assembly. More specifically, the operating device moves a movable member between at least two positions. The operating device especially relates to bicycle components that are actuated by a... | 09/25/2001 |
| 6189905 | Shock absorbing bicycle with pressurized air supply system A pressurized air supply system for providing pressurized air to an air powered derailleur of a bicycle having a bicycle frame. The system comprises an air pumping mechanism attached to the bicycle frame and adapted to supply pressurized air when actuated... | 02/20/2001 |
| 6162140 | Motor driven derailleur A motor driven derailleur includes a base member; a movable member; and a linkage mechanism including a link member coupled to the base member and to the movable member so that the movable member moves relative to the base member, wherein the link member ... | 12/19/2000 |
| 5865062 | Method and device for speed control of a bicycle A speed control method and device for a bicycle, aimed at synchronously controlling both front and rear derailleurs to achieve predetermined sequential combinations of front and rear gears of front and rear gear systems, respectively, for a gradual and sm... | 02/02/1999 |
| 5803848 | Gear change system In order to improve a gear change system for bicycle derailleur gears, comprising a first chain changer for shifting the chain to different chain wheels on the pedal-crank side, a second chain changer for shifting the chain to different pinions on the whe... | 09/08/1998 |
| 5755139 | Bicycle shift levers which surround a handlebar A control body is provided for mounting to a bicycle in close proximity to a handlebar for controlling a pulling and releasing of the transmission element. A first lever is mounted to the control body for movement which causes the control body to effect p... | 05/26/1998 |
| 5681234 | Automatic transmission shifter for velocipedes An automatic speed range shifter for bicycles is disclosed which produces a downshift when a predetermined pedal force is exceeded and which produces an upshift when a predetermined pedal rotational speed is exceeded. A pedal force sensor comprises a stra... | 10/28/1997 |
| 5672133 | Bicycle gearing system In combination, a bicycle having a frame and front and rear wheels and a bicycle gearing system which includes a movable bottom bracket mounted on the frame of the bicycle. A pedal axle is rotatably mounted in the bottom bracket. A chain extends between t... | 09/30/1997 |
| 5621382 | Display apparatus for a bicycle A display apparatus for a bicycle has a display panel (3). The display panel (3) includes a plurality of rear speed stage display sections (21-28) for displaying a speed stage of a rear derailleur. The rear speed stage display sections are formed of a plu... | 04/15/1997 |
| 5599244 | Automatic transmission shifter for velocipedes An automatic speed range shifter for bicycles is disclosed which produces a downshift when a predetermined pedal force is exceeded and which produces an upshift when a predetermined pedal rotational speed is exceeded. A pedal force sensor includes a strai... | 02/04/1997 |
| 5588925 | Shifter for transmissions on bicycles This invention relates to a shifter for the actuation of derailleurs on bicycles with an integrated transition distance for shifting the chain from a smaller sprocket to the next larger sprocket by means of a detent element. The detent element interacts w... | 12/31/1996 |
| 5483137 | Control device A control device for controlling at least one adjustment member, in particular an electrical chain transfer of a bicycle, is proposed. The control device comprises a signal transmitter which is disposed at a location distant from the at least one adjustme... | 01/09/1996 |
| 5470277 | Power operated gear change assembly for bicycles A power operated gear change assembly for bicycles, which includes a gear change whose derailleur is displaceable by an electric geared motor and associated power supply accumulator, operated through a manual control device or detector for detecting the d... | 11/28/1995 |
| 5213549 | Derailleurs for multi-speed bicycles The derailleur includes a relatively long, torsion-resisting bar extending below and generally along one of the two rear wheel-supporting bicycle frame members. The front end of said bar is held by a fastener secured to the bicycle frame adjacent the hous... | 05/25/1993 |
| 5213548 | Gear shifting system for derailleur equipped bicycle A gear shifting system for use on a derailleur equipped bicycle having automatic and manual modes of operation. A microcontroller is mounted to the bicycle frame. Sensors are also mounted to the frame to allow the microcontroller to determine the most eff... | 05/25/1993 |
| 4530678 | Derailer mechanism A particularly satisfactory derailer type bicycle can be constructed using front and rear derailer mechanisms in connection with the pedals and the rear wheel of the bicycle, respectively, and a control cable which operates these two mechanisms in synchro... | 07/23/1985 |
| 4437357 | Double lever assembly for bicycle speed control In a double assembly for bicycle speed control including a first lever for operating a rear derailleur by means of a control cable in order to shift an endless drive chain from one rear sprocket to a selected rear sprocket of a multiple freewheel, and a s... | 03/20/1984 |
| 4412828 | Control means for shifting gears on dual shift bicycles An easy to operate control means for shifting gears on dual shift bicycles is described. The control means is constructed so that the front and rear derailleurs of a dual shift bicycle are controlled together to shift to any selected gear from any engaged... | 11/01/1983 |
| 4340377 | Speed change device Complementary relatively stationary pulleys having axially oppositely stepped diameter portions form a variable speed drive between a motor coupled with one stepped pulley and a driven device coupled with the oppositely stepped pulley such as the spindle ... | 07/20/1982 |
| 4304143 | Speed changing device for a bicycle A speed changing device for a bicycle comprises a lever unit and a winding unit. The lever unit has a control lever, a first winding body carrying a first control wire connected to a front or rear derailleur, and an engagement for selectively transmitting... | 12/08/1981 |
| 4205558 | Method and means for mounting and controlling change speed gears at the rear wheel and the crank-wheel of a bicycle or similar vehicle A method and apparatus for the control of respective speed change gear units at the rear wheel and crank-wheel of a bicycle comprising two pivotable levers mounted on the bicycle each including an integral bearing with a groove therein. A cable is associa... | 06/03/1980 |
| 4201095 | Semi-automatic gearshift for dual derailleur bicycle A single, manually operated lever rotates cam means providing guide surfaces that program a progressive series of different drive ratio combinations of the front and rear sprockets of a conventional 10-speed bicycle. The gearshift is mounted on and projec... | 05/06/1980 |
| 4194408 | Gear-shift control for bicycle transmission A bicycle transmission with one or two driving sprockets on a pedal shaft, selectively connectable with any one of several driven sprockets of progressively varying diameters on a rear-wheel axle, is controlled by a gear-shifting lever rigid with one or t... | 03/25/1980 |
