| Entries |
| Document | Title | Date |
|---|
| 20080261735 | Transmission Case for Bicycles - To change the transmission gear ratios of a bike and reduce its dimensions as much as possible. The derailleur, located between the two cog sets ( | 10-23-2008 |
| 20090098962 | GEAR ASSEMBLY FOR A BICYCLE GEAR CHANGE - Gear assembly for a bicycle gear change, comprising at least one gear with a larger diameter and at least one gear with a smaller diameter. The selected gear, generally of a larger diameter, has at least one sector dedicated to upwards shifting that may include a plurality of shifting aid means to facilitate upwards shifting and a second gear, generally of a smaller diameter, has at least one sector dedicated to downwards shifting that may include a plurality of shifting aid means to facilitate downwards shifting. | 04-16-2009 |
| 20090280937 | Crank power - An improved crank mechanism for anything with crank arms such as in a bicycle or a wench with a quick release latch between a multiple radius rotary transmission means (oval sprocket, gear, pulley . . . ) and crank arms allowing the timing to be changed on the fly. This will allow a person on a bicycle to sit or stand while keeping the proper timing between the crank and the multiple radius rotary transmission means (oval sprocket, gear, pulley . . . ) | 11-12-2009 |
| 20100137082 | DERAILLEUR HANGER WITH INSERTION AID - The invention relates to a derailleur hanger for a bicycle having an insertion aid for inserting the wheel hub between the dropouts of a fork or frame. A derailleur hanger ( | 06-03-2010 |
| 20100167854 | TRANSMISSION DEVICE FOR A CYCLE - A transmission device for a cycle, such as a bicycle, which includes a bottom bracket fixed relative to the remainder of the cycle frame. The device includes a cylindrical main body centered about a first axis and a secondary body centered about a second axis, the second axis being parallel to, but not merged with, the first axis; a crankset rotationally mounted along the first axis relative to the main body and including a pair of cranks, a first circular toothed element and a second circular toothed element, both being centered on the first axis; a chainwheel rotationally mounted along the second axis relative to the secondary body and including a third circular toothed element and a fourth circular toothed element, both being centered on the second axis; the first and third toothed elements and the second and fourth toothed elements constituting a first gear train and a second gear train, respectively; a disengageable blocking device provided to block, selectively, the rotation of the first toothed element relative to the crankset or the rotation of the third toothed element relative to the chainwheel, on the one hand, and the rotation of the second toothed element relative to the crankset or the rotation of the fourth toothed element relative to the chainwheel, on the other hand. | 07-01-2010 |
| 20100234153 | TRANSMISSION NEUTRALIZING STRUCTURE FOR PEDAL-POWERED VEHICLE - A transmission neutralizing structure for a pedal-powered vehicle is disclosed. The transmission neutralizing structure is provided on one of sprocket sets of the vehicle, and includes a free gear and a bearing by which a center of the free gear is coupled with a rotatory assembly so that the rotatory assembly and the free gear are rotationally disconnected in both directions. The pedal-powered vehicle has a chain shiftable between the sprocket set and the free gear under control of a derailleur gear unit. When the derailleur gear unit is set in a neutral gear position, the chain is engaged with the free gear. The free gear further has a safety device, which kinetically couples the free gear with the sprocket set. | 09-16-2010 |
| 20130035183 | BICYCLE SPROCKET ASSEMBLY - A bicycle sprocket assembly has a first sprocket with a plurality of first radially protruding portions, a second sprocket with a plurality of second radially protruding portions and a sprocket support member. The second sprocket has more teeth than the first sprocket. The sprocket support member includes a plurality of sprocket mounting portions extending radially outwardly from a freewheel engaging portion. Each of the sprocket mounting portions has first and second sprocket mounting openings for fixing the first and second sprockets, respectively. The first sprocket mounting opening is circumferentially offset from the second sprocket mounting opening with respect to a center rotational axis of the sprocket assembly. The radially innermost edge of the second radially protruding portion is spaced by a radial distance that is smaller than a radial distance of the radially outermost edge of the first sprocket mounting openings with respect to the center rotational axis. | 02-07-2013 |
| 20130130852 | MOTION TRANSMISSION SYSTEM OF A BICYCLE - A sprocket assembly mounted to a hub has at least eleven sprockets. The hub is able to rotate about a rotation axis and has a plurality of spoke attachment seats and a fastening portion to a frame of the bicycle. On the hub a predetermined axial distance is defined between a plane, substantially perpendicular to the rotation axis, comprising the points of the spoke attachment seats closest to the freewheel body and a plane, substantially perpendicular to the rotation axis and defined in the fastening portion to the frame, comprising the attachment points to the frame closest to the freewheel body. All of the sprockets of the sprocket assembly, when associated with the freewheel body, have an overall axial width that is lower than or equal to the predetermined axial distance. The chain has a maximum thickness between 4.6 mm and 5.8 mm. | 05-23-2013 |
| 20130331210 | BICYCLE CHAIN RINGS WITH RAMPS - Embodiments of the present invention include bicycle chain rings for bicycles having specially shaped ramps with lifting surfaces for improved up-shifting performance. Additional embodiments of the bicycle chain rings of the present invention may be configured with one or more additional features formed within the chain rings including a transition slide, a tapered ramp face, a ramp bridge, a ramp lead, a trailing transition slide and a wear pin. | 12-12-2013 |
| 20140335983 | BICYCLE SPROCKET - A bicycle sprocket includes a sprocket body, and a plurality of sprocket teeth. At least one of the sprocket teeth includes a first layered member, a second layered member and a third layered member. The first layered member has a first axial surface and a second axial surface. The second layered member is attached to the first axial surface such that the first and second layered members overlap each other in an axial direction as viewed parallel to a rotational axis of the sprocket body. The third layered member is attached to the second axial surface such that the first and third layered members overlap each other in the axial direction as viewed parallel to the rotational axis of the sprocket body. The first layered member has a specific gravity that is less than those of the second layered member and the third layered member. | 11-13-2014 |
| 20150024884 | Multiple-sprocket arrangement for a bicycle gearing - A multiple-sprocket arrangement for mounting on a rear wheel axle of a bicycle includes a receiving body designed for mounting on the rear wheel axle, and a sprocket assembly. The sprocket assembly includes a first sprocket, the inner diameter of which is greater than an outer diameter of the receiving body and which is connected to the receiving body. The sprocket assembly further includes at least one second sprocket, the inner diameter of which is smaller than an outer diameter of the receiving body and which is designed in an unsupported manner and connected to the receiving body in a torque-transmitting manner by means of the first sprocket. | 01-22-2015 |
| 20170233037 | BICYCLE DRIVING SYSTEM AND A MULTIPLE REAR SPROCKET ASSEMBLY THEREOF | 08-17-2017 |
