Class / Patent application number | Description | Number of patent applications / Date published |
475182000 | PLANET PINION ENGAGES FLEXIBLE BELT OR CHAIN | 13 |
20080200297 | Simple bicycle drive shaft transmission - This transmission ( | 08-21-2008 |
20080254929 | Mounting System for an Internal Bicycle Transmission - A bicycle transmission assembly that is mountable to a bottom bracket shell of a bicycle frame. The bicycle transmission generally includes an input crank assembly, an output chainring, a planetary gear mechanism, a control system and a mounting system. The output chainring engages a bicycle drive chain that includes a plurality of chain links. The planetary gear mechanism includes a ring gear and provides a plurality of transmission paths. The planetary gear mechanism is mounted coaxially about the shell axis. The control system is operatively connected to the planetary gear mechanism for selecting one of the plurality of transmission paths. The mounting system mounts the planetary gear mechanism and the control system to the bottom bracket shell. At least one chain link overlaps the ring gear as viewed along the shell axis. The at least one chain link engages the output chainring. | 10-16-2008 |
20100160106 | CONTINUOUSLY VARIABLE TRANSMISSION - This invention relates to a transmission system for transmitting a driving force from a driving unit D to a driven unit F, a transmission adjustment system for adjusting the transmission system to obtain a continuous shift ratio, a guide cone system for maintaining a concentric circle of a rotation radius when a transmission element such as a chain is rotated, a guide cone/transmission adjustment system and a continuously variable transmission system which are made by combination of the above systems. The transmission system includes the transmission element with a tooth portion for transmitting the driving force from the driving unit D to the driven unit F. A transmission adjustment method in the transmission adjustment system is varied depending upon rotation or stop of a carrier. The guide cone system includes a guide cone having a portion of which comes in contact with the transmission element is formed in a shape of a cone having a constant slope. A coupling method of the above systems and an input/output method are selected in the continuously variable transmission system. With the above construction, this invention can be applied without being restricted to the output capacity of the engine, have a simple construction, and transmit a rotation force to an output shaft from an input shaft with high efficiency to reduce energy. Particularly, this invention is widely applied to an industrial machinery as well as a transportation machinery. | 06-24-2010 |
20110070993 | ROBUST TOOTH FORMS FOR GEARING SYSTEMS - Embodiments provide for planetary gearing systems with ring gears comprising cylindrical tooth forms arrayed from a central axis and encompassing at least one planetary sprocket and a sun gear. The sun and ring gears have cylindrical tooth forms. The planetary sprocket teeth are aligned for engagement with at least one of the sun gear and ring gear cylindrical tooth forms at a contact radius from the central axis selected as a function of the sprocket tooth common involute gear shape, the sprocket radius, the sprocket tooth pitch, and of the pitch, gear radius and cylindrical form diameter of the selected at least one gear cylindrical tooth forms. | 03-24-2011 |
20110165984 | MANUAL TRANSMISSION USING CHAIN AND PLANETARY GEAR SET AS FINAL DRIVE - A transmission for an engine or motor with a reduced package size and increased efficiency comprising: an input sprocket, an output sprocket, a chain, and a planetary gear set. The output sprocket is drivingly connecting to the input sprocket through the chain. The output sprocket has a hollow center portion that receives the sun gear of the planetary gear set. The planetary gear set also includes at least two planet gears meshed with the sun gear which are mounted to a fixed planet carrier for driving a differential with a ring gear portion. When the input sprocket is rotated in a first direction, the chain drives the output sprocket and the sun gear in the first direction, and the sun gear drives the planet gears to rotate in a second direction, opposite the first direction, driving the ring gear portion and differential in the second direction. | 07-07-2011 |
20110172049 | MULTI RATIO DRIVE - A multi ratio drive including a first drive chain having a first drive chain engaged state and a first drive chain disengaged state; and a second drive chain having a second drive chain engaged state and a second drive chain disengaged state. The first drive chain drives the axle with a first gear ratio between the drive shaft and the axle when the first drive chain is in the first drive chain engaged state and the second drive chain is in the second drive chain disengaged state; the second drive chain drives the axle with a second gear ratio between the drive shaft and the axle when the second drive chain is in the second drive chain engaged state and the first drive chain is in the first drive chain disengaged state; and the first gear ratio is different from the second gear ratio. | 07-14-2011 |
20110177905 | CONTINUOUSLY VARIABLE TRANSMISSION - This invention relates to a transmission system for transmitting a driving force from a driving unit D to a driven unit F, a transmission adjustment system for adjusting the transmission system to obtain a continuous shift ratio, a guide cone system for maintaining a concentric circle of a rotation radius when a transmission element such as a chain is rotated, a guide cone/transmission adjustment system and a continuously variable transmission system which are made by combination of the above systems. The transmission system includes the transmission element with a tooth portion for transmitting the driving force from the driving unit D to the driven unit F. A transmission adjustment method in the transmission adjustment system is varied depending upon rotation or stop of a carrier. The guide cone system includes a guide cone having a portion of which comes in contact with the transmission element is formed in a shape of a cone having a constant slope. A coupling method of the above systems and an input/output method are selected in the continuously variable transmission system. With the above construction, this invention can be applied without being restricted to the output capacity of the engine, have a simple construction, and transmit a rotation force to an output shaft from an input shaft with high efficiency to reduce energy. Particularly, this invention is widely applied to an industrial machinery as well as a transportation machinery. | 07-21-2011 |
20120046140 | PLANETARY HARMONIC DIFFERENTIAL TRANSMISSION - Described is a planetary harmonic differential transmission, comprised of a rigid externally-toothed inner sprocket, a rigid internally-toothed outer sprocket, a deformable belt that is toothed on both its internal and external faces, and a set of free-rotating planetary sprockets that are mounted on a rotating carrier cage and cause the belt to progressively engage and disengage from successive portions of the rigid sprockets. The input to the transmission is the relative motion between the carrier cage and the inner sprocket, and the output is the relative motion between the outer sprocket and the inner sprocket, resulting in a differential transmission. | 02-23-2012 |
20120238392 | Belt Planetary Transmission - A belt planetary transmission comprising a sun gear ( | 09-20-2012 |
20140087909 | Planetary Belt Transmission - A planetary belt transmission has a motor drive having a motor drive shaft, a distributing pulley attached to the motor drive shaft and a collecting pulley attached to an output shaft. Two or more distributing belts are coupled to the distributing pulley and two or more collecting belts are coupled to the collecting pulley from mutually opposite radial directions. Four or more transmitting pulleys are arranged in two or more concentric pairs around the distributing pulley and the collecting pulley and are coupled to the distributing pulley and the collecting pulley via the distributing belts and the collecting belts, respectively. Two or more peripheral shafts support the transmitting pulleys, while allowing movement in a radial direction only relative to the output shaft and being preloaded so as to apply a net zero radial force on the distributing pulleys and the collecting pulleys in a plane perpendicular to respective axes thereof. | 03-27-2014 |
20140187375 | Energy Generation Method and Apparatus by the Harnessing of Centrifugal Force - An energy generation apparatus uses centrifugal force to generate energy in a controlled manner. The apparatus includes a dual function input shaft and output shaft rotatably attached to opposite sides of a housing defining an axis of orbit, an output gear fixed upon the output shaft, an input sprocket rotatably mounted on the output shaft, and at least two frame gear assemblies, each having a frame gear and at least two weight gears. The frame gears rotate about their centres and also orbit around the output gear in response to an input from the input sprocket. | 07-03-2014 |
20150119182 | Dual Planetary System - An assembly of two independent transmission systems is provided, including a drive system and an output system. The systems are connected by a shaft which transfers a torque from the drive system to a side gear rotating around a fixed gear and forming by this rotating motion a torque on a support. Also, through the shaft, the rotating and orbital motion of the support may be transferred to the drive system thus conditioning the motion of both systems. | 04-30-2015 |
20150329171 | CRANKSET AND METHOD FOR TRANSFERING POWER IN A CRANKSET - A crankset for a pedal-driven vehicle has a frame with a bottom bracket shell. The crankset includes a crank arm rotatably mounted to the bottom bracket shell of the frame; a spindle operatively connected to the crank arm at an end spaced-apart from the bottom bracket shell and rotatable about a spindle rotation axis. A stationary member fixedly mounts to the bottom bracket shell. A rotatable member operatively engages the spindle and is configured to engage the spindle in rotation. A connecting assembly operatively engages the stationary member and the rotatable member. The connecting assembly is configured to engage the rotatable member in rotation upon rotation of the crank arm about the bottom bracket shell. A pedal angular control assembly operatively connects to the spindle and is configured to control an angle of a pedal according to an angular position of the crank arm during rotation. | 11-19-2015 |