Patent ID: 6361461
Filing Date: 2002-03-26
Classification: B62M,F16H

Abstract:
A device for transmitting power and changing the ratio between a power input shaft operating speed and a power output wheel operating speed, the device comprising:a power input shaft, the shaft comprising a disc firmly connected to the shaft wherein the disc further comprising a toothed circular surface (gear), a flat circular section, and a plurality of openings; a first power transmitting member, the power transmitting member rotatably mounted on the shaft and comprising a disc wherein the disc having a plurality of second engaging sections; a first power connecting means, the first power connecting means located between the power input shaft and the first power transmitting member and providing one-way transmission of power; a second power transmitting member, the second power transmitting member rotatably mounted on the first power transmitting member and having an circular support section; a support means, the support means provided between the circular support section in the second power transmitting member and the toothed circular surface (gear) in the disc of the power input shaft; a plurality of gears, the gears provided within the support means and being in permanent mesh with the toothed circular surface (gear) in the disc of the power input shaft; a third power transmitting member, the third power transmitting member rotatably mounted on the second power transmitting member and having an extended circular section wherein the extended circular section having a plurality of first engaging sections; a means for positioning the third power transmitting member, said means located between the flat circular section in the disc of the power input shaft and the extended circular section in the third power transmitting member; a power output member, the power output member rotatably mounted onto the third power transmitting member and having a plurality of openings extending laterally through the power output member; a second power connecting means, the second power connecting means located between the third power transmitting member and the power output member and allowing only one-way transmission of power; a first engaging means, the first engaging means comprising a plurality of first engaging members and located within the plurality of openings in the disc of the power input shaft and proximate to the plurality of first engaging sections in the extended circular section of the third power transmitting member; a second engaging means, the second engaging means comprising a plurality of second engaging members and located within the plurality of openings in the power output member and proximate to the plurality of second engaging sections in the disc of the first power transmitting member; a speed shifting means, the speed shifting means comprising a first set of extended section and a second set of extended sections and being connected to a shifting cord; a means for supporting the speed shifting means, said supporting means firmly attached to a bicycle bottom bracket and being able to rotatably receive the speed shifting means, and having a first plurality of lateral openings and a second plurality of lateral openings; a plurality of first friction diminishing means, the plurality of first friction diminishing means located within the first plurality of lateral openings in the means for supporting the speed shifting means; a plurality of second friction diminishing means, the plurality of second friction diminishing means located within the second plurality of lateral openings in the means for supporting the speed shifting means; a means for operating the speed shifting means, said means connected to the speed shifting means and to the means for supporting the speed shifting means; a spring for holding the second engaging means.