Patent ID: 6035970
Filing Date: 2000-03-14
Classification: B62M,F03G

Abstract:
An energy storage drive assembly for a bicycle comprising, in combination:a bicycle including a frame with a cross bar, a handle, a pair of wheels, and a rear brake mounted on the frame adjacent to a rear wheel of the bicycle, wherein the rear brake has a lever mounted on the handle for engaging a brake pad of the rear brake against the rear wheel upon the depression thereof for braking purposes;a pair of rollers including a rear roller mounted to the rear brake adjacent to the associated brake pad via an interconnect member for abutting a first side of the rear wheel of the bicycle upon the engagement of the brake pad with the wheel for rotating therewith, the pair of rollers further including a front roller mounted on the frame of the bicycle and in constant abutment with a second side of a front wheel of the bicycle for rotating therewith;an energy storage unit including a housing mounted on the cross bar of the bicycle, a rotating shaft coupled between side faces of the housing, a large bevel gear fixedly mounted on the rotating shaft, a coil spring having a first end fixedly mounted on the rotating shaft and a second end fixedly mounted on the housing, a spring loaded double edged pawl rotatably mounted within the housing with an unbiased first orientation for only allowing the rotation of the large bevel gear in a first direction for allowing the storage of energy on the spring and a biased second orientation for only allowing the rotation of the large bevel gear in a second direction for allowing the dispensing of energy from the spring, and a trigger lever coupled to the handle of the bicycle and connected to the pawl for urging the same into the biased second orientation upon the depression thereof;an energy storage small bevel gear rotatably mounted on the housing of the energy storage unit in engagement with the large bevel gear and further coupled to the rear roller via a sleeved cable for rotating coincidentally therewith, wherein upon the rotation of the rear roller, the small bevel gear rotates the large bevel gear in the first direction for storing energy within the energy storage unit; andan energy dispensing small bevel gear rotatably mounted on the housing of the energy storage unit via a spring loaded arm which has an unbiased orientation with the energy dispensing small bevel gear out of engagement with the large bevel gear, the spring loaded arm further connected to the trigger lever of the energy storage unit for urging the spring loaded arm into a biased orientation upon the depression of the trigger lever to engage the energy dispensing small bevel gear with the large bevel gear, wherein the energy dispensing small bevel gear is further connected to the front roller via a sleeved cable for rotating the front roller to effect the movement of the bicycle in a forward direction when the spring loaded arm is in the biased orientation thereof.