Patent ID: 6270438
Filing Date: 2001-08-07
Classification: B62M

Abstract:
A combination driving hub (10) for a bicycle having a housing with securing means extending outward therefrom to a rim, wherein the improvements comprising:a pair of central openings defined in the housing,a spindle (12) with a first side and a second side, and extending through the pair of central openings,a first tube (14) fitted to the first side of the spindle (12) and having a first pair of bearings (142, 144) fitted in the first tube (14) and through which the spindle (12) is inserted, with at least one of the first pair of bearings being a single direction bearing, the first tube (14) being able to rotate about the spindle (12), with a first end thereof inserted in the housing and a second end protruding from the housing,a second tube (15) fitted to the second side of the spindle (12) and having a second pair of bearings (152, 154) fitted in the second tube (15), and through which the spindle is inserted with at least one of the second pair of bearings(152,154) being a single direction bearing, the second tube (15) being able to rotate about the spindle (12), with a first end thereof inserted in the housing and a second end protruding from the housing,a first driving bevel gear (14) securely affixed on the first end of the first tube (14),a second driving bevel gear (15) securely affixed on the first end of the second tube (15),a driven bevel gear (18) installed in the housing by means of an axle (182) securely inserted in a bearing (184) securely affixed in an opening defined in a periphery of the housing, and engaging with said two driving bevel gears (16, 17),a freewheel gear (26) securely affixed on the second end of the second tube (15),a driving means provided between the first tube (14) and an electric motor, and driving the first tube (14) via the electric motor.