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Title: Power transmission device of motorcycles

Abstract: A power transmission device of a motorcycle comprising a main transmission case formed integrally with an engine crank case and accommodating a main transmission, and a sub-transmission case provided at the rear side of the main mission case. The sub-transmission case accommodates a sub-transmission which is drivingly connected to the main transmission and also to a rear wheel of the motorcycle through a transmission mechanism. The transmission mechanism and the sub transmission are disposed at opposite sides of the rear wheel. The sub-transmission case is composed of a case body and a cover for covering an opening of the case body. The opening is formed at a lateral side of the gears of the sub-transmission so that the gears are accessible and replaceable by removing the cover from the opening.


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Inventors: Onda, Takanori (Kawagoe, JP)
Kawasaki, Hiroshi (Tokorozawa, JP)
Misawa, Mitsukuni (Tokyo, JP)

Application Number: 06/188365
Filing Date: 1980-09-18
Publication_date: 1983-02-15
Assignee: HONDA MOTOR CO LTD (JP)

Primary Class(es): 180/226 74/337.500, 180/365, 180/230, 74/745, 74/325
Other Classes: B62M11/06; F16H63/18; F16H63/44; B62M11/00; F16H63/08; F16H63/00; B62M11/06; B62M17/00
US Patent Ref:
Re26608June, 1969Hopkins180/230
2241002May, 1941Peterson74/745Auxiliary transmission gearing
3421384January, 1969Okamota et al.743/375CHANGE SPEED APPARATUS FOR A VEHICLE
3435708April, 1969Honda et al.74/745SPEED-CHANGE APPARATUS
3438277April, 1969Okamoto74/745DRIVING APPARATUS FOR A MOTORIZED TWO-WHEEL VEHICLE
3457798July, 1969Musgrave743/375TRANSMISSION UNIT
3739656June, 1973Williams et al.743/375SHIFT CONTROL MECHANISM

Other Refs: AU162400DE2499910
April, 1955180/226
June, 1930180/219

Primary Examiner: Peters Jr., Joseph F.
Assistant Examiner: Weaver, Ross
Attorney: Posnack, Roberts, Cohen & Spiecen
Claims: