Power unit for electric power assisted vehicle

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Description

FIG. 1 is a front, right side perspective view of the design of a power unit for an electrical power assisted vehicle;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a front elevational view thereof.

Referenced Cited
U.S. Patent Documents
D294338 February 23, 1988 Yamoda et al.
D302801 August 15, 1989 Lacroix
3779099 December 1973 Trammell, Jr.
5188003 February 23, 1993 Trammell, Jr.
5242028 September 7, 1993 Murphy et al.
5653150 August 5, 1997 Gignoux
5669467 September 23, 1997 Chiang
Patent History
Patent number: D397967
Type: Grant
Filed: Apr 21, 1997
Date of Patent: Sep 8, 1998
Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Iwata)
Inventor: Hironori Nakayama (Iwata)
Primary Examiner: Melody N. Brown
Law Firm: Knobbe, Martens, Olson & bear LLP
Application Number: 0/69,495
Classifications
Current U.S. Class: Derailleur Or Gear Unit (20) (D12/124); Crank Or Sprocket (D12/123)
International Classification: 1211;