Chainless transmission unit of a bicycle

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Description

FIG. 1 is a perspective view of a chainless transmission unit of a bicycle showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
4846489 July 11, 1989 Kleinbenne
5078025 January 7, 1992 Wei et al.
5088340 February 18, 1992 Seal
5426997 June 27, 1995 Brion
5653150 August 5, 1997 Giynouxo
Patent History
Patent number: D401538
Type: Grant
Filed: Mar 25, 1997
Date of Patent: Nov 24, 1998
Inventor: Chen-Ching Chang (Taipei County)
Primary Examiner: Melody N. Brown
Law Firm: Rosenberg, Klein & Bilker
Application Number: 0/68,599
Classifications
Current U.S. Class: Running Gear (19) (D12/122); Frame Part (D12/117)
International Classification: 1211;