Bicycle sprocket unit

- Shimano Inc.
Description

The drawings show a bicycle sprocket used in accordance with embodiments of my new design.

FIG. 1 is a front elevational view of a bicycle sproket unit showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view of FIG. 2;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front elevational view thereof, with several of the sprocket gears removed for clarity of disclosure; and,

FIG. 9 is a top perspective view thereof.

The broken line showing of environment features shown throughout the drawings are for illustrative pirposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D30038 January 1899 Patee
D35193 October 1901 Dodge
D222572 November 1971 Shimano et al.
D242539 November 1976 Manofsky et al.
D266558 October 19, 1982 Breen et al.
D306842 March 27, 1990 Beiser
D366017 January 9, 1996 Boone
D368055 March 19, 1996 Jouret
4439172 March 27, 1984 Segawa
4741724 May 3, 1988 Wang
4988328 January 29, 1991 Iwasaki et al.
Other references
  • 1996 Shimano Bicycle System Components Aug. 1995, pp. 20, 50 and 54. Schwab Cycles, element A sprocket assembly. May 1997, p. 23.
Patent History
Patent number: D432054
Type: Grant
Filed: Feb 6, 1998
Date of Patent: Oct 17, 2000
Assignee: Shimano Inc. (Osaka)
Inventor: Junichi Hanamura (Nagagun)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Linda Brooks
Law Firm: Shinjyu Global IP Counselors, LLP
Application Number: 0/83,238
Classifications
Current U.S. Class: Crank Or Sprocket (D12/123)
International Classification: 1211;