Double wheel caster

- Daifuku Co., Ltd.
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Description

FIG. 1 is a plan view of a double wheel caster showing my new design;

FIG. 2 is a front view;

FIG. 3 is a right side view;

FIG. 4 is a left side view;

FIG. 5 is a bottom view; and,

FIG. 6 is a perspective view.

Referenced Cited
U.S. Patent Documents
D220938 June 1971 Harlang
D240399 July 1976 Crescenzi
D241004 August 1976 Pinaire
D241611 September 1976 Crenscenzi
D244989 July 12, 1977 Crenscenzi
D288286 February 17, 1987 Screen
D329011 September 1, 1992 Block
D334884 April 20, 1993 Harada
3997938 December 21, 1976 Pinaire et al.
4773122 September 27, 1988 Wilcox
5014392 May 14, 1991 Melara
Other references
  • Magnum Opus Style, 1985, p. 12, Caster, center of page. International Designs Bulletin, Aug. 1982, p. 1342, Caster located in middle of page. Colson Catalog, Dec. 6, 1989, Caster, item A located on center left of page. Payson Casters, Jul. 5, 1988, p. 44, Caster, located at bottom of page.
Patent History
Patent number: D345689
Type: Grant
Filed: Dec 30, 1991
Date of Patent: Apr 5, 1994
Assignee: Daifuku Co., Ltd. (Osaka)
Inventor: Kozo Morooka (Osaka)
Primary Examiner: Wallace R. Burke
Assistant Examiner: H. Baynham
Attorneys: Edwin E. Greigg, Ronald E. Greigg
Application Number: 7/814,686
Classifications
Current U.S. Class: D/8375