Twin wheel castor

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Description

FIG. 1 is a front elevational view of a twin wheel castor showing my new design;

FIG. 2 is a left side elevational view thereof;

FIGS. 3 and 4 are respectively top and bottom plan views thereof;

FIG. 5 is a right side top and rear perspective view thereof; and

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D207100 March 1967 Haydock
D241513 September 1976 Fontana
D241611 September 1976 Crescenzi et al.
D266614 October 19, 1982 Neville
D272416 January 31, 1984 Screen
2770831 November 1956 Angelica et al.
2911666 November 1959 Schultz, Jr.
3214785 November 1965 Chroust
3894310 July 1975 Screen
3967342 July 6, 1976 Gebland
4120071 October 17, 1978 Crescenzi
Foreign Patent Documents
288962 January 1966 AUX
Patent History
Patent number: D313342
Type: Grant
Filed: Dec 28, 1987
Date of Patent: Jan 1, 1991
Assignee: Colson Castors (Europe) Limited (West Midlands)
Inventor: Stafford T. Screen (Oxy)
Primary Examiner: Horace B. Fay, Jr.
Law Firm: Young & Thompson
Application Number: 7/138,028
Classifications
Current U.S. Class: D/8375; Multiple (16/47)