Seismic gas shut-off valve

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Description

FIG. 1 is a front elevational view of a seismic gas shut-off valve showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is an elevational view of the left side thereof;

FIG. 5 is an elevational view of the right side thereof; and

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D103582 March 1937 Murphy
D180010 April 1957 Britton
4278102 July 14, 1981 Kelley et al.
4336818 June 29, 1982 Dauvergne
4485832 December 4, 1984 Plemmons et al.
4565208 January 21, 1986 Ritchie et al.
Patent History
Patent number: D287871
Type: Grant
Filed: Apr 2, 1984
Date of Patent: Jan 20, 1987
Inventors: David E. Ritchie (Anaheim Hills, CA), Edward E. Seay (Anaheim, CA)
Primary Examiner: James R. Largen
Law Firm: Knobbe, Martens, Olson & Bear
Application Number: 6/595,693
Classifications
Current U.S. Class: D23/19