Air gap anti-siphon valve

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Description

FIG. 1 is a perspective view taken from front and side of an air gap anti-siphon valve, showing my new design; and

FIG. 2 is a perspective view taken from the rear and side thereof.

Referenced Cited
U.S. Patent Documents
D246377 November 15, 1977 Pansini
D262969 February 9, 1982 Howes
D263163 February 23, 1982 Olde
D269633 July 5, 1983 Willinger et al.
D277599 February 12, 1985 Arnold et al.
D278740 May 7, 1985 Bolgert
D294285 February 16, 1988 Miskiewicz
2217132 October 1940 O'Brien
2259984 October 1941 Anderson
2284051 May 1972 Gilbert
2288247 June 1942 Kunstorff
2598002 May 1952 Langdon
2738798 March 1956 Goodrip
2997054 August 1961 Woodford
3086543 April 1963 McAuley
3125114 March 1964 Langdon
3158169 November 1964 Smith
3346001 October 1967 Camp
Patent History
Patent number: D321748
Type: Grant
Filed: Nov 21, 1988
Date of Patent: Nov 19, 1991
Inventor: Ralph Brito (Anaheim, CA)
Primary Examiner: James R. Largen
Law Firm: Stetina and Brunda
Application Number: 7/274,038
Classifications
Current U.S. Class: Pressure Regulating Or Relieving (D23/235)