Vacuum relief plumbing fitting

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Description

FIG. 1 is a left side elevational view of a vacuum relief plumbing fitting showing our new design, the right side being a mirror image of the left side;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D219815 February 1971 Palowsky
D232552 August 1974 Watson
1197395 September 1916 Politsky
1695308 December 1928 Wilt
2065523 December 1936 Groeniger
2078879 April 1937 Kaiser et al.
2312659 March 1943 Luff
2570525 October 1951 Collison
3346887 October 1967 Sommer
3894302 July 1975 Lasater
4998754 March 12, 1991 Matsumoto et al.
Patent History
Patent number: D330584
Type: Grant
Filed: Jul 2, 1990
Date of Patent: Oct 27, 1992
Inventors: Eric G. Snoke (Modesto, CA), Mark R. Boytim (Modesto, CA)
Primary Examiner: James R. Largen
Attorney: Basil Travis
Application Number: 7/547,109
Classifications
Current U.S. Class: Elbow Or With Flow Direction Change (D23/263)