Backflow prevention valve

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Description

FIG. 1 shows a top plan view of a backflow prevention valve;

FIG. 2 shows a side view of a backflow prevention valve;

FIG. 3 shows a bottom plan view of a backflow prevention valve;

FIG. 4 shows a bottom perspective view of a backflow prevention valve; and,

FIG. 5 shows a top perspective view of a backflow prevention valve.

Referenced Cited
U.S. Patent Documents
D242709 December 14, 1976 Schourup
2685300 December 1948 Hammon
3308798 March 1967 Snider
3561472 February 1971 Lamb
4870992 October 3, 1989 Irwin et al.
Patent History
Patent number: D347465
Type: Grant
Filed: Aug 26, 1993
Date of Patent: May 31, 1994
Assignee: James Hardie Irrigation Pty Limited
Inventor: Cosmo Luppino (Murray Bridge)
Primary Examiner: Stella Reid
Assistant Examiner: Eric M. Watterson
Law Firm: Baker, Maxham, Jester & Meador
Application Number: 0/12,221
Classifications
Current U.S. Class: Valve Or Body Therefor (D23/233)