Safety valve

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Description

FIG. 1 is a perspective view of a safety valve showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

Referenced Cited
U.S. Patent Documents
D223094 March 1972 Coleman et al.
D266019 August 31, 1982 Crossman
D304817 November 28, 1989 Earley et al.
D334616 April 6, 1993 Nimmo
968394 August 1910 Overturf
1237041 August 1917 Hilding
1433643 October 1922 Overlander
4642012 February 10, 1987 Blucher et al.
Foreign Patent Documents
1550524 December 1968 FRX
2179 January 1916 NLX
Other references
  • John Simmons Co. Cat 42--Pipe Fittings Valves Heating Material Plumbing Supplies. p. 250--No. SP-150 Plain vent cap, c. 1938. Fleck Company Plumbing Supplies Cat. 58, p. 312--No. 800 Mushroom Type Vent, c 1947.
Patent History
Patent number: D390916
Type: Grant
Filed: May 24, 1996
Date of Patent: Feb 17, 1998
Inventor: Alfred Valenzuela (Laredo, TX)
Primary Examiner: Ted Shooman
Assistant Examiner: C. Tuttle
Attorney: Harold H. Dutton, Jr.
Application Number: 0/54,913
Classifications
Current U.S. Class: Pressure Regulating Or Relieving (D23/235)
International Classification: 2301;