USD226431S - Pressure relief valve - Google Patents

Description

United States Patent 0 Des. 226,431 Patented Mar. 6, 1973 "ice PRESSURE RELIEF VALVE Philip w. Embury, Jr., Fairport, N.Y., assignor to Qualitrol Corporation, Fairport, NY.

Filed Feb. 8, 1971, Ser. No. 113,803

Term of patent 14 years Int. Cl. D23-01 US. Cl. D23-19 FIG. 1 is a perspective view of a pressure relief valve embodying my new design showing the front, top and one side thereof;

FIG. 2 is a perspective view showing the back, the bottom and the opposite side thereof; and

FIG. 3 is a bottom plan view thereof, with the ring omitted for convenience of illustration.

I claim:

The ornamental design for a pressure relief valve, as

References Cited UNITED STATES PATENTS D. 130,007 10/1941 Ranney D23-20 3,189,040 6/1965 Johnson 137469 OTHER REFERENCES Domestic Engineering, December 1953, p. 163, bottom right items.

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