Patent
   D242710
Priority
Sep 08 1975
Filed
Sep 08 1975
Issued
Dec 14 1976
Expiry
Dec 14 1990
Assg.orig
Entity
unknown
7
12
n/a
The ornamental design for an adjustable pressure relief valve, as shown and described.

FIG. 1 is a perspective view of an adjustable pressure relief valve showing my new design;

FIG. 2 is an elevational view taken from one side thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a top plan view thereof.

Schourup, Ralph W.

Patent Priority Assignee Title
D260280, Jun 05 1978 GSW Limited/Limitee Check valve casing
D283725, Jun 10 1983 Allegiance Corporation Housing for an in-line pressure relief valve
D321241, Jun 16 1988 GP COMPANIES, INC Combined pressure and thermal safety valve
D417905, Feb 18 1998 Corrupipe CC Relief valve
D693429, Mar 22 2012 Reliance Worldwide Corporation Safety relief valve
D856481, Apr 04 2018 Pressure equalization valve for a cold room
D885522, Dec 20 2018 Combination gas pressure relief valve and safety whistle
Patent Priority Assignee Title
2166742,
2254209,
2601563,
2666448,
2674260,
2697915,
2931385,
3702141,
432146,
222802,
226431,
226952,
Executed onAssignorAssigneeConveyanceFrameReelDoc
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule