Kenneth Cook

US Patent:

40461564, Sep 6, 1977

Filed:

Dec 4, 1975

Appl. No.:

5/637582

Inventors:

Kenneth C. Cook - Walnut Creek CA

Assignee:

Systron-Donner Corporation - Berkeley CA

International Classification:

F16K 1740

US Classification:

137 68A

Abstract:

Valve apparatus is disclosed for discharging pressurized fire extinguisher fluid from a container. The valve includes a diaphragm which is removably mounted within a two-part housing to facilitate field replacement. The diaphragm is formed with a semi-spherical shell which is mounted across a passage in the housing with a concave side of the shell facing the pressurized fluid. The shell is fabricated of a metal which is pre-stressed so that the diaphragm ruptures above a predetermined fluid pressure for relieving over-pressure from the container. An annular rim of the diaphragm includes a ductile metal ring which is compressed between the housing parts into fluid sealing relationship with an annular knife edge seal. A squib cartridge is mounted in the housing to rupture the diaphragm and permit the fluid to discharge through the passage. A screen is mounted in the passage to screen out fragments of the ruptured diaphragm from the flow stream.

US Patent:

40846024, Apr 18, 1978

Filed:

Oct 26, 1976

Appl. No.:

5/735159

Inventors:

Kenneth C. Cook - Walnut Creek CA

Assignee:

Systron-Donner Corporation - Berkeley CA

International Classification:

F16K 1740

US Classification:

137 68A

Abstract:

Valve apparatus is disclosed for discharging pressurized fire extinguisher fluid from a container. A valve housing includes a valve body and manifold between which a diaphragm which is removably mounted to facilitate field replacement. The diaphragm comprises a semi-spherical shell which is mounted across a passage in the housing with a concave side of the shell facing the pressurized fluid. The shell is fabricated of a metal which is pre-stressed so that the diaphragm ruptures above a predetermined fluid pressure for relieving over-pressure from the container. A dual seal is formed about the rim of the diaphragm by means of an O-ring and an annular knife edge which are disposed within a recess of the manifold body. The valve body and manifold are secured together in metal-to-metal contact at their interface to prevent leaking. A squib cartridge is mounted in the housing to rupture the diaphragm and permit the fluid to discharge through the passage.