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US 9,810,332 B2Granted
Pressure relief valve devices and methods
AssigneeDeepsea Power & Light, Inc.
InventorsEric M. Chapman, Mark S. Olsson
Life of this patent
Estimating the term…
Abstract
Pressure relief valves for use in high pressure applications that may include a conical shaped plunger, a body with a conical shaped mating surface corresponding to the shape of the conical shaped plunger, and one or more sealing elements, such as a pair of O-rings, are disclosed.
Claims19
A pressure relief valve for high pressure operation, comprising:
- a plunger assembly including an elongate threaded shaft at a first end and a compliant cone-shaped sub-section with a smooth faced sealing surface at a second end opposite the first end;
- a body for withstanding deep ocean external pressure of a depth of at least 1000 meters, the body including a cavity with a conical-shaped mating surface to receive the smooth-faced sealing surface of the plunger assembly, and a clip to restrain the plunger assembly at the second end;
- a compression spring disposed between a portion of the plunger assembly and the body sized to withstand corresponding pressures of at depth of at least 1000 meters;
- and
- one or more seals disposed between the body mating surface and the sealing surface of the plunger assembly;
- wherein the body mating surface and the sealing surface are held in contact by the compression spring.
3 more elements
A pressure relief valve for high pressure operation, comprising:
- an adjustment nut;
- a plunger assembly including a compliant cone-shaped sub-section with a sealing surface, an adjustment element coupled to the conical shaped sub-section of the plunger to adjust an actuation pressure, and an adjustment nut;
- a body for withstanding deep ocean pressure, the body including a cavity with a conical-shaped mating surface to receive the sealing surface of the plunger assembly;
- a compression spring disposed between a portion of the plunger assembly and the body;
- and
- one or more seals disposed between the body mating surface and the sealing surface of the plunger assembly;
- wherein the body mating surface and the sealing surface are held in contact by the compression spring, the length of the anti-rotation fingers is preset to provide a predefined cracking pressure when the adjustment nut is jammed against the plunger, and the adjustment element includes a threaded shaft onto which the adjustment nut is screwed to adjust the cracking pressure of the valve by adjusting the compressing spring force.
4 more elements
An underwater lighting device, comprising:
- a deep sea pressure housing for a light or camera;
- and
- a pressure relief valve screwed into a threaded hole in the housing, comprising:
- a plunger assembly including an elongate threaded shaft at a first end and a cone-shaped sub-section with a smooth faced sealing surface at a second end opposite the first end;
- a body for withstanding deep ocean pressure, the body including a cavity with a conical-shaped mating surface to receive the smooth-faced sealing surface of the plunger assembly, and a clip to restrain the plunger assembly at the second end;
- a compression spring disposed between a portion of the plunger assembly and the body;
- and
- one or more seals disposed between the body mating surface and the sealing surface of the plunger assembly;
- wherein the body mating surface and the sealing surface are held in contact by the compression spring.
6 more elements
A battery, comprising:
- a battery housing;
- and
- a pressure relief valve disposed in the battery housing to vent gases from within the housing, the pressure relief valve including:
- a plunger assembly including an elongate threaded shaft at a first end and a cone-shaped sub-section with a smooth faced sealing surface at a second end opposite the first end;
- a body for withstanding deep ocean pressure, the body including a cavity with a conical-shaped mating surface to receive the smooth-faced sealing surface of the plunger assembly, and a clip to restrain the plunger assembly at the second end;
- a compression spring disposed between a portion of the plunger assembly and the body;
- and
- one or more seals disposed between the body mating surface and the sealing surface of the plunger assembly;
- wherein the body mating surface and the sealing surface are held in contact by the compression spring.
6 more elements
Dependencies are inferred from the claim text.