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US 4,520,837 AGranted
Cover retainer
AssigneeHalliburton Company
InventorsClinton W. Cole, Verlin R. Beach
Life of this patent
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AssigneeHalliburton Company
InventorsClinton W. Cole, Verlin R. Beach
Estimating the term…
The cover retainer of the present invention is secured to the fluid end of a plunger-type high pressure pump behind a substantially circular protective cover including a shear disc surrounded by an annular outer portion, which cover is held in place by the retainer. When subjected to a compressive load by the plunger in excess of a predetermined limit, the shear disc shears from the outer portion along an arcuate boundary of reduced wall thickness between the center and outer portions and the sheared center portion is propelled by the pressure into the retainer, the interior of which is of substantially frustoconical configuration, with the base of the cone oriented substantially coaxially with respect to the shear disc. As the shear disc enters the interior of the retainer, its energy is substantially dissipated through contact between the periphery of the disc and the retainer inner wall without harm to the retainer.
A cover retainer for a fluid end of a plunger-type pump adapted to retain a portion of a protective cover including first and second disc-shaped portions adapted to separate along a boundary therebetween when subjected to cylinder pressure above a predetermined limit, said cover being provided to relieve pressure in a cylinder of said pump when said pressure exceeds said predetermined limit, comprising:
A cover retainer adapted to be disposed in the end of a cylinder of a fluid end of a plunger-type pump behind a protective cover including an outer portion including a disc-shaped inner portion circumferentially surrounded by said outer portion;
In a method of preventing overpressure in a fluid end of a plunger-type pump, comprising providing an aperture in said fluid end in communication with at least one cylinder in said fluid end and the exterior of said pump;
Dependencies are inferred from the claim text.