Protective cover retainer

Details Protective cover retainer Protective cover retainer

1984-01-31

1985-04-02

Freeh, William L.

Fluid handling

Destructible or deformable element controlled

Destructible element

417568, 417 53, F16K 1304, F04B 3912

Patent

active

045081336

ABSTRACT:
A protective cover comprises a substantially circular cover including a center shear disc surrounded by an annular outer portion, mounted in the fluid end of a plunger-type high pressure pump. The cover is held in place by the retainer assembly of the present invention, which is secured to the fluid end. 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 shear disc and outer portions and the sheared disc is propelled by the pressure into the retainer assembly, striking a plug which in turn forces an impact disc into the end of the retainer, which includes a substantially circular recess therein of lesser diameter than the impact disc. The impact disc is thus sheared as the inner portion thereof enters the retainer recess, the energy from the shear disc being thereby substantially dissipated without harm to the retainer.

REFERENCES:
patent: 1765883 (1930-06-01), Ruschke
patent: 1959822 (1934-05-01), Greve
patent: 2580426 (1952-01-01), Heigis
patent: 2599593 (1952-06-01), Stroop
patent: 3158165 (1964-11-01), Benson et al.
patent: 4426109 (1984-01-01), Fike, Jr.

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