Shock absorbing snubber for derrick hooks

Details Shock absorbing snubber for derrick hooks Shock absorbing snubber for derrick hooks

1982-08-05

1984-03-27

Reger, Duane A.

Spring devices

Fluid

Expansible-contractible chamber device

188282, F16F 919

Patent

active

044389108

ABSTRACT:
An improved shock absorbing snubber for derrick hooks is shown which includes a stationary hydraulic plunger and a telescoping barrel arrangement. A spring loaded check valve mounted on the plunger allows generally free fluid flow as the barrel is moved in one direction relative to the plunger but restricts the flow of fluid as the barrel is moved in the opposite direction.

REFERENCES:
patent: 2500459 (1950-03-01), Hoover et al.
patent: 3444965 (1969-05-01), Dobkins

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