Shock absorber for oil well pumping unit

Details Shock absorber for oil well pumping unit Shock absorber for oil well pumping unit

1978-06-15

1979-12-04

Novosad, Stephen J.

Wells

With below and above ground modification

Above ground actuating means for below ground device

74581, 166 75R, 267153, E21B 4300, F16F 134, F16F 136, F16F 308

Patent

active

041767144

ABSTRACT:
A shock absorber for use to interconnect the polish rod of an oil well with the pumping unit in which the pumping unit includes a hanger bar having an opening therein receiving the polish rod, the shock absorber employing a tubular body axially receiving the polish rod, the body being supported on the hanger bar, and the body including a plurality of discs of elastomeric material, each having openings therein, and including a top plate secured to the polish rod with a polish rod clamp so that on up stroke of the pumping unit the elastomeric members are pressed and the openings therein form an air cushion to assist in alleviating shock transition from the polish rod to the pumping unit.

REFERENCES:
patent: 2038527 (1936-04-01), Eaton
patent: 2230029 (1941-01-01), Eaton
patent: 2241409 (1941-05-01), Mason
patent: 2925266 (1960-02-01), McAllister
patent: 3288455 (1966-11-01), Robinson
patent: 3363475 (1968-01-01), Foster et al.
patent: 3376031 (1968-04-01), Lee
patent: 3404877 (1968-10-01), Darnell
patent: 3515382 (1970-06-01), Gallagher
patent: 3993295 (1976-11-01), Suzuki et al.

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