Shock absorbing means for a rocker arm type oil well pump

Details Shock absorbing means for a rocker arm type oil well pump Shock absorbing means for a rocker arm type oil well pump

1980-06-05

1982-08-31

Smith, Leonard E.

Machine element or mechanism

Elements

Pitmans and connecting rods

74 41, 60369, 417399, F16H 2132

Patent

active

043466206

ABSTRACT:
Apparatus for pumping oil from a well includes a hydraulic pump for reciprocating a sucker rod string. A counterweight is connected to the sucker rod string by a chain strung over sprockets within a compact framework. The hydraulic pump applies a shock absorbing back pressure to the sucker rod.

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