Wells – Above ground apparatus – With seal for reciprocating member
Patent
1991-12-26
1993-06-08
Novosad, Stephen J.
Wells
Above ground apparatus
With seal for reciprocating member
152204, E21B 3308
Patent
active
052170691
ABSTRACT:
A wiper device for oil well sucker rods is provided as an integral resilient body fabricated of an oil-resistant elastomeric composition. The resilient body is bounded in part by upper, lower and sidewall surfaces. A flat annular base portion extends inwardly from the sidewall surface. An interior portion of frustro-conical shape extends upwardly from the base portion and terminates in an orifice adapted to embrace the sucker rod. A reinforcing band is embedded within the base portion to provide structural stability.
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Novosad Stephen J.
Rainer Norman B.
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