Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1989-12-29
1991-07-02
Braun, Leslie A.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
74 892, 74590, F16H 1906
Patent
active
050276662
ABSTRACT:
A compact well jack is particularly suitable for reciprocating a long stroke rod pump and in situations wherein horizontal area around the well head is limited. The pump jack has a frame with elongated guides, a lifting bar slidably disposed between the guides, a horizontal slot in the lifting bar, pulleys carrying an endless belt having a stud affixed opposite to a counter weight and extending into the slot such that rotation of the pulleys vertically reciprocates the lifting bar and sucker rod string while the stud moves horizontally within the slot.
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Anchell Scott
Braun Leslie A.
Conoco Inc.
Reinert A. Joe
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