Motors: expansible chamber type – Cyclically operable – Adjustable working member reversal position
Patent
1981-08-28
1984-02-14
Maslousky, Paul E.
Motors: expansible chamber type
Cyclically operable
Adjustable working member reversal position
91275, 91533, 92118, 92161, 74590, 60369, F01L 2508, F01B 1500, F15B 1306
Patent
active
044309244
ABSTRACT:
A petroleum pumping unit which is especially suitable for use in remote oil fields and under unpredictable pumping conditions is disclosed. The petroleum pumping unit of the present invention, which is easily movable between a folded, collapsed position for storage and shipment and an erect position for pumping operations, includes a horizontal support platform on which is pivotally mounted a mast assembly including a pair of masts spaced outwardly from the centrally positioned well polish rod. The polish rod is engaged by a notch in a horizontal, vertically movable bridle and is powered by at least one pair of flexibly mounted hydraulic cylinders and associated piston rods attached to the bridle and positioned between the polish rod and the masts and parallel thereto. Vertical movement of the bridle and, therefore, the stroke of the polish rod is defined by upper and lower limit switches which are actuated by actuating means on the bridle. A counterweight support box which surrounds the masts and is vertically movable thereon is provided to assist the cylinders in powering the polish rod. Tapered weight brackets including diagonal projecting ridges engage notched counterweights which are held in place by gravity and prevented from contacting the mast by weight guards. The counterweight box may be eliminated and a plurality of spaced cylinders employed to power the polish rod.
REFERENCES:
patent: 1845176 (1932-02-01), Palm
patent: 2073809 (1937-03-01), Salentine
patent: 2268945 (1942-01-01), Kelley
patent: 2644307 (1953-07-01), Blair
patent: 2683424 (1954-07-01), Kane
patent: 3128675 (1964-04-01), Dulaney
patent: 3153387 (1964-10-01), Sadoucet
patent: 3535985 (1970-10-01), Attebo
patent: 3777491 (1973-12-01), Bender
patent: 3782117 (1974-01-01), James
patent: 3971213 (1976-07-01), Kelley
patent: 4114375 (1978-09-01), Saruwatari
patent: 4201115 (1980-05-01), Ogles
Dunn Richard P.
Garrels Wilbur D.
Hydrowell SA
Maslousky Paul E.
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