Polished rod protector and receiver
AssigneeRodgard Manufacturing Co., Inc.
InventorMason C. Winfield, Jr.
Life of this patent
Estimating the term…
Abstract
An extensible polished rod protector having alternating inner and outer diameter portions defining adjacent convolutions, and annular retainer members in the form of radial, reinforcing support plates within the outer diameter portions for preventing radially inward collapsing thereof upon extension of the protector and also preventing contact between the inner diameter portions and the polished rod. The polished rod passes through a liquid receiving container having means for trapping oil accummulated therein while permitting the egress of water therefrom. A floating rod wiper assembly in the container maintains wiping engagement with the reciprocating rod while accommodating lateral shifting and wobbling thereof.
Claims9
A liquid receiving container comprising, in combination with a reciprocable rod passing therethrough, a housing having a top wall, a bottom wall and a side wall, said top and bottom walls being provided with aligned openings for receiving said rod therethrough, a resiliently yieldable rod wiper element in wiping engagement with said rod, mounting means affixed to said wiper element, and means supporting said mounting means in said housing for lateral movement therewithin and restrained axial movvement relative to said rod thereby enabling said wiper element to accommodate lateral shifting and wobbling of said reciprocating rod.
A liquid receiving container comprising, in combination with a reciprocal rod passing therethrough, a housing having a bottom wall and a side wall for receiving and accumulating a liquid comprised of oil and water components, said bottom wall being provided with an opening for said rod, an outlet in said housing side wall spaced above said bottom wall, and means in said housing for retaining therein the oil component while enabling the water component to be discharged through said outlet.
A rod wiper assembly comprising:
- an annular split rod wiper element, a plate having a cavity therein for receiving the major portion of said rod wiper element, a retainer member having a cavity for receiving the remaining portion of said rod wiper element, said rod wiper element having opposite sides in sealing engagement against the opposed walls of said cavities, and means releasably securing said retainer member to said plate, said releasable securing means comprising fastener elements threadable into said plate between a partially threaded position and a substantially fully threaded position and radially projecting portions on said retainer member having grooves for receiving said fastener elements, and means preventing disengagement of said grooves from said fastener elements in the substantial fully threaded positions thereof.
Dependencies are inferred from the claim text.