Wells – Brushing – scraping – cutting or punching-type cleaners – On sucker rod
Patent
1976-09-03
1977-09-27
Leppink, James A.
Wells
Brushing, scraping, cutting or punching-type cleaners
On sucker rod
E21B 3702
Patent
active
040505146
ABSTRACT:
This invention provides a sucker rod scraper having two main portions. An inner portion is constituted by a plastic body member affixed to and surrounding the sucker rod, the body member including an elongated cylindrical portion with a plurality of longitudinal fins extending radially outwardly therefrom and spaced angularly therearound. The second part is a plastic ring member adapted to encircle the central body adjacent the fins, the ring member having an inner diameter greater than the outer diameter of the adjacent part of the inner portion, whereby to allow a passageway for fluid or liquid to flow past the sucker rod scraper. Means are provided for retaining the ring member adjacent the fins, this being constituted in the preferred embodiment by the provision of inward recesses along the outer edges of each fin, with the ring member being dimensioned so as to permit it to register within the recesses, whereby the ring can rotate in position but cannot move longitudinally.
REFERENCES:
patent: 1272253 (1918-07-01), Green
patent: 2309791 (1943-02-01), Sanders
patent: 2794617 (1957-06-01), Yancey
patent: 3109501 (1963-11-01), Pugh
patent: 3364998 (1968-01-01), Sable
patent: 3438404 (1969-04-01), Tripplehorn
Leppink James A.
The Steel Company of Canada Limited
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