Molded plastic paraffin scrapers and centralizers

Details Molded plastic paraffin scrapers and centralizers Molded plastic paraffin scrapers and centralizers

1976-08-10

1978-05-09

Novosad, Stephen J.

Wells

Brushing, scraping, cutting or punching-type cleaners

On sucker rod

166241, 1510416, 264259, E21B 3702

Patent

active

040881857

ABSTRACT:
A molded plastic scraper is molded in place on the sucker rod and as a result of shrink fitting of the material is firmly held in place thereon. Special configurations and materials particularly useful as and in both scrapers and centralizers are disclosed as well as additional unexpected advantages of such scrapers, configurations, and materials. A preferred method and apparatus for the production and manufacture of such scrapers and centralizers are also disclosed.

REFERENCES:
patent: 349192 (1886-09-01), Woodhouse
patent: 2934792 (1960-05-01), Harrington
patent: 2975487 (1961-03-01), Williams, Jr.
patent: 2990582 (1961-07-01), Tully et al.
patent: 2997106 (1961-08-01), Tripplehorn
patent: 3063760 (1962-11-01), Gifford
patent: 3083772 (1963-04-01), Tripplehorn
patent: 3277966 (1966-10-01), Ward
patent: 3282345 (1966-11-01), Tripplehorn
patent: 3332133 (1967-07-01), Rye
patent: 3364998 (1968-01-01), Sable

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