Title: Swab

Abstract: This patent application discloses a swab mandrel having thereon a swab with reinforcing wires imbedded at approximately the mid-point of the wall of the swab for a substantial distance to permit the swab to have fluid film lubrication with the tubing in which the wires at the upper end of the swab are approximately at the outer diameter of the swab and are sled shaped to bridge couplings in a tubing. The swab further has a restraining ring around the lower end thereof which supports the body of resilient material and restrains outward movement but is spaced from the wires to permit the wires to move radially outward a limited distance. To insure that a proper support is provided for the swab both above and below a special two piece support is provided for engagement with the bottom of the swab and with the top of the reinforcing wires.

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Inventors: Webber, Jack C. (Houston, TX, US)

Application Number: 925987
Filing Date: 1978-07-19
Publication_date: 1980-02-26
Assignee:
Primary Class(es): 166/202 92/254, 417/555.2
Other Classes:
US Patent Ref:

2456551	Dec, 1948	Wilson	92/241.
2723721	Nov, 1955	Corsette	417/555.
2887347	May, 1959	Losey	106/202.
2965422	Dec, 1960	Wilson	92/241.
3677143	Jul, 1972	Crickner	92/241.
4099451	Jul, 1978	Blackwell	166/202.

Other Refs:
Primary Examiner: Pate, III, William F.
Assistant Examiner:
Attorney: Vinson & Elkins