Wells – Processes – Freeing stuck object – grappling or fishing in well
Reexamination Certificate
2006-08-29
2006-08-29
Neuder, William P. (Department: 3672)
Wells
Processes
Freeing stuck object, grappling or fishing in well
C166S098000, C294S086240
Reexamination Certificate
active
07096951
ABSTRACT:
A fishing tool apparatus for retrieving an object from within a well bore, wherein the object has an opening for receiving the apparatus, comprises a support rod, an expandable sleeve, and a biasing means. The expandable sleeve may be externally threaded for engaging the object, is slidably mounted on the support rod, and is movable from a narrow diameter insertion position to an expanded engaging position. Once inserted, the biasing means biases the expandable sleeve to the expanded engaging position, thus facilitating engagement. Thus the expandable sleeve is inserted and engaged without applying torque thereto.
REFERENCES:
patent: 430919 (1890-06-01), Campbell et al.
patent: 1497541 (1924-06-01), Camblin
patent: 2211973 (1940-08-01), Gauthier
patent: 2243419 (1941-05-01), Festervan et al.
patent: 2633808 (1953-04-01), Webber
patent: 3990509 (1976-11-01), Hedgecock et al.
patent: 4184504 (1980-01-01), Carmichael et al.
patent: 4312406 (1982-01-01), McLaurin et al.
patent: 4862957 (1989-09-01), Scranton
patent: 5242201 (1993-09-01), Beeman
patent: 5549474 (1996-08-01), Cohen
patent: 5618169 (1997-04-01), Smith
patent: 5639135 (1997-06-01), Beeman
patent: 5947202 (1999-09-01), Gazewood
patent: 6186237 (2001-02-01), Voss, Jr. et al.
McAfee & Taft
Neuder William P.
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