Joe D. Foster Jr.
Engineering at Algrave Ln, Spring, TX
License number
Louisiana PE.0010184
Issued Date
Feb 9, 1966
Category
Civil Engineer
Address
Address
16031 Algrave Ln, Spring, TX 77379
Professional information
Slip Gripping Mechanism
US Patent:
4711326, Dec 8, 1987
Filed:
Jun 20, 1986
Appl. No.:
6/876515
Inventors:
John L. Baugh - Huntsville TX
Joe Foster - Spring TX
Joe Foster - Spring TX
Assignee:
Hughes Tool Company - Houston TX
International Classification:
B65H 5910, E21B 2304, E21B 718
US Classification:
188 67
Abstract:
A slip gripping mechanism is shown for supporting a string of cylindrical conduit within the interior bore of a circumscribing conduit. An elongate body has a plurality of spaced longitudinal slots at one end. Vertically shiftable slips are carried in the slots by side edges which engage mating profiles formed in the slots. The slots form guideways for the slips for shifting the slips upwardly and outwardly relative to the body between a set position engaging the circumscribing conduit and an unset position. Each slip has an arcuate lower surface and a selected width to thickness ratio to allow controlled flexing of the slip in the direction of the circumscribing conduit as the slip moves to the set position.