The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1993
Filed:
Sep. 03, 1991
Applicant:
Inventor:
William L Fontenot, Houston, TX (US);
Assignee:
Cooper Industries, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166367 ; 277 343 ;
Abstract
An improved riser telescoping joint including a riser mandrel, an annular resilient packer carried by the riser mandrel, a telescoping mandrel positioned within and movable with respect to said riser mandrel, a line connected to the riser mandrel for delivering fluid under a predetermined pressure against the exterior of said packer to cuase it to seal against the exertion of said telescoping mandrel and a restricted flow passage communicating from the exterior to the interior of the packer to supply a limited amount of said pressure fluid as a lubricant between the interior of the packer and the exterior of the telescoping mandrel.