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:
May. 12, 1987
Filed:
Mar. 03, 1986
Roger A Weinberg, Houston, TX (US);
Baker Oil Tools, Inc., Orange, CA (US);
Abstract
A removable bushing for slidably and sealably supporting a mandrel within the bore of a well conduit comprises an outer tubular body insertable in the well conduit in series relation. Said outer tubular body defines an internal seal bore and an annular latching recess adjacent the seal bore. An internal tubular body assembly is telescopically inserted in the well conduit and carries external seals engagable with the seal bore and an internal seal stack. The internal tubular body further comprises a collet having a plurality of peripherally spaced locking arms terminating in locking heads which are engagable with the annular recess in the outer tubular body. A mandrel is inserted within the bore of the outer tubular body in sealing engagement with the internal seal stack. A plurality of peripherally spaced locking lugs are carried by a sleeve on the exterior of the mandrel and are positioned by further downward movement of the mandrel beneath the locking heads of the collet arms, thus locking the collet heads in position. Upward movement of the mandrel will produce a displacement of the locking heads of the collet from engagement with the annular recess in the outer tubular body assembly and permit the concurrent removal of the mandrel and the inner tubular body assembly from the well.