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:
Dec. 29, 1987
Filed:
Dec. 09, 1986
Sidney K Smith, Jr, Huntsville, TX (US);
Hughes Tool Company, Houston, TX (US);
Abstract
A latch and retrieving assembly is shown for use with a well tool having an axial bore which includes an external landing shoulder and an annular latch recess which is spaced below the landing shoulder. The assembly includes a mandrel which is inserted in to the bore of the well tool. The mandrel has a lower abutment and a collet member carried about the mandrel above the abutment. The collet member includes a carrier ring which is seatable on the shoulder and a plurality of fingers which depend from the carrier ring and which terminate in radially enlarged tips which are disposed in registration with the recess when the carrier ring is seated on the landing shoulder. The tips cooperate with the lower abutment to latch into and to be released from the recess respectively in response to downward movement of the mandrel. A special profile formed on the mandrel lower abutment provides latching engagement and subsequent release of the assembly upon downward movement of the mandrel relative to the collet.