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. 05, 1991
Filed:
Feb. 05, 1990
Timothy D Burns, Sr, Duncan, OK (US);
Kenneth D Caskey, Duncan, OK (US);
Donald W Winslow, Duncan, OK (US);
Halliburton Company, Duncan, OK (US);
Abstract
An apparatus for locking a packer against premature actuation in a well bore. The locking apparatus includes a sleeve attached to a lower end of the packer and spring biased locking members adjacent to the sleeve. When in a locked position, lugs on the locking members engage a groove in the sleeve and prevent longitudinal movement of a mandrel in the packer with respect to the packer elements. When the locking apparatus enters a liner in the well bore, the locking members are biased radially inwardly, disengaging the lugs from the groove, so that the packer mandrel may be actuated and the packer set.