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:
Mar. 21, 1989
Filed:
Sep. 23, 1987
Mark L Wyatt, Tulsa, OK (US);
Andrew J Tucker, Tulsa, OK (US);
Arrow Oil Tools, Inc., Tulsa, OK (US);
Abstract
A retractable slip assembly for downhole oil tools such as packers and anchors which permits retrieval of the tool with a minimum of force and without damaging the casing or tool. The slip assembly includes a plurality of slip elements adapted to engage a setting cone which moves the slips outwardly into engagement with the casing wall. The individual slip elements travel within slip windows formed in an outer sleeve. In addition to guiding the slips, the slip windows facilitate retraction of the slip elements. In order to reduce the force necessary to release the slip assemblies, the engaging edges of the slip elements and the slip windows are provided with a cooperating angle corresponding to the slope of the setting cone and slip underside. The reduced force necessary to retract the slips allows the use of upper and lower slip assemblies in conjunction with a packer assembly.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile