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:
Jul. 22, 1986
Filed:
Oct. 20, 1982
Flint R George, Katy, TX (US);
Geo Vann, Inc., Houston, TX (US);
Abstract
A releasable coupling has opposite ends adpated to be connected into a tool string or tubing string and run downhole into a borehole. A sealing member is passed down through the tubing string and allowed to become seated within the axial passageway of the releasable coupling. Pressure is applied through the axial passageway above the sealing member whereupon the differential in pressure effected across the sealing member is also effected across a slidable piston reciprocatingly received within the releasable coupling. The piston moves into a position which enables a male member to be released and separated from a female member. When the male and female members are released and separated from one another, the lower part of the tubing string is disconnected from the upper part of the tubing string.