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. 26, 1978
Filed:
Jul. 25, 1977
Chudleigh B Cochran, Houston, TX (US);
Brown Oil Tools, Inc., Houston, TX (US);
Abstract
A well tool for use in a tubular well conduit comprising a tool body including at least one radially extendable element for engaging the well conduit, and first and second tool body portions. The tool body portions are operatively associated with the radially extendable element and relatively movable longitudinally toward each other to extend the radially extendable element. Such movement is effected by longitudinal movement of a mandrel assembly which is engageable with the second tool body portion whereby they together form an actuator. The tool further comprises lock means cooperative between the actuator and the first tool body portion to limit movement of the tool body portions away from each other thereby locking the radially extendable element in its extended position. Tightening means associated with the lock means tightens the lock means responsive to fluid pressure acting in a direction opposite the direction of movement of the actuator during setting. The same or similar pressure responsive means may also serve to resist movement of the first tool body portion during setting.