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:
Oct. 03, 1989
Filed:
Sep. 07, 1988
Jerry L Haley, Richardson, TX (US);
Weldon H Barber, Wylie, TX (US);
Kavin J Morris, Plano, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
A wellbore fluid sampling apparatus includes an elongated barrel member having a chamber formed by a through flow passage opening from the bottom of the barrel member to a port in the barrel member. Spaced apart ball type valve closure members are connected to an actuating linkage comprising a rack and pinion mechanism connected to respective ones of the closure members. A cocking and retaining mechanism includes an actuating rod and a collet sleeve connected to the rack member and biased by a coil spring to move the rack member to simultaneously close both valves upon release of the collet sleeve from gripping engagement with the wall of the bore in a body member of the apparatus. In an alternate embodiment, the actuating member includes a part gripped by a stationary collet which may release the part upon movement of a sliding sleeve which is actuatable at will. The actuating member is connected to elongated cable traces which are operable to move the valves between open and closed positions. The ball valves include lateral ports for evacuating the closure member passages in the valve closed positions.