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. 12, 1985
Filed:
Apr. 18, 1983
Applicant:
Inventor:
Charles E Mason, Fairmont, WV (US);
Assignee:
Conoco Inc., Ponca City, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 70 ; 166 77 ; 166153 ;
Abstract
A device for use during operation of a borehole survey probe or the like. The device is attachable to a flexible cable which in turn is connected to the survey probe, and the device includes an outer sealing or swab member and an interior valve. The valve and sealing member cooperate during pumping of the survey probe down through a conduit, and the valve opens during retrieval of the survey probe so that fluid in the conduit passes through the device as the survey probe is removed.