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. 10, 1989
Filed:
Feb. 08, 1988
Daniel G Shaw, Conroe, TX (US);
Billy MacCline, Houston, TX (US);
Other;
Abstract
A non-rotating fluid conductor for use with well apparatuses. A top drive with such a conductor and methods of using such a conductor and such a top drive. The conductor in one embodiment has a tripartite gland with outer, central, and inner gland members. The central gland member is movable in response to externally applied fluid pressure to bring into communication one or more passages through the conductor which includes passages through the outer member and inner member which are brought into communication when a passage on the central member aligns with the passages of the inner and outer members. Appropriate configuration of and biasing of the central gland member provides non-contacting of the central and inner members unless the conductor is in an energized mode.