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. 11, 2001
Filed:
Feb. 01, 1999
Applicant:
Inventor:
David L. Malone, Sugar Land, TX (US);
Assignee:
Schlumberger Technology Corp, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3/406 ;
U.S. Cl.
CPC ...
E21B 3/406 ;
Abstract
A valve assembly includes a seat having at least an opening and a first surface. A cover has a contact surface that is slideably and sealingly engaged to the first surface of the seat to form a seal when the contact surface completely covers the at least one opening.