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. 01, 2002
Filed:
Oct. 14, 2000
Applicant:
Inventor:
William N. Schoeffler, Lafayette, LA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3/406 ;
U.S. Cl.
CPC ...
E21B 3/406 ;
Abstract
The diverter valve is carried in a housing that serves as a length of drill string. A selector valve is actuated by selective mud flow control signals from the surface and can close to build internal pressure to move a poppet to open a by-pass channel. Positive resilient seals are carried inside a protective sleeve until the principal openings are closed, then the seal is deployed to stop leakage.