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. 14, 2008
Filed:
Jun. 01, 2005
Applicant:
Richard Wayne Adams, Houston, TX (US);
Inventor:
Richard Wayne Adams, Houston, TX (US);
Assignee:
TIW Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01);
U.S. Cl.
CPC ...
Abstract
The circulation toolfor use downhole in a well includes a housinghaving one or more bypass portsfor circulation between a borein the housing and an annulus surrounding the housing. Sleeveis axially movable within the housing, and axially spaced sealsseal between the sleeve and the housing when the sleeve is in the closed position. A flapperis pivotally mounted to the sleeve, and includes a seat about a central borein the flapper for engagement with the plug. A stopprevents pivoting of the flapper to an open position until the sleeve has moved axially and the seals seal between the sleeve and the housing.