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:
Jun. 27, 2006
Filed:
May. 25, 2005
Applicant:
James A. Simson, Meadows Place, TX (US);
Inventor:
James A. Simson, Meadows Place, TX (US);
Assignee:
Smith International, Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01);
U.S. Cl.
CPC ...
Abstract
Apparatus for cementing a string of tubulars in a borehole comprises an enclosure having a bore therethrough, an axially fixed sphere canister having a sphere aperture therethrough, a sphere valve member having a valve body disposed internally of said bore, and a sphere disposed in said sphere aperture, wherein said sphere valve member has a hold position closing said sphere aperture and a drop position opening said sphere aperture to release said sphere.