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:
Feb. 17, 2015
Filed:
May. 24, 2011
Brad Groesbeck, Houston, TX (US);
Jeffrey Arcement, Houma, LA (US);
John C. Jordan, Houston, TX (US);
James G. Martens, Spring, TX (US);
Brad Groesbeck, Houston, TX (US);
Jeffrey Arcement, Houma, LA (US);
John C. Jordan, Houston, TX (US);
James G. Martens, Spring, TX (US);
Blackhawk Specialty Tools, LLC, Houston, TX (US);
Abstract
An auto-fill type float collar assembly is provided. The float collar assembly of the present invention has at least one curved flapper-style valve, preferably constructed of composite, non-metallic material. Each flapper of the present invention has a substantially 90° range of motion, and is closed via a torsion spring. Each flapper is held in the open (or 'auto-fill'), position via an external shifting mechanism passing around, rather than through, the central flow bore of the assembly. A floatable actuation ball can be run with the tool, or pumped downhole, in order to selectively actuate the assembly and close the flappers when desired.