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. 17, 2013
Filed:
Feb. 16, 2011
Jonathan Macrae, Houston, TX (US);
Bulent Finci, Sugar Land, TX (US);
Jaime Pedraza, Cypress, TX (US);
Mark Schiel, Magnolia, TX (US);
Robert Crispin Porter, Cypress, TX (US);
Jonathan Macrae, Houston, TX (US);
Bulent Finci, Sugar Land, TX (US);
Jaime Pedraza, Cypress, TX (US);
Mark Schiel, Magnolia, TX (US);
Robert Crispin Porter, Cypress, TX (US);
ThruBit, B.V., Rijswijk, NL;
Abstract
A flapper valve includes a valve body, a valve cover pivotally coupled to the valve body at a hinge between an open and closed position, and a biasing element biasing the valve cover to the closed position. The valve cover includes an interior face comprising a sealing surface and a boss including a face surrounded by a beveled edge joining the boss with the sealing surface.