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:
Mar. 13, 2018
Filed:
Dec. 19, 2014
Schlumberger Technology Corporation, Sugar Land, TX (US);
Robert Kelly, Houston, TX (US);
Karidja Louise-Olivia Djibo, Houston, TX (US);
Kent D. Harms, Richmond, TX (US);
Walter Luckett, Sugar Land, TX (US);
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Abstract
A rotary check valve is disclosed having sealing surfaces between two sealing members that engage with a rotating shearing motion. The rotating shearing motion may shear debris between the sealing members and minimize or eliminate blockage of fluid passageways in the sealing members. In a closed position, the upper sealing member and lower sealing member are rotated such that fluid passageways in the upper sealing member and fluid passageways in the lower sealing member are not aligned and blocked by the sealing surfaces. The sealing members of the rotary check valve may be biased to a closed position via a spring.