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. 01, 2022
Filed:
Mar. 12, 2021
Applicant:
Coil Solutions Inc., Alice, TX (US);
Inventor:
Michael Herrera, Alice, TX (US);
Assignee:
Coil Solutions, Inc., Alice, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 15/03 (2006.01);
U.S. Cl.
CPC ...
F16K 15/033 (2013.01); Y10T 137/7902 (2015.04);
Abstract
A flapper check valve employed to prevent flow up the work string while allowing flow down the work string and into the well is disclosed. The check valve is activated by a compression spring, which then acts on a ball which will further act on a cam profile attached to the back of a flapper. The apparatus causes the flapper to default to the closed position when the flow is stopped, regardless of the position of the valve, even when gravity is acting against the flapper. The compression spring also allows for an apparatus which possesses lower operating stresses on the spring.