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. 27, 2018
Filed:
Sep. 16, 2016
Applicants:
Rudolf H. Hendel, Summit, NJ (US);
Catherine G. Lin-hendel, Summit, NJ (US);
Inventors:
Rudolf H. Hendel, Summit, NJ (US);
Catherine G. Lin-Hendel, Summit, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/08 (2006.01); E21B 33/064 (2006.01); E21B 43/01 (2006.01); E21B 33/035 (2006.01); E21B 34/06 (2006.01); E21B 21/10 (2006.01); F16K 15/03 (2006.01);
U.S. Cl.
CPC ...
E21B 34/08 (2013.01); E21B 21/10 (2013.01); E21B 33/035 (2013.01); E21B 33/064 (2013.01); E21B 34/06 (2013.01); E21B 43/0122 (2013.01); F16K 15/033 (2013.01);
Abstract
A system for enhancing well safety comprises a pipe equipped with a one-way check valve preventing hydrocarbon up flow through the well casing pipe. The one-way check valve opens in response to encountering downward pressure from downward insertion of fluid or objects moving downward towards a well reservoir. The one-way check valve closes in response to encountering upward pressure from fluid from the well reservoir.