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:
Nov. 26, 2019
Filed:
Dec. 14, 2016
Applicant:
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Inventor:
Pawel Czarnecki, Świdnica, PL;
Assignee:
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 15/03 (2006.01);
U.S. Cl.
CPC ...
F16K 15/035 (2013.01); F16K 15/033 (2013.01); Y10T 137/7839 (2015.04);
Abstract
A check valve comprises a valve housing defining an opening and a plurality of flapper elements each having a proximal end and a distal end, the flapper elements being pivotally mounted to the valve housing at their proximal ends for pivotal movement between a closed position, in which they block the flow of fluid through the opening and an open position in which they permit the flow of fluid through the opening. Each flapper element is generally triangular or trapezoidal in shape such that the flapper elements create a generally conical or frustoconical shape when in the closed position.