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. 25, 2025
Filed:
Feb. 10, 2023
Applicants:
David A. Borkholder, Canandaigua, NY (US);
Farzad Forouzandeh, Pacifica, CA (US);
Inventors:
David A. Borkholder, Canandaigua, NY (US);
Farzad Forouzandeh, Pacifica, CA (US);
Assignee:
Rochester Institute of Technology, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 43/04 (2006.01); F04B 19/00 (2006.01); F16K 15/14 (2006.01); F16K 99/00 (2006.01);
U.S. Cl.
CPC ...
F04B 43/043 (2013.01); F04B 19/006 (2013.01); F16K 15/1441 (2021.08); F16K 99/0015 (2013.01);
Abstract
A closed leak-free, diffusion-blocking one-way check valve is composed of a substrate having a flow passage through the substrate, the flow passage has a sealing surface between the substrate and a membrane preventing flow through the flow passage. A thin film having internal stress is disposed on the membrane which induces deformation of the membrane biasing the membrane resulting in the sealing surface in a closed orientation. A method for fabrication and pump utilizing the check valve are disclosed.