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.:

US 8800590 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 12, 2014

Filed:

Mar. 30, 2011
Applicants:

Eric Wright Gilbertson, Cambridge, MA (US);

Franz Hover, Somerville, MA (US);

Eduardo Colina, San Ramon, CA (US);

Donald Bryan Freeman, Houston, TX (US);

Inventors:

Eric Wright Gilbertson, Cambridge, MA (US);

Franz Hover, Somerville, MA (US);

Eduardo Colina, San Ramon, CA (US);

Donald Bryan Freeman, Houston, TX (US);

Assignees:

Massachusetts Institute of Technology, Cambridge, MA (US);

Chevron U.S.A. Inc., San Ramon, GA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 31/00 (2006.01); E21B 21/10 (2006.01); E21B 43/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

In one embodiment, a valve comprising a valve body; an orifice disposed within the valve body; a fluid flow restraining member located at a first location of the orifice, the fluid flow restraining member pivotable between a closed position and an open position; an extending member connected to, and moveable in pivotable synchronization with, the fluid flow restraining member; and a shape memory alloy element attached to the extending member and the valve body, the shape memory alloy element causing a pivotal movement of the extending member between positions corresponding to the open and closed positions responsive to a change in temperature of the shape memory alloy element.


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