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:
Dec. 04, 2018
Filed:
Jan. 06, 2017
Applicant:
Dunan Microstaq, Inc., Austin, TX (US);
Inventors:
E. Nelson Fuller, Manchester, MI (US);
Parthiban Arunasalam, Austin, TX (US);
Joe A. Ojeda, Austin, TX (US);
Gengxun K. Gurley, Hutto, TX (US);
Chen Yang, Austin, TX (US);
Jennifer O'Keefe, Austin, TX (US);
Assignee:
DunAn Microstaq, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 41/06 (2006.01);
U.S. Cl.
CPC ...
F25B 41/062 (2013.01); F25B 2341/06 (2013.01); F25B 2600/2513 (2013.01);
Abstract
A two-stage proportional control valve configured for use in a fluid system includes a valve body having a longitudinally extending valve body bore formed therethrough. A first stage microvalve is mounted within the valve body bore, and a second stage spool assembly is mounted within the valve body bore downstream of the microvalve. The second stage spool assembly includes a sleeve and a spool slidably mounted within the sleeve.