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:
Apr. 26, 2011
Filed:
Nov. 20, 2007
Applicants:
John Laplante, Bow, NH (US);
William T. Larkins, Manchester, NH (US);
Inventors:
John LaPlante, Bow, NH (US);
William T. Larkins, Manchester, NH (US);
Assignee:
Fourth Floor Associates, Inc., Manchester, NH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system and method for controlling an electrically controlled pressure relief valve may use a soft position control loop to control the position of the valve. A pressure relief valve may also include a modified orifice shape to improve stability, to uniformly distribute the effective bandwidth over the valve operating range, and to provide a tunable default mode.