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:
Feb. 26, 2008
Filed:
Jun. 14, 2004
Applicants:
Kenneth William Junk, Marshalltown, IA (US);
Christopher S. Metschke, Nevada, IA (US);
Inventors:
Kenneth William Junk, Marshalltown, IA (US);
Christopher S. Metschke, Nevada, IA (US);
Assignee:
Fisher Controls International, St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D 3/00 (2006.01); G05D 5/00 (2006.01); G05D 9/00 (2006.01); G05D 11/00 (2006.01); G05D 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus related to feedback control for electro-pneumatic control systems are disclosed. An example electro-pneumatic control system comprises an electro-pneumatic controller and a secondary pneumatic power stage coupled to the electro-pneumatic controller to provide a feedback signal to the electro-pneumatic controller.