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:
Jul. 18, 2006
Filed:
Jan. 13, 2004
Richard E. Schnell, Oswego, IL (US);
Eric Oden Cummings, Lexington, SC (US);
Mark Entwistle, Burnley, GB;
Richard E. Schnell, Oswego, IL (US);
Eric Oden Cummings, Lexington, SC (US);
Mark Entwistle, Burnley, GB;
Ross Operating Valve Company, Troy, MI (US);
Abstract
The redundant valve systemof the preferred embodiments includes a first valve unit, a second valve unit, a third valve unit, a first diagnostic device, a second diagnostic device, and a control unit. The third valve unit has a first position that allows fluid flow toward the first valve unit and a second position that allows fluid flow toward the second valve unit. The first diagnostic device and the second diagnostic device are adapted to detect the presence of a fault in the first valve unit and the second valve unit, respectively. The control unit is coupled to the third valve unit and adapted to cycle between a first operation mode that requests the first position for the third valve unit and a second operation mode that requests the second position for the third valve unit.