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:
Sep. 30, 2014
Filed:
Oct. 20, 2011
Thomas Andrew Pesek, Ankeny, IA (US);
Brian Joseph Burlage, Marshalltown, IA (US);
Carter Bill Cartwright, Ames, IA (US);
Clyde T. Eisenbeis, Marshalltown, IA (US);
Thomas Andrew Pesek, Ankeny, IA (US);
Brian Joseph Burlage, Marshalltown, IA (US);
Carter Bill Cartwright, Ames, IA (US);
Clyde T. Eisenbeis, Marshalltown, IA (US);
Fisher Controls International, LLC, Marshalltown, IA (US);
Abstract
Multiple-contact switches are disclosed. An example multiple-contact switch disclosed herein includes a double throw switch having a common terminal, a first throw terminal, and a second throw terminal, the common terminal being coupled to a reference; a first throw circuit coupled to the first throw terminal, the first throw circuit to output an open signal to a process control device when the common terminal is substantially in contact with one of the first throw terminal or the second throw terminal; and a second throw circuit coupled to the second throw terminal, the second throw circuit to cause the first throw circuit to output a close signal to the process control device when the common terminal is substantially in contact with the other one of the first throw terminal or the second throw contact terminal, wherein at least one of the open signal or the close signal corresponds to the reference.