Multiple-contact switches

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United States of America Patent

PATENT NO 8847439
APP PUB NO 20130099593A1
SERIAL NO

13277736

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
FISHER CONTROLS INTERNATIONAL LLC205 S CENTER STREET MARSHALLTOWN IA 50158

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Burlage, Brian Joseph Marshalltown, US 1 1
Cartwright, Carter Bill Ames, US 2 2
Eisenbeis, Clyde T Marshalltown, US 11 357
Pesek, Thomas Andrew Ankeny, US 1 1

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