Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Thomas C. Richards0
Date of Patent
July 1, 2008
0Patent Application Number
114117130
Date Filed
April 26, 2006
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An electronic proximity switch employs two oscillators coupled through two electrical paths, one associated with an antenna serving as a proximity switch sensor. Absorption by an object near the antenna changes the coupling between the oscillators producing a dramatic phase shift that may be detected and used for switching purposes.
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