CONTACTLESS PRESSURE SENSITIVE SEMICONDUCTOR SWITCH

• US 3,611,068 A
• Filed: 05/20/1970
• Issued: 10/05/1971
• Est. Priority Date: 05/20/1970
• Status: Expired due to Term

• Current Assignee: Takashi Fujita
• Original Assignee: Takashi Fujita
• Inventors: Fujita, Takashi
• Primary Examiner(s): Huckert, John W.
• Assistant Examiner(s): James, Andrew J.
• Application Number:
  US05/037,491
• Time in Patent Office: 503 Days
• Field of Search: 179/110 317/234,235,1,4,26 29/587,588,589
• US Class Current: 338/2
• CPC Class Codes: H01C 10/10 adjustable by mechanical pressure or force
• CPC Class Codes: H01L 29/00 Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor H01L31/00 - H01L33/00, H10K10/00, H10N take precedence; details other than of semiconductor bodies or of electrodes thereof H01L23/00; devices consisting of a plurality of solid state components formed in or on a common substrate H01L27/00

Abstract

A contactless switching device in which the conventional switch contacts are replaced by a semiconductor element whose resistivity is remarkably reduced when a pressure is imposed thereon.

Claims

2. A contactless switching device according to claim 1 wherein said manually operated means comprises lever means pivotally mounted in said housing, said spring means being mounted between said electrode at the other side of said element and one end of said lever means, and actuating means slidable alonG said lever means to cause said lever means to pivot and thereby apply stress to said element through said spring means.