Browse Prior Art Database

ELASTOMERIC KEYSWITCH

IP.com Disclosure Number: IPCOM000023905D
Original Publication Date: 1979-Apr-30
Included in the Prior Art Database: 2004-Apr-01

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a keyswitch which provides an indication of switch closure free of a hard-stop condition, That result is achieved by providing a conductive elastomer 2 between a moveable, metallic, spring-type contact 4 and a stationary member -6. The force-displacement characteristic of the keyswitch is substantially linear until the metallic, spring-type contact 4 meets the elastomer 2 with the force required to produce additional displacement, increasing greatly when the metallic spring-type contact 4 and elastomer 2 move together. The increased force needed to provide displacement of the spring-type switch after it meets the elastomer 2 provides an indication of switch closure free of a hard-stop condition,