U.S. Utility Patent 5,298,706 (US5298706A)

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Provided by the ASK Keyboard Patents database

Patent diagrams depicting Key Tronic's membrane computer keyboard and improved key structure at rest (left) and pressed (right)

Applied 13th August 1992

Published 29th March 1994

Expired 13th August 2012

More informaion

Name	Membrane computer keyboard and improved key structure
Inventors	George P. English, Stephen S. Damitio
Assignees	Key Tronic
Description	An invention of a low-cost, low-part-count membrane keyboard using a keyswitch with a buckling rubber sleeve like tactile element. This patent is cited on the IBM ThinkPad 701-series (TrackWrite) and Power Series 800 keyboard assemblies.

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