Tactile element and keyboard including the tactile element

Details Tactile element and keyboard including the tactile element Tactile element and keyboard including the tactile element

1978-11-17

1981-01-13

Rubinson, Gene Z.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159R, 200292, H01H 900

Patent

active

042451388

ABSTRACT:
A tactile snap-action element for use in keyboards, the element comprising an arcuately shaped invertible dome defining a first contour and a dome actuating protrusion defining a second contour, the protrusion being integral with the dome and being non-invertible. The element is operated by an actuation force which acts directly or indirectly through the non-inverting protrusion to invert the first contour and to provide tactile feedback. The keyboard includes a plurality of keys, each key comprising an element, a conductive circuit associated with the first contour and moveable with the inversion of the first contour to electrically contact a second conductive circuit associated with the element.

REFERENCES:
patent: 3932722 (1976-01-01), Obata et al.
patent: 4156802 (1979-05-01), Gilano et al.

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