Tactile feedback keyboard switch assembly and actuator

Details Tactile feedback keyboard switch assembly and actuator Tactile feedback keyboard switch assembly and actuator

1975-06-11

1976-07-13

Scott, James R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 5A, 200340, H01H 1314, H01H 317

Patent

active

039696006

ABSTRACT:
The disclosure relates generally to key assemblies employed in electrical switch operating keyboard devices and more particularly to the improved assembly of parts forming an individual depressible key on such a keyboard. Each key assembly is comprised of parts cooperatively interfitting to provide both audio and tactile feedback for the keyboard as well as a bifurcated electrical contact provision. Included in each key assembly is a spring having a buckling beam member with two end supports that will resist a key depression, a hermetic rubber pad that will also resist key depression and a pair of spring straddling members depending from the key assembly for conveying forces employed to depress the key to the switch associated with the assembly to effect closure of the same as well as for substantially reducing if not eliminating a detrimental contact bounce encountered in the operation of such assemblies. The force transmitting pair of depending members cooperate with the straddle spring to provide a rocker or teetering motion in conjunction with the desired bifurcated action for assuring closure of the contacts.

REFERENCES:
patent: 3582594 (1971-06-01), Twyford
patent: 3668356 (1972-06-01), Kekas
patent: 3829646 (1974-08-01), Lorteije et al.
patent: 3856998 (1974-12-01), Sims, Jr.

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