Photo-optical switch apparatus

Details Photo-optical switch apparatus Photo-optical switch apparatus

1982-02-09

1984-10-23

Groody, James J.

Communications: electrical

Audible indication

Percussion-type sound producer

200340, 250229, 340407, G06F 302, H01H 312, H01H 1300, H01H 1314

Patent

active

044791119

ABSTRACT:
Photo-optical switch apparatus provided with integral, positive, mechanical, tacticle feedback mechanism wherein a horizontally disposed biasing spring carried by a light blocking and unblocking element or member is arranged to engage and be angularly deflected by an angularly projecting tang carried by an insert structure adapted for insertion within a keyboard matrix assembly.

REFERENCES:
patent: 3773997 (1973-11-01), Evans
patent: 4034177 (1977-07-01), Sims
patent: 4088855 (1979-05-01), Emery
patent: 4301345 (1981-11-01), Balta
patent: 4348122 (1982-09-01), Balta
patent: 4418252 (1983-11-01), Daigle

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