Cantilever spring telephone hookswitch adapted for printed wirin

Details Cantilever spring telephone hookswitch adapted for printed wirin Cantilever spring telephone hookswitch adapted for printed wirin

1982-11-01

1985-05-14

Brown, Thomas W.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

179164, 200241, 200246, H01H 118, H04M 108

Patent

active

045174199

ABSTRACT:
A hookswitch mechanism for use in a telephone instrument utilizing a compound form cantilever spring fastened to a printed wiring card with circuit connections made to the printed wiring card. A contact engaging portion on the cantilever spring wipes across a contact located on the printed wiring card before disengaging the contact to insure a clean contact surface regardless of surrounding atmospheric conditions.

REFERENCES:
patent: 724478 (1903-04-01), Holmok
patent: 2089386 (1937-08-01), Lum
patent: 2671840 (1954-03-01), Sway
patent: 4268726 (1981-05-01), Chu

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