Bounce dampening system for switch actuators

Details Bounce dampening system for switch actuators Bounce dampening system for switch actuators

1976-12-22

1981-04-28

Wright, Jr., Ernest T.

Typewriting machines

Key-board or key lever-actuating mechanism

Including means generating a signal for type selecting or...

4004792, B41J 508

Patent

active

042642256

ABSTRACT:
A bounce dampening system reduces switch actuator bounce when the actuators are restored to their home position. Included are selection interposers, one of which is selectively driven to thereby effect motion of selection bails and corresponding switch actuators. A reverse interposer is simultaneously driven. A spring restores the reverse interposer after the actuation cycle thereby carrying the bails and switch actuators to their home position. The return spring and the mass of the reverse interposer prevents actuator bounce and insures a timely return of the actuators.

REFERENCES:
patent: 3189153 (1965-06-01), Barnard et al.
patent: 3422946 (1969-01-01), Rekewitz
patent: 3817366 (1974-06-01), Blum

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