One-piece telephone hook switch operating mechanism

Details One-piece telephone hook switch operating mechanism One-piece telephone hook switch operating mechanism

1985-01-23

1987-09-22

Brown, Thomas W.

Telephonic communications

Terminal

Switch or switch actuator structure

379429, H04M 108

Patent

active

046960333

ABSTRACT:
A switch operating mechanism for use in a telephone instrument (for example, for operating a hook switch) has two arms (4 and 5) for projection from--and independent displacement with respect to--an outer surface of the instrument body (1). The arms (4 and 5) are arranged to co-operate with a switch actuating member (13) such that this member adopts a first position when both arms (4 and 5) are retracted with respect to the body (1), and a second position when one or both of the arms (4 and 5) is or are extended from the body (1). This mechanism is particularly advantageous for operating the hook switch in a one-piece telephone instrument because inadvertent depression of one of the arms (4 or 5) does not cause actuation of the hook switch.

REFERENCES:
patent: 2183744 (1939-12-01), Hubbell
patent: 2972021 (1961-02-01), Bryant et al.

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