Clip-on electronic switching and hold devices for telephones

Details Clip-on electronic switching and hold devices for telephones Clip-on electronic switching and hold devices for telephones

1981-01-26

1983-05-03

Brown, Thomas W.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

179178, 200335, H01H 304, H01H 2180, H04M 106, H04M 121

Patent

active

043821618

ABSTRACT:
In a first preferred embodiment of the invention, a clip-on switching device is disclosed to prevent the placing of unauthorized outgoing calls from a (Touch Tone) telephone and/or to selectively switch an incoming call to an accessory (extension) telephone circuit. The switching device includes a housing which is particularly shaped to conform to the contour of the telephone cradle so as to be releasably connected therewithin. Positioned within the housing is a card having a control circuit thereon for selectively controlling the telephone circuitry. A unique spring-biased light emitting diode push-button switch is associated with the instant switching device, whereby to provide a visible signal, so as to indicate the operation of the telephone control circuit. In a second preferred embodiment of the invention, a telephone circuit hold device is provided which can be releasably connected to a (Touch Tone) telephone to permit the recipient of an incoming call to return his telephone handset to the telephone cradle whereby to temporarily place the existing call in a hold condition. The hold device includes an actuator assembly which is particularly structured for movement into physical contact with an associated circuit of the hold device, to selectively activate said circuit in order to place the telephone circuits in the hold condition.

REFERENCES:
patent: 2558661 (1951-06-01), Murray
patent: 3165597 (1965-01-01), Nordstroom et al.
patent: 4136270 (1979-01-01), Wernet et al.
patent: 4258232 (1981-03-01), Smith et al.
patent: 4268726 (1981-05-01), Chu

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