Telephone mouthpiece keyboard

Details Telephone mouthpiece keyboard Telephone mouthpiece keyboard

1975-12-29

1977-08-16

Cooper, William C.

179 2DP, H04M 150

Patent

active

040427935

ABSTRACT:
Apparatus and method for providing tone operating capability to a dial telephone is disclosed. The standard mouthpiece together with the original microphone of the dial telephone are removed. The present invention provides a replacement mouthpiece attached to the telephone in place of the standard mouthpiece. The replacement mouthpiece includes a relatively small microphone electrically coupled to the transmitter connections in the telephone and having a sound receiving element. A plurality of keyboard elements are located in the replacement mouthpiece generally around the sound receiving element of the microphone. The keyboard elements correspond to respective telephone operating digits and symbols and are adapted to be actuated by the user of the telephone.The replacement mouthpiece includes means for generating an output signal responsive to the actuated keyboard elements to operate the telephone. The generating means is electrically coupled to the transmitter connections when the replacement mouthpiece is attached to the telephone so that both the output of the microphone and the generated output signal are transmitted through the transmitter connections.

REFERENCES:
patent: 3080457 (1963-03-01), Jansson et al.
patent: 3180937 (1965-04-01), Moser
patent: 3299207 (1967-01-01), Cooke
patent: 3515806 (1970-06-01), Spraker
patent: 3597543 (1971-08-01), Mallebrein
patent: 3619507 (1971-11-01), Metz
patent: 3647972 (1972-03-01), Glover et al.
patent: 3676607 (1972-07-01), Nash et al.
patent: 3764746 (1973-10-01), Libby
patent: 3899638 (1975-08-01), Hahn
Wallet Terminal Keyboard with Acoustic Coupler, Davis, Jr. and Koepf, IBM Technical Disclosure Bulletin, vol. 10, No. 3, 8/1967.

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