Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1978-02-14
1978-11-07
Cooper, William C.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
179 90K, 179167, 179178, 179179, 200159A, H04M 103, H04M 123
Patent
active
041247850
ABSTRACT:
A telephone set includes a unified internal chassis having individual cup portions for accommodating a transmitter and receiver. Each of these transducers is captured within its associated cup portion by a retaining member that is disposed about the perimeter of the transducer and the perimeter of the cup portion. A dial, which is mechanically and electrically separate from telephone network circuitry contained on a printed circuit, is secured to the chassis by fasteners, and the securing of the dial to the chassis serves to electrically connect the dial to the proper conductive paths of the speech network circuitry. The printed circuit and the components soldered thereto are only supported on the chassis by means of fastening devices and therefore the printed circuit is also readily disassembled from the chassis.
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F. Brandstetter and H. Greska; "Seimens Masterset III, A New Desk Telephone"; Seimens Review No. 5; May 1974; pp. 201-203.
Seretny Stanley E.
Webb Carl E.
Bell Telephone Laboratories Incorporated
Cooper William C.
Myers Randall P.
Newman Harry L.
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