Plugs, receptacles and hearing aids

Details Plugs, receptacles and hearing aids Plugs, receptacles and hearing aids

1983-04-18

1985-09-03

Rubinson, Gene Z.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381 69, 339 17F, 339 32R, 179107H, H04R 2500

Patent

active

045394393

ABSTRACT:
A connecting cord has a plug at each end. Either such plug may be plugged into the receptacle of a hearing aid and the other plug may be plugged into an external microphone. The contacts of each plug are connected in a different circuit configuration to the conductors of the cord so that when one plug is plugged into the receptacle, the internal hearing aid microphone is shorted out, and when the other plug is plugged into the receptacle, both microphones operate in parallel. The plug contacts are formed of printed circuit board and each plug has a rocker with a hooked top which engages a slot in the receptacle to prevent the inadvertent movement of the plug out of the receptacle. Other plug internal circuit configurations allow connection of other signalling systems to the hearing aid.

REFERENCES:
patent: 2673898 (1954-03-01), Reichert
patent: 2848538 (1958-08-01), Randolph
patent: 3393392 (1968-07-01), Shelley
patent: 3605060 (1971-09-01), Pragger
patent: 4134045 (1979-01-01), Quin
patent: 4258969 (1981-03-01), Stallard
patent: 4405190 (1983-09-01), Schroeder
A. W. Nortrop, et al, "Isolation Circuit Tool," IBM Tech. Discl. Bull., vol. 3, No. 1, Jun. 1960, p. 7.

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