Textiles: ironing or smoothing
Patent
1985-02-19
1987-01-06
Rubinson, Gene Z.
Textiles: ironing or smoothing
179179, 381 686, H04R 2502
Patent
active
046348158
ABSTRACT:
A face plate includes a passage for receiving a button cell. Disposed on the back of the face plate is a mounting plate. Between the mounting plate and the face plate, the edge of a diaphragm is gripped, the center part of which bulges resiliently outward. By means of pressure on the center part of the diaphragm, a circuit is closed. A cover having a center opening is hinged to the face plate. Through the opening there extends a pushbutton which is rotatable within limits relative to the cover and axially displaceable. Resting against the inside of the pushbutton is an annular contact element which is rotatingly integral therewith and has a contact tongue connected via a crosspiece. By rotating the pushbutton, the contact tongue can be brought into contact with a contact member disposed in a groove in the cover for turning on the hearing aid. By pressing the pushbutton, the button cell is axially displaced inwardly against the return force of the outwardly bulging portion of the diaphragm, and the mentioned circuit is closed. The hearing aid thus has only a single, relatively large operating element by means of which it can be turned on and off, and the volume controlled.
REFERENCES:
patent: 2267364 (1941-12-01), Blount
patent: 2967922 (1941-01-01), Dressel
patent: 3852540 (1974-12-01), Diethelm
patent: 4304973 (1981-12-01), Fenelle et al.
patent: 4539440 (1985-09-01), Sciarra
Byrd Danita R.
Gfeller AG
Rubinson Gene Z.
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