Method of making diaphragm of optimized stress and strain distri

Details Method of making diaphragm of optimized stress and strain distri Method of making diaphragm of optimized stress and strain distri

1976-12-27

1979-01-09

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Electrical device making

156625, 156659, 338 4, H01C 1702

Patent

active

041331001

ABSTRACT:
A transducer diaphragm comprising a diaphragm plate with a predetermined pattern of recesses and mesas formed by a chemical etching method to change and/or isolate the expansion and contraction areas of the plate under pressure. In the illustrated embodiment, the pattern includes a central depression on the rearward face including peripheral cutouts extending outwardly from the central depression to receive a strain gauge, thereby positioning the location of the maximum compression amplitude of the diaphragm to be under the gauge.

REFERENCES:
patent: 3325761 (1967-06-01), McLellan
patent: 3341794 (1967-09-01), Stedman
patent: 3739315 (1973-06-01), Kurtz et al.
patent: 3909924 (1975-10-01), Vindasius et al.
patent: 3912563 (1975-10-01), Tomioka et al.
patent: 3968466 (1976-07-01), Nakamura et al.
patent: 4016644 (1977-04-01), Kurtz

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