Pickup device for picking up vibration transmitted through bones

Details Pickup device for picking up vibration transmitted through bones Pickup device for picking up vibration transmitted through bones

1984-04-27

1986-06-24

Rubinson, Gene Z.

Communications, electrical: acoustic wave systems and devices

Borehole testing

179107BC, 179110A, 367166, 367171, H04R 1702

Patent

active

045969035

ABSTRACT:
A pickup device for picking up vibration transmitted through bones or solid members in human, in which a piezoelectric element is mounted like a cantilever within a substantially rigid liquid-tight case filled with a viscous liquid in such a way that the free end of the piezoelectric element can vibrate with respect to the liquid-tight case. The viscosity of the viscous liquid ranges from 30 to 10,000 cs so that the sharpness of resonance of the piezoelectric element can be suitably suppressed.

REFERENCES:
patent: 2564562 (1951-08-01), Chess
patent: 2783449 (1957-02-01), Loofbourrow
patent: 3382481 (1958-05-01), Baker
patent: 4059819 (1977-11-01), Mollere
patent: 4150262 (1979-04-01), Ono

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