Purging and expansion mechanism

Details Purging and expansion mechanism Purging and expansion mechanism

1981-01-14

1982-02-16

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Signal transducers

73644, 367104, 367171, 367172, 181402, 128660, H04R 102

Patent

active

043162711

ABSTRACT:
A housing for an electroacoustic transducer includes a filling or access port for introducing an inert liquid into the chamber defined by the housing. The access port includes a bubble trap and a vent for extracting gaseous bubbles from the fluid fill. The structure of the access port also comprises a substantially zero spring pressure expansion cavity for the fluid.

REFERENCES:
patent: 1463507 (1923-07-01), Hahnemann
patent: 4215585 (1980-08-01), Kunii et al.

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