Surface mount electromagnetic sound producing device

Details Surface mount electromagnetic sound producing device Surface mount electromagnetic sound producing device

1997-09-25

2000-08-22

Kuntz, Curtis A.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Mounting or support feature of housed loudspeaker

381417, 381398, 381355, H04R 2500

Patent

active

061084328

ABSTRACT:
A casing is provided to be mounted on a printed circuit. The casing has a lower casing and an upper casing. An actuator is provided in the casing, and an armature is supported in the casing so as to be vibrated by the actuator. A sound emanating hole is formed in a peripheral side wall of the upper casing, and a pressure releasing hole is formed in a peripheral side wall of the lower casing.

REFERENCES:
patent: 2293078 (1942-12-01), Proctor
patent: 3560667 (1971-02-01), Carlson
patent: 3742156 (1973-06-01), Broersma
patent: 3935398 (1976-01-01), Carlson et al.
patent: 4009355 (1977-02-01), Poradowski
patent: 4308431 (1981-12-01), Hanbicki
patent: 4504703 (1985-03-01), Schneiter et al.
patent: 4578808 (1986-03-01), West
patent: 4843628 (1989-06-01), Hofer
patent: 5085628 (1992-02-01), Engebretson

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