Timepiece with sound generator

Details Timepiece with sound generator Timepiece with sound generator

2011-08-09

2011-08-09

Ni, Suhan (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Detail of mechanical vibration coupling to transducer

C381S334000, C381S336000, C381S365000

Reexamination Certificate

active

07995776

ABSTRACT:
A timepiece includes a casing having a casing interior having a viewer's side provided with a viewing opening, a base side provided with a sound aperture, and an annular surface surrounding the sound aperture. A membrane extending over the sound aperture closes the base side of the casing interior, the membrane having a circumferential region in sealed connection with the annular surface. A tensioning device maintains the membrane at a desired tension in the radial direction. A vibration generator arranged in the casing interior produces a sound whose frequency can be adjusted by adjusting the tension of the membrane.

REFERENCES:
patent: 384412 (1888-06-01), Bapst et al.
patent: 2644294 (1953-07-01), Ditisheim
patent: 3879931 (1975-04-01), Yasuda et al.
patent: 4068461 (1978-01-01), Fassett et al.
patent: 4216650 (1980-08-01), Hara et al.
patent: 4250573 (1981-02-01), Saito
patent: 323231 (1957-08-01), None
patent: 324394 (1957-10-01), None
patent: 920 958 (1954-12-01), None
patent: 902 479 (1957-03-01), None
European Search Report dated May 21, 2008 for corresponding European application 06022988.7-1240.
Examination Report dated Jan. 12, 2007 issued for the corresponding German Application No. 10 2005 058 322.9-31.

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