Waterproof acoustic alarm safety device embodied in a wristwatch

Details Waterproof acoustic alarm safety device embodied in a wristwatch Waterproof acoustic alarm safety device embodied in a wristwatch

1996-04-30

1998-03-10

Hofsass, Jeffery

Communications: electrical

Tactual indication

368245, 368250, 368291, H04B 336

Patent

active

057266263

ABSTRACT:
The invention concerns an acoustic alarm safety device comprising a case (2), a vibrating element (20) associated to a membrane (22) so as to make it vibrate, electrical means for providing a control signal to said vibrating element, and means (18) for actuating the electrical means.
This device is characterized in that it further comprises a pierced backcover (28) attached to said case (2) and arranged so as to protect it, and so as to allow a vibration of the set of the vibrating element-membrane (20, 22), said backcover being attached to said case in a manually removable manner, and a fitted ring (26) to which is attached said membrane (22), said ring (26) and said membrane (22) being associated to the case in such a way that the set ring-membrane (26, 22) ensures the waterproofness of the case (2).

REFERENCES:
patent: 3858389 (1975-01-01), Isuruishi
patent: 4045954 (1977-09-01), Ganter et al.
patent: 4167849 (1979-09-01), Takahashi
patent: 4330878 (1982-05-01), Nakamura
patent: 4374624 (1983-02-01), Murata
patent: 4403870 (1983-09-01), Thompson et al.
patent: 4459039 (1984-07-01), Klingenberg
patent: 5467325 (1995-11-01), Juillerat
Patent Abstracts of Japan, Sep. 6, 1980, vol. 4, No. 127 (P-26); & JP-A-55 080082, Jun. 16, 1980.

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