Watch having a piezo electric buzzer mechanism

Details Watch having a piezo electric buzzer mechanism Watch having a piezo electric buzzer mechanism

1976-01-29

1977-01-25

Jackmon, E. S.

Electrical generator or motor structure

Dynamoelectric

Rotary

58 55, 58 575, 310 91, 340384E, 340388, G04C 2134, H01L 2720, G08B 302

Patent

active

040044092

ABSTRACT:
A watch includes a housing including an apertured sound transmitting housing portion. A diaphragm is carried by the housing. A piezo electric element is carried by one surface of the diaphragm and is oscillatable in response to electrical excitation. Excitation circuitry is connected between the piezo electrical element and a power source of a watch in producing an excitation signal to oscillate the piezo electric element. The diaphragm comprises an electrically insulative material. The excitation circuit is carried by the one surface of the diaphragm, thereby eliminating the need for additional components to carry the excitation circuit.

REFERENCES:
patent: 3788060 (1974-01-01), Kawamura
patent: 3800523 (1974-04-01), Yamazaki
patent: 3842585 (1974-10-01), Lupol
patent: 3940919 (1976-03-01), Yasuda et al.

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