Wristwatch with pressure sensor

Details Wristwatch with pressure sensor Wristwatch with pressure sensor

1988-02-29

1988-11-08

Miska, Vit W.

Horology: time measuring systems or devices

Combined with disparate device

Ambient condition detector

73754, G04B 4706, G01L 900

Patent

active

047837721

ABSTRACT:
An electronic diving wristwatch having a pressure sensing depth meter provided in a projection on a case of the watch without interferring with the existing crown, pushbuttons, etc. The depth meter has a piezoelectric type sensing element which produces electrical output in response to the water pressure. The output is converted to a water depth which is displayed in a digital display window of the watch.

REFERENCES:
patent: 3031591 (1962-04-01), Cary et al.
patent: 3198013 (1965-08-01), Erdely
patent: 3505808 (1970-04-01), Eschle
patent: 4107995 (1978-08-01), Ligman et al.
patent: 4109140 (1978-08-01), Etra
patent: 4188825 (1980-02-01), Farrar
patent: 4257112 (1981-03-01), Hubner
patent: 4257115 (1981-03-01), Hatuse et al.
patent: 4352168 (1982-09-01), Anderson
patent: 4413527 (1983-11-01), Sugiura et al.
patent: 4533256 (1985-08-01), Ostendorf

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