Wristwatch with pressure sensor
US4783772A · kind A · utility
141Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B47/066
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.