Physical quantity indicating device by a pointer
US4694410A · kind A · utility
9Cited by
8References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1985 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Jul 24, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C11/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for indicating a physical quantity such as depth in water by means of a pointer moving around a numbered face, using a C-MOS type computer for sampling the physical quantity at regular intervals and calculating the increment between the preceding value and the last value of the physical quantity. A pulse motor drives the pointer as many steps as are required for reaching the position at which the pointer indicates the last value of the physical quantity. The use of a sampling system and a pulse motor renders the device small enough so that it can be incorporated in a wrist watch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.