Altitude monitor
US4453154A · kind A · utility
8Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1981 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Aug 14, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B7/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus to continuously monitor a preset altitude for a pilot of an aircraft. It senses a change in altitude and an audible as well as a visible alarm tells the pilot that he has deviated from his preset altitude by a given height. Increase in altitude is signaled by a high pitch tone and by a yellow light while a decrease in altitude is signaled by a low pitch tone and a red light. The invention can also be used to warn a small boat operator of a pressure drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.