Level sensing apparatus providing output signals compatible with digital apparatus
US4603484A · kind A · utility
Inventor
Key dates
| Filing date | Mar 4, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Mar 4, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for determining a deviation of a body from a horizontal plane is disclosed. Attached to the body is a curved surface with a liquid conducting material moving freely thereon. Associated with the surface are electrodes at preselected positions and a surface at ground potential. As the liquid conducting material moves on the inner portion of the curved surface, the liquid conducting material provides a conducting path between the electrodes providing a resulting electrical activity such as a current flow. The electrical coupling of the electrodes is identified and the electrode(s) so activated identify a position on the curved surface and consequently when the curvature of the surface is known, a deviation from the horizontal plane can be determined. The position of the electrodes and the electrical structure thereof provide suitable signals for use by digital signal apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.