Heated window with a moisture sensor having a high impedance
US4127763A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1976 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | Jun 2, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S15/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A window has a heating grid and a moisture sensor formed thereon for connection to a detector which automatically controls the heating. The sensor has an output terminal and another terminal connected to a heating conductor, the sensor being positioned outwardly of the heating grid with the area of the sensor including the output terminal lying in the heating zone. Advantageously the outer limit of the sensor is closely adjacent the outer limit of the heating zone. The output terminal is positioned between the outward limit of the sensor electrodes and the boundary heating conductor. A shield electrode connected to the heating conductor may be provided. The sensor may be located between a pair of heating conductors adjacent a heating grid collector with one electrode connected to the conductors. For deep windows, the sensor may be located in an offset branched section of a boundary heating conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.