Proximity sensor for hostile environments
US4906926A · kind A · utility
10Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 1988 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | May 16, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S294/907
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Proximity sensors for detecting the presence of metal objects such as sheet metal workpieces within workpiece engaging devices such as grippers and shovels. The proximity sensors are jacketed in a stainless steel casing, making them rugged and resistant to impact damage. Monitor circuits are used with the sensor which enable the devices to sense objects through their metal casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.