Operating status of a shutter for electromagnetic energy curing systems
US7267456B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2005 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Nov 25, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B3/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and system for detecting operating status of the shutter. The device includes a shutter for receiving a light from a source, a solenoid for controlling movement of the shutter, and an optical sensor connected to the shutter for detecting the light received by the shutter. The solenoid produces a electrical signal indicating the solenoid operating state signal. The sensor produces electrical signal indicating open and closed stages of the shutter. The device further includes an electronic circuit for receiving both the electrical signals, and outputting an electrical output signal reflecting the operating status of the shutter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.