Compact device for controlling a motor unit which displaces a screening element
US5402047A · kind A · utility
11Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1993 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | Jul 21, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/6854
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for controlling a motor unit which displaces a screening unit which includes a power supply with at least one controlled electronic switch designed to feed a regulated electrical output to the motor unit and a control loop with a circuit which detects the difference between the value of the electrical output produced by the power supply and a reference value, and wherein the reference value is selected for the electrical output as a function of input signals received by the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.