Web-position controller
US4760945A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1986 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Apr 10, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2553/42
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A conveyor belt controller for controlling the variations in the lateral position of a running conveyor belt comprises a regulated stretch of conveyor belt having a guide member, particularly a guide roller, at one end, a controllable guiding mechanism able to laterally displace the conveyor belt when the conveyor belt is shifted from a correct position, and at least one video camera observing the lateral motion of the conveyor belt whose electrical image signal is convertable by a computer into a controlling command for the guiding mechanism. The video camera is mounted upstream from the guide member spaced approximately a distance equal to the length of the regulated stretch. An indicating member is provided in the image field of the video camera for the actual position of the guiding mechanism extending transversely to the guiding mechanism. Advantageously, the indicating member is provided with an indicator light source which is pulsed for more sensitive detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.