Displacement sensing and guide apparatus
US4054251A · kind A · utility
24Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1976 |
| Grant date | Oct 18, 1977 |
| Priority date | — |
| Expiry date | May 4, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H23/0208
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A displacement sensing and guide apparatus for continuous sheet material wherein the edges of a moving sheet of material are sensed by electromechanical or other variable voltage or variable impedance sensing and feedback means and communicate electrically with an electrical switching system, either directly or through a balanced bridge circuit, to operate the switching system and to indicate and to correct a displacement of the sheet material from a predetermined position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.