Web tracking system
US4485982A · kind A · utility
75Cited by
16References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Nov 24, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0016
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A web tracking system for a continuous web of material which is transported from a supply to a takeup means along a predetermined path via one or more processing stations and comprises aligned tracking indica along at least one edge of the web. Means are provided to observe the tracking indica as the web is transported along the system path and produce information either indicative of dimensional changes in the length and width of the web due to web shrinkage or expansion or indicative of a particular point along the length of the web useful at one or more of the processing stations in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.