Control apparatus for controlling flock height in a feed chute for a fiber processing machine
US4939816A · kind A · utility
2Cited by
12References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1988 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Apr 13, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01G23/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A control unit maintains the fiber flock column in a feed chute at a set height. The control unit includes a row of light barriers located about a set height for emitting signals in response to interruption of the light barriers by fiber flock. An evaluation unit evaluates the signals to determine the actual height of the flock column and emits a control signal to adjust the feed rollers in the feed chute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.