Dosing method and apparatus for the delivery of predeterminate quantities of fiber flocks per unit of time
US5257438A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1991 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Aug 9, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01G13/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The dosing method and apparatus meters predeterminate quantities of fiber flocks per unit of time by means of two feed devices arranged at the lower end of a flock chute and which form therebetween a conveying gap and an opening roll is preferably arranged beneath the feed devices. The feed devices selectively comprise either: PA1 (a) a rotatable feed roll and an oppositely situated slide; or PA1 (b) a rotatable feed roll and an oppositely situated driven or freely revolving belt; or PA1 (c) two oppositely situated revolving belts, wherein at least one of the revolving belts is driven and the other either revolves or is likewise driven; or PA1 (d) a driven revolving belt and a oppositely situated slide; or PA1 (e) a rotatable feed roll and an oppositely situated freely rotatable further feed roll; or PA1 (f) a rotatable feed roll and an oppositely situated feed trough; or wherein, for all of the indicated possible embodiments (a) to (f) the conveying gap converges to a minimum width and at least one of the feed devices is pre-biased in the direction of the other feed device and is movable away from the other feed device by the force of the fiber flocks such that the spacing between…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.