Prevention of fibers from entering the pinch point between a rotating feed roll and a stationary shoe
US4064597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Oct 14, 1996 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/72
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A compressed batt of fibers is fed against a rotating toothed roll for dispersion of the fibers from the batt and this dispersion of fibers is fed through the point of closest clearance between the toothed roll and a feed roll rotating in the opposite direction. Downstream of this point of closest clearance, a stationary shoe is provided spaced from the surface of the toothed roll to permit the dispersion of fibers to follow the surface of the toothed roll. The shoe is closely fitted to the surface of the feed roll which has the effect of forming a pinch point where the feed roll enters beneath the shoe. In accordance with the invention, the shoe is equipped with passages for the flow of air to exit at the pinch point to prevent fibers from entering the pinch point, i.e., between the feed roll and shoe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.