Long life refiner disc
US5467931A · kind A · utility
31Cited by
21References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21D1/306
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A refiner disc employing sharply tapered refiner bars wherein the upper portion of at least one side tapers inward at thirty to sixty degrees from the vertical. The tapered refiner bars tend to wear sharp. A further embodiment employs refiner disc bars which have a substantially narrower bar forming the upper portion of a standard, substantially rectangular bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.