Balanced carrier rolls and methods of fabrication
US4920627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Feb 26, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4973
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Metal carrier rolls having a mass of at least about 100 pounds for use in paper making, non-woven fabric making and other applications are balanced to within a predetermined first residual unbalance value for rotation of the roll up to a predetermined maximum service speed of at least about 100 RPM, preferably within a Balance Quality Grade G-6.3 residual unbalance value, by fabricating a pair of substantially identical removably mountable metal journals, each being balanced to within a second residual unbalance value less than the first residual unbalance value, preferably to within a Balance Quality Grade G-2.5 residual unbalance value, fabricating a body assembly including a hollow metal body with a pair of metal end heads each being adapted for removably mounting a journal, the body assembly being balanced to within a third residual unbalance value less than the difference between the first and twice the second residual unbalance values, and, preferably, within a Balance Quality Grade G-2.5 residual unbalance value, and removably mounting the pair of journals to the end heads to form the roll balanced to within the first residual unbalance value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.