Shot blasted web conveying roller
US4970768A · kind A · utility
12Cited by
21References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Oct 25, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2404/521
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A stainless steel roller for conveying a web has a surface prepared by blasting the surface of the roller with steel shot to create on the surface a deep texture with well rounded down features and sharp up features with peaks. The blasted surface is finished with a grinding action for removing the peaks to produce plateaus surrounded by interconnected channels. The interconnected channels of the surface allow air entrained between the roller surface and a web to be vented through the channels while the web is in contact with the roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.