Photographic sheet material liquid processing apparatus and process for constructing a sealing ring
US5970270A · kind A · utility
2Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Apr 3, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D3/132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The apparatus includes a path-defining roller (28) and a sealing roller (38, 39) in contact therewith to seal the path-defining roller from the housing of the apparatus. A sealing ring (82) surrounds one end of the sealing roller and is urged into contact with a sealing surface (68). The sealing ring, in its relaxed condition, is undersized with respect to the sealing roller and when mounted on the sealing roller exhibits a flat face (96) to the sealing surface. The performance of the sealing is predicable and reliable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.