Method of sealing the ends of an elastomeric roll
US4113825A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1976 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Sep 12, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/145
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a fuser roll for electrostatic copying machines comprising a cylindrical metal core surrounded by a cylindrical body of elastomeric material having an outside cylindrical sleeve of protective material, the end surfaces of the elastomeric material are protected from the deleterious effects of silicone fluid by sealing rings of elastomeric material such as fluorosilicone which is resistant thereto. The rings, which are rectangular in cross section and are made of uncured, deformable material, are inserted in the ends of the sleeve with the ends of the sleeve protruding. The sleeve is assembled with the metal core and placed in a cylindrical mold. Silicone rubber is injected into the space between the core and the sleeve and the sleeve and rings are expanded into contact with the mold wall. The roll is then cured. In the finished cured rolls, the rings are bonded to the end surfaces of the silicone rubber body, and to the metal core, and to the interior cylindrical surfaces of the sleeve over an area of substantial width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.