Pretensioned jack for controlling the operating pressure between two rotary cylinders
US5181468A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Apr 23, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F33/0072
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device for controlling the operating pressure between the two rotary cylinders in a machine used for processing layers such as webs, ink films, or the like for instance on an offset printing machine. The device includes a pneumatic jack having an outlet rod of a piston thereof which acts to position each bearing supporting an end of a central shaft of a cylinder. When a chamber of the jack is subjected to pressure, the rod acts against the shift of the bearing in a direction which causes an increase of the distance between the two cylinders. A fixed, though adjustable, arresting piece acts against a shift of the bearing in a direction which would cause a reduction of the distance between the cylinders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.