Hydraulically actuated breast roll shake
US5560808A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1995 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Feb 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S162/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a roll shake connected to a roll in a paper-making machine, wherein the roll is movable in a direction generally parallel to an axis of the roll. A first hydraulic ram assembly, including a first cylinder and a first ram reciprocally disposed in the first cylinder, is attached to the roll. A second hydraulic ram assembly, including a second cylinder and a second ram reciprocally disposed in the second cylinder, is rigidly connected to the first cylinder. A counter mass is connected to the second ram, and is movable in a direction generally parallel to the roll axis. A controller is connected to the first hydraulic ram assembly and the second hydraulic ram assembly. The controller independently controls reciprocating movements of the first ram and the second ram within the first cylinder and the second cylinder, respectively, whereby a resultant momentum of the roll and the counter mass is approximately equal to zero at any point in time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.