Pneumatic actuator, especially for controlling a basis weight profile of a web actuator
US6296703A · kind A · utility
0Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1998 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Dec 4, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C11/042
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A pneumatic actuator for control of the coating thickness or basis weight of a coating apparatus for paper or cardboard webs has a pair of spring metal plates which can be deflected outwardly by a pneumatically extendable cushion between these plates in a frame. One end of the pair of plates is anchored while the other end is attached to a coating pin which works against a compression spring counteracting the outward deflection of the metal plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.