Pneumatic valve drive
US10975896B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2016 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Jul 25, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7053
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pneumatic valve drive (1) for a valve (2), in particular for a vacuum valve, which has at least one pneumatic cylinder (3) with at least one piston (4) that is movably mounted in the pneumatic cylinder (3) and at least two cylinder cavities (5, 6) arranged on opposite sides of the piston (4). Each cylinder cavity (5, 6) is connected to at least one pressure source for applying pressure to each cylinder cavity (5, 6). One of the pressure sources is a constant pressure source (7) for applying a constant pressure to the cylinder cavity (5) arranged on one of the sides of the piston, and one of the other pressure sources is a regulated pressure source (8) for applying a variably regulatable pressure to the cylinder cavity (6) arranged on the opposite side of the piston (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.