Valve actuating device having a reduced impact operating mechanism
US6095485A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1999 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Jan 22, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve actuating device is provided for opening and closing a valve of the type having a valve housing, a valve member sealingly engageable with a valve seat formed in the valve housing, and a valve stem attached to the valve member for moving the valve member between a closed position and an open position. The valve actuating device includes a housing which is attachable to the valve housing of the valve, a motor mounted on the housing, a pinion gear which is coupled to the motor by a shaft, the pinion gear being drivable by the motor via the shaft. The device further has a rack including a body having an end portion which is engageable with the valve stem of the valve and a longitudinal cutout along a side of the rack. The rack is moveable between a first position in which the valve is in its open position and a second position in which the end portion of the rack engages the valve stem for maintaining the valve stem in its closed position. The device further includes a rack segment slidably mounted within the longitudinal cutout of the rack, the rack member having a length which is less than a length of the longitudinal cutout, the pinion gear engaging the rack member for slida…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.