Manual override system for linear magnetically operated valve
US5484133A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1994 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Apr 19, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/1262
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention provides a manual override system for a linear magnetically operated valve assembly having a valve member reciprocally located in a valve body. A first carrier member connected to the valve member mounts a peripheral set of driven magnets. A barrier member surrounds the first carrier member and is hermetically sealed to the valve body. A second carrier member surrounds the barrier member and mounts a set of driven magnets for magnetically inducing following linear movement in the first carrier member and the valve member in response to specific linear movement of the second carrier member. The manual override system includes a piston member reciprocally located in the valve body for linear movement between the valve body and the first carrier member, the piston member having an annular skirt thereon sealingly engaging an inner bore of the valve body and defining first and second sealed chambers on respective sides thereof within the valve body. Hydraulic fluid is contained within each chamber. One of the chambers can be further pressured while the other chamber is drained to effect linear movement of the piston member into abutting engagement with the valve me…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.