Mechanism for controlling remotely disposed industrial valves and the like
US4425823A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Aug 28, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87161
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
One or more remotely disposed valves may be opened or closed by a control handwheel by means of rotatable flexible shafting and mechanism associated therewith which may reduce the torque required to rotate the hand wheel and permitting much lighter weight and less costly flexible shafting to be employed. The associated mechanism comprises pulley-belt arrangements and/or gearing structures at each valve to be opened or closed as well as an optional pulley-belt arrangement cooperating with the handwheel. A torque limiting clutch device may readily be incorporated into the system for providing necessary slippage to the valve stems in the event one or more of the remotely disposed valves reaches the end of its travel prior to the remaining valves in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.