Valve override mechanism
US4844407A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Jun 18, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/143
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved override structure for a valve having an override stem having T slot on its first end for connecting to the T shape of the valve member stem, an actuator threaded onto the override stem for moving the override stem axially to cause movement of the valve member between open and closed positions, pins and slots for preventing rotary movement of said actuator, an engaging member for receiving a handwheel on the other end of the override stem for imparting rotation to the override stem within the actuator, such rotation causing axial movement of the override and valve member stems to move the valve member without movement of the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.