Valve lock
US5427135A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Nov 24, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86646
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a vented ball valve and lockout ring assembly. A vented valve assembly including a valve body having a vent hole therein, and first and second flow-through ends with a valve member receiving chamber thereinbetween, and a stem receiving passage communicating with the chamber. A valve member is disposed within the chamber. The valve member has a throughbore therein in operable alignment with the first end second flow-through ends and at least one valve member vent hole through the wall of the valve member in flow communication with the throughbore. A stem extends through and is rotatably mounted within the stem receiving passage and engageable with the valve member for rotating the valve member in and out of flow-through alignment. A venting means in cooperation with said stem provides selected flow communication with the atmosphere through the valve body vent hole, between the stem and stem receiving passage, through the chamber, and through said valve body vent hole to the flow-through ends. A removable, generally "d" shaped lock-out ring having a circular main body with a projection having a hole therein extending outward therefrom is rotatably and…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.