Plug valve indicator
US8465001B2 · kind B2 · utility
22Cited by
21References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2010 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Sep 10, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8292
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve has a body having a rotatable valve element. A drive mechanism has a drive input member and a drive output member that are coupled to the valve element for rotating the valve element. A shear member is operatively located within the drive mechanism between the drive input member and the drive output member for shearing in the event the force to rotate the valve element is excessive. The valve has indicia indicating open and closed positions for the valve element. An indicator is mounted to output drive member to properly align with the indicia regardless whether the shear member has sheared or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.