Rotary stem position indicator
US9518675B2 · kind B2 · utility
9Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2014 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | May 3, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8225
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A manual gate valve operator used in the oil and gas industry. The operator does not allow an increase or decrease in height when manually rotating the hand wheel. Instead, the operator has an internal indicator nut of the position of the valve. The indicator nut is observable electronically or visually.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.