Position indicator for rising stem valve
US4569366A · kind A · utility
10Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1982 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Jun 21, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8292
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rising stem valve includes a scale plate attached to the stem and rising with the stem. A stationary reference mark on the valve bonnet indicates the degree of opening of the valve on the scale plate. The scale plate is rotatable around the valve stem to permit viewing from any position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.