Control valve device
US5137255A · kind A · utility
12Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Jun 13, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/48
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control valve device for controlling flow rate, comprises: valve holder (31) linearly moved forward and backward by a driving unit (2), said valve holder serving as a converting mechanism for converting a rotary motion of driving means into a linear motion; valve piece (32) being supported by the front end of the valve holder while movable back and forth direction, and fitted into a valve seat (1b) when the valve holder advances toward the valve seat; and a spring (37) interposed between the valve piece and the valve holder for urging valve piece toward the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.