Valve construction
US5022629A · kind A · utility
23Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Jun 27, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/082
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Fluid flow control valve in which bidirectional displacement of a valve operator is effected by momentary utilization of high current flow in a permanent magnetic flux field and longer term utilization of minimal current flow with in said flux field to maintain valve operator position in limiting displaced condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.