Compensated force valve with two seats
US4239180A · kind A · utility
6Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Feb 7, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K24/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve for the escape of compressed air in order to extinguish the electric arc between the moving contacts of a circuit-breaker. The arrangement includes an intermediate moving structure between the control rod and the compensated force valve with two seats, said structure being constituted by a cylinder integral with one of the seats and a piston which cooperates with the control rod in order to transmit a rapid and reliable control command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.