Compressed-air breaker
US4973806A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1988 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Oct 25, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The compressed-gas breaker has a movable contact member (1) and a fixed contact member (2) having in each case at least one arcing contact (6, 7) as well as, fixed on the movable contact member (1), a pressure space (10) of a volume independent of the switching travel and storing arc-compressed quenching gas in breaking, and has an insulating nozzle (8) arranged coaxially to the two contact members (1, 2). With this breaker, the parting speed of the arcing contacts (6, 7) is increased significantly with respect to the drive speed without an appreciable increase in its drive energy and without changing its quenching geometry. The arcing contact (7) of the fixed contact member (2) being guided displaceably in axial direction in a sliding contact (14) and being part of a converter element is operated by the movable contact member (7) and arranged downstream of the nozzle constriction (9) of the insulating nozzle (8). In breaking, this converter element transfers the movement of the movable contact member (1) oppositely onto the arcing contact (7) of the fixed contact member (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.