Compressed-air breaker
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United States of America Patent
Stats
-
Nov 27, 1990
Grant Date -
N/A
app pub date -
Oct 25, 1988
filing date -
Oct 27, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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).
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