Power supply means for electrically operated apparatuses and a switch for the power supply means
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United States of America Patent
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-
Mar 29, 1994
Grant Date -
N/A
app pub date -
Nov 4, 1992
filing date -
May 18, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trolley-type power supply means and a turntable switch for moving apparatuses such as mining equipment. The switch is provided with two coupling portions installed in parallel with each other and reversely symmetrical with respect to a turning axis. By using coupling portions, a trolley can be turned in a desired direction or shunted from the trolley track to allow another trolley to pass by.
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