Monitoring supports in elevator installations
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United States of America Patent
Stats
-
Dec 10, 2013
Grant Date -
Oct 20, 2011
app pub date -
Apr 18, 2011
filing date -
Apr 19, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An elevator installation can comprise an elevator cage, a counterweight, a first support, a second support, a drive for driving of drive pulleys in common and for movement of the supports, and a monitoring device with two slack support switches. A first slack support switch is arranged in the region of a first fastening point for monitoring the first support. A second slack support switch is arranged diagonally opposite in the region of another fastening point for monitoring the second support. The monitoring device comprises a safety circuit, in which the two slack support switches are so integrated in a safety circuit of the elevator installation that actuation of just one of the two slack support switches interrupts the safety circuit.
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