Reset mechanism for stored energy emergency barriers
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United States of America Patent
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Mar 21, 2017
Grant Date -
Jan 22, 2015
app pub date -
Oct 7, 2014
filing date -
Jul 29, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A stored energy emergency barrier release device comprising a barrier and a barrel member for storing the barrier thereon. The barrel member is rotatable on a stationary counterbalance shaft and a push down shaft. The release device further includes a push down spring coupled to the push down shaft for storing potential energy in order to exert a closing force on the barrier when the release device is positioned from an engaged position to a released position. The release device includes a reset mechanism interfaced with the push down spring for transmitting a lifting torque to the push down spring in response to moving the barrier from a first position to a second position to store energy within the push down spring.
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