Anti-closing device for doors which automatically open and close
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United States of America Patent
Stats
-
Nov 24, 1981
Grant Date -
N/A
app pub date -
Apr 4, 1980
filing date -
May 3, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Anti-closing device for use with automatically opening and closing doors or the like, having a reversing switch for the door drive and a flexible rope for actuating the switch, the rope being held vertically along the free edge of the door in spaced relation and resiliently tensioned under spring action. One end of the rope is operatively connected to the switch for actuating the switch upon a deflection of the rope. A plurality of sleeves are arranged in a vertical row on the flexible rope and the lower end of the rope is connected to the lowermost sleeve while the uppermost sleeve bears against a support secured to the door whereby the sleeves are pressed against one another by the tensioning of the rope. The end surfaces of the sleeves which face one another bear tightly against each other in the position of rest and have a substantially larger outside diameter than the flexible rope.
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Family
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Cited Art Landscape
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