Sliding door devices

A sliding door system has a pair of horizontally opposed vertical surfaces defining therebetween an opening, an upper horizontal surface connecting uppermost ends of the vertical surfaces, a lower horizontal surface connecting lowermost ends of the vertical surfaces, and a door moving horizontally t...

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Bibliographic Details
Main Author KANOI MASAHIRO,NAKASHIMA TOSHIRO,TAKATORI KAZUO
Format Patent
LanguageEnglish
Published 15.08.2007
Subjects
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
TRANSPORTING
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Summary:A sliding door system has a pair of horizontally opposed vertical surfaces defining therebetween an opening, an upper horizontal surface connecting uppermost ends of the vertical surfaces, a lower horizontal surface connecting lowermost ends of the vertical surfaces, and a door moving horizontally to open and close the opening. The sliding door system also includes a first optical device having a light emitter for emitting light, a second optical device having a light detector for detecting the light, and a light reflector for reflecting the light emitted from the light emitter to the light receiver. The light reflector is positioned in at least one of the horizontally opposed vertical surfaces. The first and second optical devices are positioned in the upper horizontal surface.
Bibliography:Application Number: CN20031028589