Detector and detection method for opened door to elevator room in the story with no elevator cage

Application Number: 00112131
Application Date: 2000.03.13
Publication Number: 1265371
Publication Date: 2000.09.06
Priority Information:
International: B66B5/00
Applicant(s) Name: Chen Jinlin
Inventor(s) Name: Chen Jinlin
Patent Agency Code: 32102
Patent Agent: xi shengyuan
Abstract The detector and detection method of the present invention is used to trigger alarm circuit so as to promote operator to precaution. The detector includes dry reed pipes and permanent magnets, the dry reed pipes are installed separately in side of door frames and thresholds of all stories, one permanent magnet is installed in the protection of each door frame near the dry reed pipe, one pair of permanent magnets are installed on the cage in the position of each story are connected parallelly and the parallel,combinations of all stories are connected serially.