Title:
MAINTENANCE OPERATING DEVICE FOR ELEVATOR
Document Type and Number:
Japanese Patent JPH04323181
Kind Code:
A
Abstract:
PURPOSE: To ensure safety of maintenance work without generating an unnecessary signal such as an abnormal audible signal.
CONSTITUTION: After a maintenance change-over switch SW is switched on maintenance operation side, a maintenance continuing relay DH is energized until a cage floor is conformed with a building floor regardless of the switching of the maintenance change-over switch SW on normal side so as to continue maintenance operation. Thus, maintenance work can be executed without causing the confusion of information.
Inventors:
NAKAZAWA ATSUSHI
ISHIBASHI NOBUMICHI
ISHIBASHI NOBUMICHI
Application Number:
JP11792791A
Publication Date:
November 12, 1992
Filing Date:
April 23, 1991
Export Citation:
Assignee:
HITACHI BUILDING SYST ENG
International Classes:
B66B5/00; (IPC1-7): B66B5/00
Attorney, Agent or Firm:
Kenjiro Take (1 person outside)