05476157 is referenced by 20 patents and cites 6 patents.

An elevator control system (40) for automatically controlling the operation of an elevator car (22A) having a car door (24A) in which the elevator moves between different floor levels of an elevator shaft (30A) in which each floor level has associated hoistway doors (26A, 26C) for providing access to the elevator car (22A) in the shaft (30A) and an elevator hoistway operation monitoring system (34) with individual floor monitoring switches (32) for determining the floor level location of the elevator car (22A), individual hoistway door monitoring sensors (38) for sensing the opening of a hoistway door (26A) relays (56, 58, 52) and contact (50) coupled with an elevator safety circuit (42) for automatically preventing the elevator car (22A) from moving if a hoistway door (26A) is opened at a floor level other than the floor level at which the elevator car (22A) is located and for prohibiting the car (22A) from moving in response to the closing of the opened hoistway door (26A).

Title
Elevator control system with elevator hoistway operation monitoring system and method
Application Number
8/254045
Publication Number
5476157
Application Date
June 3, 1994
Publication Date
December 19, 1995
Inventor
Sam S Todaro
6453 N. Knox, Lincolnwood, 60646
IL, US
Agent
Potthast & Ring
IPC
B66B 13/00
B66B 5/02
B66B 1/28
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