Patent ID: 6435315
Filing Date: 2002-08-20
Classification: B66B

Abstract:
Apparatus for determining the position of an elevator car within a hoistway that includes:an elevator car mounted for reciprocal movement along a vertical path of travel within a hoistway between a series of landings, a code rail strip containing optically discernable position related indicia, said code rail being stationarily mounted within the hoistway adjacent to the car's vertical path of travel, a sensor mounted upon said elevator for movement therewith, said sensor being positioned to scan the code rail to read said indicia indicative of the car's position in said hoistway and providing output signals relating to said indicia, a car controller for receiving said output signal from said sensor and carrying out car related functions in response thereto, and a code rail section mounted in each landing, adjacent said code rail strip, and containing indicia relating to its associated landing, said sensor being arranged to read data contained on two adjacent code rail sections simultaneously.