Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1987-03-20
1988-06-14
Shoop, Jr., William M.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
B66B 302
Patent
active
047505923
ABSTRACT:
A system for reading or sensing the position of an elevator relative to a landing and for providing corresponding control signals to a controller for controlling the elevator movement in response to the sensed position comprises a tape veritically mounted in an elevator shaft and having reflective vanes positioned on it to indicate position relative to a landing. Sensors are mounted on the elevator car and produce predetermined output signals in response to detection of vanes, and suitable control circuitry responds to predetermined combinations of the sensor output signals to produce suitable output control signals to a controller which controls the car's speed, direction and positioning. The system is installed by first vertically mounting a suitable tape in an elevator shaft so that it runs through a sensor unit mounted on an elevator cab, and positioning vanes on the tape at predetermined positions relative to each floor.
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Duncanson Jr. W. E.
Shoop Jr. William M.
United States Elevator Corp.
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