Linear motor elevator

Details Linear motor elevator Linear motor elevator

1994-12-02

1997-04-29

Nappi, Robert

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

310 10, 187411, 187252, 187250, B66B 106, B66B 708, B66B 902

Patent

active

056251742

ABSTRACT:
A linear motor elevator includes a linear motor that is permitted motion within the hoistway. The linear motor is mounted in a manner permitting motion of the entire linear motor, including stator, through the hoistway. As a result, the length of the hoistway and the run of the elevator may extend beyond the length of the stator. In a particular embodiment, the linear motor is connected to a car in a configuration permitting the car to travel at approximately twice the speed of the linear motor within the hoistway. The moving element of the linear motor is connected to the car to permit the car and moving element to travel at the same speed relative to the hoistway. As a result, the moving element moves relative to the stator at half the speed of the car speed and the height of the hoistway may be approximately double the height of the stator.

REFERENCES:
patent: 2905374 (1959-09-01), Brumby
patent: 5090516 (1992-02-01), Grinaski et al.
patent: 5183980 (1993-02-01), Okuma et al.
patent: 5203403 (1993-04-01), Grinaski et al.
patent: 5226507 (1993-07-01), Kawarasaki
patent: 5235226 (1993-08-01), Olsen et al.
patent: 5299662 (1994-04-01), Reddy et al.
patent: 5300737 (1994-04-01), Nakanishi

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