Joining segments of the secondary in a linear motor driven eleva

Details Joining segments of the secondary in a linear motor driven eleva Joining segments of the secondary in a linear motor driven eleva

1992-09-30

1994-09-06

Skudy, R.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 95, 187 94, 310 12, B66B 106, H02K 4100

Patent

active

053450477

ABSTRACT:
The present invention provides a linear motor driven elevator apparatus which enables a decrease in the thrust variation at the passage of primary windings of a linear induction motor loaded on a car or a balance weight through joints of secondary conductors and which can prevent an unpleasant impression from being given to the passengers.
In the elevator apparatus, each of the connections of the secondary conductor members of the linear induction motor serving as a drive source for vertically driving an elevator car has a structure in which each of the secondary conductor members is notched to about half of the thickness thereof, and the notch portions are superposed. The length of each of the notch portions is set to a value greater than the pole pitch of the primary windings of the linear induction motor, and the set heights of the joints are different from each other.

REFERENCES:
patent: 3882265 (1975-05-01), Johnston et al.
patent: 4008365 (1977-02-01), Carlson
patent: 5033588 (1991-06-01), Nakai et al.
patent: 5062501 (1991-11-01), Pavoz et al.
patent: 5141082 (1992-08-01), Ishii et al.
patent: 5203432 (1993-04-01), Grinaski

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