Locking elevator car frame to building during loading/unloading

Elevator – industrial lift truck – or stationary lift for vehicle – Having specific means contacting or on load support for... – Stationarily mounted and having disparate movable contact...

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Details

187356, B66B 516

Patent

active

057719950

ABSTRACT:
To prevent elevator rope stretch effects when a horizontally transferable elevator cab (18) is rolled onto and off of an elevator car frame (10), an elevator car/floor lock (31) includes a bolt (37) which extends across the interface between the car frame and the building and engages a strike (39). Jack screw (44) and solenoid (60) embodiments are shown. The bolt may extend from the car frame to the building (FIGS. 1-4) or from the building to the car frame (FIG. 5).

REFERENCES:
patent: 1027229 (1912-05-01), Yetter
patent: 1152318 (1915-08-01), Howarth
patent: 1347157 (1920-07-01), Hanson
patent: 1359641 (1920-11-01), Williams
patent: 1939729 (1933-12-01), Stark
patent: 3434609 (1969-03-01), Bosworth et al.
patent: 4799719 (1989-01-01), Wood
patent: 4986099 (1991-01-01), Johnson et al.
patent: 5546777 (1996-08-01), Liu et al.

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