Fail-safe movement of elevator cabs between car frames and landi

Details Fail-safe movement of elevator cabs between car frames and landi Fail-safe movement of elevator cabs between car frames and landi

1996-06-19

1998-11-03

Nappi, Robert

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support structure or arrangement

187249, 187414, B66B 1102

Patent

active

058295534

ABSTRACT:
A first slidable auxiliary pinion (58a) on the bottom of a horizontally moveable elevator cab A (FIGS. 2-6) disposed on a car frame (14) or a landing is moved out from under the cab toward another car frame (13) or landing by means of a motorized pinion (56) until it engages a motorized pinion (57) on the adjacent car frame (13) or landing, which then pulls the auxiliary pinion and the entire cab toward the other car frame or landing until a main rack (45) fixed to the bottom of the cab engages a motorized pinion (34) on the other car frame (13) or landing, which pinion then pulls the entire cab onto the other car frame or landing. The auxiliary racks (58a, 58b) may be mounted on a common auxiliary rack member (58), or may be separate. The auxiliary motorized pinions (55, 56, 57) may be bidirectional, or may be; and auxiliary pinions (32C, 33C, 34C) may be; mounted on the same shaft with main pinions (32b, 33b, 34b).

REFERENCES:
patent: 1939729 (1933-12-01), Stark
patent: 1949399 (1934-03-01), Ayer
patent: 2052690 (1936-09-01), Austin
patent: 3447704 (1969-06-01), Guilbert, Jr.
patent: 5090515 (1992-02-01), Takahashi et al.
patent: 5601156 (1997-02-01), McCarthy et al.
Strackosch, G.R.; "Vertical Transportation: Elevators and Escalators"; pp. 472-475; New York: 1983.

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