Stairway chairlift mechanism

Details Stairway chairlift mechanism Stairway chairlift mechanism

1988-02-02

1990-04-03

Skaggs, H. Grant

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

297349, 248425, B66B 908

Patent

active

049132644

ABSTRACT:
A stairway chairlift for transporting passengers in ascending and descending directions along a stairway includes a rail mounted adjacent one stairway wall and further includes a motorized chair unit movable along the rail. A seat, for carrying the passenger, is mounted to the top of the chair unit, and a swivel mechanism permits the seat to be rotated around a vertical axis to facilitate movement of the passenger onto and off of the seat. To minimize interference with ordinary use of the stairway, the seat is pivotally mounted to a horizontal plate which moves inwardly or outwardly in response to rotation of the seat so as to maintain a substantially constant clearance between the seat and the stairway wall. To further reduce interference with ordinary use of the stairway, the seat can be folded upwardly, as can be a foot rest mounted adjacent the lower end of the chair unit. A pair of arms, having inwardly curved end portions, can be lowered to form a retaining barrier around the seat as a passenger is being transported, and can be raised to permit the passenger to leave the seat after such transportation has been completed.

REFERENCES:
patent: 2845990 (1958-08-01), Hubert
patent: 2856027 (1958-10-01), Schryver
patent: 2888099 (1959-05-01), Hoffmann
patent: 3113804 (1963-12-01), Ritter
patent: 4043427 (1977-08-01), Ackerman
patent: 4417715 (1983-11-01), Edwards
patent: 4564086 (1986-01-01), Kingston

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