Elevator structure

Details Elevator structure Elevator structure

1976-08-19

1977-09-27

Blunk, Evon C.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 24, 187 42, B66B 908

Patent

active

040505464

ABSTRACT:
An elevator structure for use on an inclined stairway extending between a lower landing and an upper landing for movement of passengers and/or freight between the landings and includes an elevator car having side members movable along respective rail members mounted on stair stringers each of which extends between the lower landing and the upper landing. The side members of the elevator housing are each moved along the respective rail member in response to movement of ball bearing screw structures having nut members mounted on and driven by balls operating in grooved shafts selectively rotated by a reversible drive motor.

REFERENCES:
patent: 457645 (1891-08-01), Hancock
patent: 2207544 (1940-07-01), Knudsen
patent: 2227111 (1940-12-01), Sturm
patent: 2270735 (1942-01-01), Knudsen
patent: 2619196 (1952-11-01), Scott
patent: 2674347 (1954-04-01), Thompson
patent: 2824623 (1958-02-01), Nord et al.
patent: 3121476 (1964-02-01), Mazzarelli
patent: 3833092 (1974-09-01), Flinchbaugh

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