Stair lift

Details Stair lift Stair lift

1992-05-27

1993-06-08

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

198321, B66B 906

Patent

active

052170896

ABSTRACT:
A motor driven stair lift device is driven along the tubular track filled with transmission elements comprising incompressible spheres driven by a worm. Drive spheres affixed to a carrier and disposed in a portion of the track are driven with the transmission elements, causing movement of the carrier along the track.

REFERENCES:
patent: 2824623 (1958-02-01), Nord et al.
patent: 3833092 (1974-09-01), Flinchbaugh
patent: 3966022 (1976-06-01), Cheney
patent: 4046226 (1977-09-01), Flinchbaugh
patent: 4050546 (1977-09-01), Wilson, Jr.
patent: 4179012 (1979-12-01), Heberle
patent: 4354575 (1982-10-01), Andersson
patent: 4627517 (1986-12-01), Bor
patent: 5052521 (1991-10-01), Wendt et al.

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