Collapsing stair lift

Details Collapsing stair lift Collapsing stair lift

1992-06-29

1993-08-10

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

414921, 280166, B66B 920

Patent

active

052340783

ABSTRACT:
A collapsible stair lift is operable between an upper floor level and a lower floor level. The lift has a set of collapsing steps that lower from their normal in use condition to a position in which the treads of the various steps are flush with the lower floor. A platform is located at the top of the stairs and lowers from the top of the stairs to a position flush with the stair treads. The unit is particularly useful in domestic environments where space is limited.

REFERENCES:
patent: 2740165 (1956-04-01), Ward
patent: 3957284 (1976-05-01), Wright
patent: 4251179 (1981-02-01), Thorley
patent: 4285416 (1981-08-01), Dudynskyj
patent: 4299528 (1981-11-01), Kazeil et al.
patent: 4457402 (1984-07-01), Del Vecchio et al.
patent: 4583466 (1986-04-01), Reddy et al.
patent: 4606433 (1986-08-01), Smalley et al.
patent: 4804308 (1989-02-01), Hamblin et al.

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