Elevating and supporting apparatus

Details Elevating and supporting apparatus Elevating and supporting apparatus

1986-04-14

1988-06-21

Dorner, Kenneth J.

Chairs and seats

Movable bottom

Interconnected with back for relative concurrent movement

108147, 182141, 187 9E, 187 95, 2481885, 248405, A47C 340, E04G 122

Patent

active

047521023

ABSTRACT:
Apparatus having telescoping box-like cage sections and capable of raising a person or object to a desired height and solidly supporting same at such height, the relative movement of the sections being guided by pre-loaded rollers bearing against vertical guide surfaces provided by the flanges of angle iron members forming the vertical edges of the cage sections. A method is disclosed for assembling the apparatus with the rollers pre-loaded against the cooperating guide surfaces by clamping the angle iron members of the outer cage inwardly before connecting them with cross members under tension.

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