User height adjustable tables, support structures, and chairs

Details User height adjustable tables, support structures, and chairs User height adjustable tables, support structures, and chairs

2007-09-18

2007-09-18

Barfield, Anthony D. (Department: 3636)

Horizontally supported planar surfaces

Vertically adjustable

With force-multiplying means

C108S150000, C248S404000, C248S161000

Reexamination Certificate

active

09566215

ABSTRACT:
A height adjustable structure comprises a base, a height adjustment column disposed above the base and supported thereon, and a table top or chair seat support disposed above the height adjustment column. Alternatively the height adjustable structure comprises two or more base sections, a height adjustment column disposed above each base section and supported thereon, and a table top or chair seat support disposed above the height adjustment columns. Each height adjustment column comprises a telescoping spring height adjustment lifting mechanism. The telescoping spring height adjustment lifting mechanism is typically a gas spring. Actuation mechanisms which actuate or unlock each lockable telescoping spring height adjustment lifting mechanism are used to allow the user to easily make height adjustments. The actuation mechanisms may extend above the table top. Connecting bars may be used to connect more than one actuation mechanism.

REFERENCES:
patent: 4526334 (1985-07-01), Rantakari
patent: 5230290 (1993-07-01), Crossman
patent: 5437236 (1995-08-01), Zeiner
patent: 5553550 (1996-09-01), Doyle
patent: 5802988 (1998-09-01), Shields
patent: 6021722 (2000-02-01), Raycraft
patent: 2002/0011193 (2002-01-01), Beck et al.
patent: 88 04 868.3 (1988-07-01), None
patent: 9068889 (1997-02-01), None

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