Height adjustable work chair

Details Height adjustable work chair Height adjustable work chair

2007-04-03

2007-04-03

Dunn, David R. (Department: 3636)

Chairs and seats

Movable bottom

Bottom and back movable as a unit

C297S344100, C297S344120, C297S411360, C297S411350, C297S338000, C248S157000

Reexamination Certificate

active

10973764

ABSTRACT:
A height adjustable chair has an upper portion that moves relative to a lower portion. Push-off arm rests are provided so that a person need not leave the chair to adjust the seat height upwardly. A seated person can transfer their body weight to the push-off arm rests supported directly by the stationary lower portion while the seat is being adjusted upwardly.

REFERENCES:
patent: 4561693 (1985-12-01), Brownlie et al.
patent: 5009467 (1991-04-01), McCoy
patent: 6012775 (2000-01-01), Czarnecki
patent: 6213552 (2001-04-01), Miotto
patent: 6425633 (2002-07-01), Wilkerson et al.
patent: 6425636 (2002-07-01), Chen
patent: 6685267 (2004-02-01), Johnson et al.
patent: 6923505 (2005-08-01), Siminovitch et al.

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