Chairs and seats – Movable back
Reexamination Certificate
2007-11-20
2007-11-20
Brown, Peter R. (Department: 3636)
Chairs and seats
Movable back
C297S411360, C248S423000, C403S325000
Reexamination Certificate
active
11627160
ABSTRACT:
A chair has a chair body, a rest, an adjusting mechanism for adjusting a height of the rest and including a securing element solidly connected to the chair body and having a free end with a slot, a threaded bolt extending through the slot and screwable into a thread in the rest, and a hand wheel to which the threaded bolt is rigidly connected, so that securing of the rest to the end portion of the securing element in clamping fashion is effected, a clamping sleeve has a throughbore through which the threaded bolt reaches in an assembled state and an end face with diameter greater than a width of the slot, a plurality of detent elements lockingly engageable by the end face of the clamping sleeve, wherein the clamping sleeve or the detent recesses have at least one oblique face, and a pressure-generating device builds up a pressure force between the hand wheel and the clamping sleeve and has at least one force component parallel to the longitudinal axis of the clamping sleeve.
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patent: 297 07 784 (1997-07-01), None
Brown Peter R.
Interstuhl Bueromoebel GmbH & Co. KG
Striker Michael J.
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