Chairs and seats – Movable back
Patent
1995-08-04
1996-12-24
Chen, Jose V.
Chairs and seats
Movable back
29741136, B60N 202
Patent
active
055868096
ABSTRACT:
A mechanism is provided for adjusting the height of the backrest relative to a chair seat. The adjustment mechanism for releasably retaining the backrest in a plurality of selected positions relative to a seat permits the chair to be shipped in a "knocked down" condition and easily assembled by the consumer. The adjustment mechanism includes a channel member that is secured to the backrest, and a support member carried by the chair that is slidably received in the channel member and rigidly locked in selected positions. The support member has vertically aligned rack teeth and the backrest has a movable catch having pawls that are adapted to engage the rack teeth. Movement of the catch places the pawls into engagement with the rack teeth to prevent the downward movement of the backrest from a selected vertical position.
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Allred David E.
Chen José V.
Herman Miller Inc.
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