A - Human Necessities – 47 – C
Patent
A - Human Necessities
47
C
A47C 3/26 (2006.01) A47C 1/03 (2006.01)
Patent
CA 2218222
A chair having height-adjustable arm assemblies respectively mounted adjacent opposite sides of a seat. Each arm assembly includes a horizontally elongate armrest connected to an upper end of an arm upright. The arm upright includes a vertically oriented support segment which has a guide bore defined therein. The armrest includes a vertically elongate slide tube and a horizontally elongate arm element connected to an upper end of the slide tube. A lower end of the slide tube is movably mounted within the guide bore. A lock arrangement functions to permit the slide tube to be positioned relative to the support segment at any one of a plurality of height positions. The lock arrangement includes a cartridge assembly that has a gear which is rotatably supported and carried by the slide tube. The gear has a plurality of gear teeth which engage with a series of vertically spaced notches defined within the support segment. A lock releasing mechanism functions to displace a lock member between a locking position and a releasing position. The lock releasing mechanism includes an actuator lever and an actuator rod. The actuator lever is supported on the arm element, and the actuator rod extends into the slide tube and mounts the lock member on the lower end thereof. The lock member has locking teeth which engage the gear when the lock member is positioned in the locking position.
Cette invention concerne un fauteuil à appui-bras réglables en hauteur. Chaque appui-bras définit un plan horizontal allongé partant d'un point de raccordement à un montant. Le montant comporte un segment support vertical à alésage centré qui reçoit le tube coulissant de l'appui-bras monté à angle droit sur celui-ci. Un mécanisme de verrouillage est prévu pour permettre le blocage du tube coulissant à l'intérieur de l'alésage centré du montant, à huit réglages différents en hauteur. Le mécanisme de verrouillage comprend une cartouche portant une roue dentée tournant sur un axe porté par le tube coulissant. La roue comporte une pluralité de dents qui s'engagent dans une série d'encoches du segment support, espacées verticalement. Un mécanisme de déverrouillage permet de déplacer un verrou entre une position opérante et une position inopérante. Ce mécanisme comprend un levier et une tige de commande. Le levier est monté sur l'appui-bras tandis que la tige de commande se prolonge dans le tube coulissant où elle maintient le verrou appuyé contre l'extrémité inférieure de celui-ci. Le verrou comporte des dents qui s'engagent dans la denture de la roue dentée en position de verrouillage.
Dral Joel Robert
Wilkerson Larry A.
Haworth Inc.
Kirby Eades Gale Baker
LandOfFree
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