Seating with comfort surface

Details Seating with comfort surface Seating with comfort surface

A - Human Necessities

47

C

A47C 7/28 (2006.01) A47C 7/02 (2006.01)

Patent

CA 2528041

A chair includes a base, a seat, a back, and a control operably supporting the seat and back on the base for movement between upright and recline positions. The seat and back include a stiff perimeter frame with opposing perimeter sections, and a plurality of rods each independently bendable in vertical and angled directions. End bearings on the rods are captured in pockets in the perimeter frame, which limits their inward and outward sliding movement. The control includes front and rear leaf springs and a pivot arm operably supporting the seat and the back for synchronous movement, with the direction of movement being such that energy is stored during recline. The energy stored during recline assists in providing a heavier person with added counterbalancing force during recline. A booster mechanism is also selectively engageable for added support upon recline.

Cette invention concerne une chaise comprenant une base, une assise, un dossier et une commande assurant les déplacements verticaux et l'inclinaison de l'assise et du dossier. L'assise et le dossier comprennent un cadre rigide avec des parties périphériques opposées, et une pluralité de lames pouvant être cintrées indépendamment les unes des autres dans la direction verticale et de biais. Les paliers d'extrémité des lames sont pris dans des poches du cadre , ce qui limite leur mouvement coulissant vers l'intérieur ou vers l'extérieur. Le mécanisme de commande comprend des ressorts à lame avant et arrière et un bras pivotant assurant le mouvement synchrone de l'assise et du dossier, le sens du mouvement étant tel que de l'énergie est stockée pendant le mouvement d'inclinaison. L'énergie ainsi stockée favorise l'équilibrage pendant l'inclinaison dans le cas d'une personne lourde. Un mécanisme d'assistance peut également s'engager sélectivement et fournir un surcroît de maintien pendant l'inclinaison.

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