Dynamically balanced seat assembly

A - Human Necessities – 47 – C

Patent

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Details

A47C 1/02 (2006.01) A47C 1/022 (2006.01)

Patent

CA 2489399

A seat assembly (21) including a seat (22), a backrest (23) and a mounting assembly (24) mounting the seat (22) in a near horizontal orientation for movement along an upwardly concaved arcuate seat path having a center of curvature (37) proximate the center of mass (39) of a person seated on the seat, and the mounting assembly (24) further mounting the backrest (23) in a near vertical orientation for movement independently of the seat along a forwardly concaved arcuate path having a center curvature (37) proximate the center of mass (39) of the person. An adjustment assembly (61) is provided for adjusting the radius of curvature of the path of motion of the backrest (23). Also provided are a backrest tilt adjustment assembly (71), an armrest adjustment assembly (90), a seat biasing assembly (110) and a seat motion latching assembly (111). A method of self-adjusting support and alignment of a backrest also is disclosed.

Ensemble siège (21) comprenant un siège (22), un dossier (23) et un ensemble de montage (24) fixant le siège (22) dans une orientation proche de l'horizontale afin qu'il se déplace le long d'un trajet incurvé vers le haut et concave possédant un centre d'incurvation (37) situé à proximité du centre de la masse (39) d'une personne assise sur le siège. Cet ensemble de montage (24) fixe également le dossier (23) dans une orientation proche de la verticale afin qu'il se déplace indépendamment du siège, le long d'un trajet incurvé concave vers l'avant possédant un centre d'incurvation (37) situé à proximité du centre de la masse (39) de la personne. Un ensemble de réglage sert à régler le rayon d'incurvation du trajet de déplacement du dossier (23). L'invention concerne également un ensemble de réglage de l'inclinaison du dossier (71), un ensemble de réglage des accoudoirs (90), un ensemble de sollicitation du siège (110) et un ensemble de verrouillage du déplacement du siège?¿(111). Elle concerne également un procédé de support et d'alignement à réglage automatique du dossier.

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