Improved cellular cushion vehicle seat system

A - Human Necessities – 47 – C

Patent

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Details

A47C 27/18 (2006.01) A47C 4/54 (2006.01) A47C 7/02 (2006.01) A47C 27/10 (2006.01) A47C 31/12 (2006.01) B60N 2/44 (2006.01)

Patent

CA 2456851

An improved vehicle seat assembly (20) for mounting on the frame (F) of a vehicle driver's seat (s) including a polymer support plate (22) attached to the frame, a polyurethane foam base (24) on the support, an inflatable air cell cushion (26) on the base and an elastic cover (28). The inflatable air cell cushion (26) includes individual inflation zones (51) each comprised of individual interconnected inflation cells (52). The zones are normally isolated from each other. A center zone (51) having a preset inflation pressure is positioned under the ischial area of the driver. Front, back and side bolster zones provide front-to-back and side-to-side support. The individual air cells (52) of the center zone (51) are interconnected by a serpentine airflow path of reduced area to enhance the vibration and shock absorption characteristics of the zone.

Cette invention a trait à un ensemble siège de véhicule amélioré (20) à monter sur le cadre (F) d'un ou de plusieurs sièges pour conducteur de véhicule. Cet ensemble comporte une plaque polymère de support (22) fixée au cadre, une base en mousse de polyuréthane (24) placée sur la plaque support, un coussin gonflable à alvéoles d'air (26) posé sur la base et une protection élastique (28). Le coussin gonflable à alvéoles d'air (26) comporte des zones de gonflage distinctes (51) constituées, chacune, d'alvéoles gonflables individuelles interconnectées (52). Ces zones sont, normalement, isolées les unes des autres. La zone centrale (51), dont la pression de gonflage est prédéterminée, vient se placer sous la partie ischiale du conducteur. Des zones de traverse antérieures, postérieures et latérales assurent un soutien frontal-arrière et latéral-latéral. Les alvéoles individuelles (52) de la zone centrale (51) sont reliées les unes aux autres par une configuration sinueuse d'écoulement d'air d'une surface réduite afin d'accroître les caractéristiques vibratoires et d'amortissement des chocs de ladite zone.

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