Body support structure

A - Human Necessities – 47 – C

Patent

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Details

A47C 3/22 (2006.01) A47C 1/024 (2006.01) A47C 1/032 (2006.01) A47C 3/30 (2006.01)

Patent

CA 2700254

A body support structure includes a body support member and a base having an upper component coupled to the body support member and a lower component adapted to be supported on a floor. An adjustable spring mechanism biases the body support member. A weighing mechanism is coupled to the adjustable spring mechanism. The weighing mechanism includes a height adjustment device disposed between the upper and lower components of the base. The height adjustment device includes a pneumatic spring having a pressure tube coupled to the lower component and a piston rod extending upwardly from and moveable relative to the pressure tube. A housing is disposed around the pneumatic spring and is coupled to the upper component. An adapter is coupled to the piston rod. A weighing spring is disposed between the adapter and the housing, with the housing moveable relative to the adapter between first and second weighing positions.

La présente invention concerne une structure de support du corps comprenant un élément de support du corps et une base comprenant un élément supérieur couplé à l'élément de support du corps et un élément inférieur conçu pour prendre appui sur le sol. Un mécanisme à ressort réglable applique une précontrainte à l'élément de support du corps. Un mécanisme de pesée est couplé au mécanisme à ressort réglable. Le mécanisme de pesée comprend un dispositif de réglage en hauteur disposé entre l'élément supérieur et l'élément inférieur de la base. Le dispositif de réglage en hauteur comprend un ressort pneumatique comprenant un tube de pression couplé à l'élément inférieur et une tige de piston qui s'étend vers le haut et peut se déplacer par rapport au tube de pression. Un boîtier est disposé autour du ressort pneumatique et est couplé à l'élément supérieur. Un adaptateur est couplé à la tige de piston. Un ressort de pesée est disposé entre l'adaptateur et le boîtier, le boîtier pouvant se déplacer par rapport à l'adaptateur entre une première et une deuxième position de pesée.

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