A - Human Necessities – 47 – C
Patent
A - Human Necessities
47
C
A47C 7/40 (2006.01) A47C 1/027 (2006.01) A47C 7/44 (2006.01)
Patent
CA 2230107
A swinging supporting frame for a chair seat and back, comprising: - a sustantially horizontal arm (1) for fastening a chair seat; - a telescopic rod (2) supporting the chair back and being hinged to said arm (1); - one or more springs (40) acting on said vertical rod to push the chair back forward; - a spacer (44) inserted between the walls (5) of said horizontal arm; and - screw means (16) for pressing the walls of said telescopic rod (2) against the walls (5) of said arm (1) and against said spacer (44) to lock the chair back in position, wherein said springs (40) are helical springs inserted onto the hinge pin (6) which is fitted on said arm (1) and said telescopic rod (2), one of the ends of said springs acting directly against the wall of said arm (1) and the other spring end acting against said rod, in particular against said spacer (44) inserted on said clamping screw means. A plurality of friction plates (1) are arranged between said spacer (44) and the walls of said arm (1), and in order to position and set up said plates (10), said frame includes a pair of teeth (8, 9) obtained in the walls (5) of said arm by blanking and drawing.
Cadre porteur mobile pour un siège et un dossier de chaise, comportant : un bras sensiblement horizontal (1) pour fixer un siège de chaise; - une tige télescopique (2) supportant le dossier et reliée par charnières au bras (1); - un ou plusieurs ressorts (40) agissant sur la tige verticale de façon à pousser le dossier vers l'avant; - un espaceur (44) inséré entre les parois (5) du bras horizontal; et - des dispositifs de vissage (16) pour presser les parois de la tige télescopique (2) contre les parois (5) du bras (1) et contre l'espaceur (44) de façon à verrouiller le dossier en position; les ressorts (40) sont des ressorts hélicoïdaux insérés dans l'axe de charnière (6) qui est fixée au bras (1) et à la tige télescopique (2), une des extrémités des ressorts agissant directement contre la paroi du bras (1) alors que l'autre extrémité du ressort agit contre la tige, en particulier contre l'espaceur (44) inséré sur la vis de blocage. Plusieurs lamelles à friction (10) sont disposées entre l'espaceur (44) et les parois du bras (1). Pour mettre les lamelles (10) en place et les régler, le cadre comprend une paire de dents (8, 9) obtenues dans les parois (5) du bras par découpage à la presse et emboutissage.
Aaa Ne Italy Made S.r.l.
Robic
LandOfFree
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