Chairs and seats – Movable bottom – Interconnected with back for relative concurrent movement
Patent
1991-07-11
1992-07-21
Dorner, Kenneth J.
Chairs and seats
Movable bottom
Interconnected with back for relative concurrent movement
297151, 297 26, 280649, A47D 100, A47C 100
Patent
active
051317192
ABSTRACT:
Disclosed herein is a height-controllable childcare chair (1). This chair first comprises a pair of side walls (6) which are located on both sides of a seat portion (2). A pair of horizontally extending side bars (8), which are parallel to each other, are fixed to the respective side walls (6). A pair of first leg members (11) are rotatably mounted on the respective side walls (6). A pair of sliders (14) are mounted on the respective side bars (8) to be slidable along the side bars (8). A pair of second leg members (29) are rotatably mounted on the respective sliders (14). Respective intermediate portions of the second leg members (29) are rotatably coupled to respective intermediate portions of the first leg members (11). Wheels (13, 31) are mounted on respective lower end portions of the leg members (11, 29). A plurality of engaging holes (9a-9h) are longitudinally distributed along each side bar (8). Each slider (14 ) comprises a rotatable control lever (3) which is provided on its one end with an engaging projection (26) for engaging with a selected one of the plurality of engaging holes (9a-9h). This control lever (3) is urged by a spring (27) to be rotated in a direction for allowing engagement of the engaging projection (26) with the selected one of the engaging holes (9a-9h).
REFERENCES:
patent: 968297 (1910-08-01), Washburn
patent: 2902084 (1959-09-01), Stevens
patent: 4251107 (1981-02-01), Sato
patent: 4359242 (1982-11-01), Gerken et al.
patent: 4567964 (1986-02-01), Kassai
Aprica Kassai Kabushikikaisha
Dorner Kenneth J.
Fasse W. G.
Gardner James M.
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