Seat backs
First Claim
1. A seat back core comprising:
- a molded plastic sheet having a forward side and a rear side, a central zone of said sheet having a bowed region that is bowed forwardly;
plural fixing points on the rear side of said sheet that define a top and a bottom of said bowed region and that are for attachment to a rigid seat member, said bowed region being more resistant to bending over its upper part than its lower part, said bowed region is arranged to ripple in response to urging by a seated user'"'"'s back; and
side wings directly connected to said bowed region at narrow zones of weakness, said side wings being symmetrically disposed on either side of a vertical center line and generally parallel to the center line, said side wings being divided into generally horizontal sections each capable of flexure with respect to an adjacent section and being inclined forwardly.
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Accused Products
Abstract
The core (1) of a seat back, which will be upholstered to form the complete back, is a moulded plastics sheet bowed forwardly and with attachment points (12) near top and bottom for securing to a rigid support. The sheet is constructed to be stiffer over its upper portion then over the lower and, when secured, to be able to ripple or alter its curvature between the attachment points. It may have wings (2) inclining forwardly at each side with closed end slots (3) between the wings (2) and the central zone (8) of the core. The wings can be divided into generally horizontal sections carried by integrally moulded transverse ribs (4) spanning the slots (3), the division between sections being by slots (13) or narrow membranes (6). The top of the core may also be divided into side-by-sections, the division being by slots (14) or narrow membranes (11).
122 Citations
20 Claims
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1. A seat back core comprising:
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a molded plastic sheet having a forward side and a rear side, a central zone of said sheet having a bowed region that is bowed forwardly; plural fixing points on the rear side of said sheet that define a top and a bottom of said bowed region and that are for attachment to a rigid seat member, said bowed region being more resistant to bending over its upper part than its lower part, said bowed region is arranged to ripple in response to urging by a seated user'"'"'s back; and side wings directly connected to said bowed region at narrow zones of weakness, said side wings being symmetrically disposed on either side of a vertical center line and generally parallel to the center line, said side wings being divided into generally horizontal sections each capable of flexure with respect to an adjacent section and being inclined forwardly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A seat back core comprising:
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a plastic sheet having a forward side and a rear side, said sheet being bowed forwardly and arranged to ripple in a central bowed region in response to urging by a seated user'"'"'s back; plural fixing points on the rear side of said sheet that define a top and a bottom of said bowed region; connection members extending from said bowed region; side wings directly connected to said bowed region by said connection members, said side wings being forwardly curved and being divided into generally horizontal sections that each flex with respect to an adjacent one of said generally horizontal sections; and a plurality of transverse ribs, a respective one of said plural ribs extending from a central portion of a corresponding one of said horizontal sections across said bowed region to an opposing central portion of another one of said horizontal sections.
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14. A seat back core comprising:
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a plastic sheet having a forward side and a rear side, said sheet being bowed forwardly and arranged to ripple in a central bowed region in response to urging by a seated user'"'"'s back; plural fixing points on the rear side of said sheet that define a top and a bottom of said bowed region; and side wings directly connected to said bowed region, said side wings being forwardly curved and being divided into generally horizontal sections that each flex with respect to an adjacent one of said generally horizontal sections. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification