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US 5,747,140 AGranted
Flat upholstered body
OwnerSiegfried Heerklotzinventor
Life of this patent
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OwnerSiegfried Heerklotzinventor
Estimating the term…
A completely vented upholstered body of grid plates with a wave profile includes solid portions of the grid which pass through the wave extrema of its wave contour. Many of the solid portions of the grid preferably are disposed transversely to at least one wave propagation direction and, in each case, continuously over a large portion of a wavelength, at a distance from one another. There is only a limited, specified bending deformation, during which the solid portions of the grid can be deformed largely independently of one another as if they were individual spiral springs. As a result, the upholstered body has a high point elasticity despite the plate construction. By adroit dimensioning of the course of the wave thickness, an advantageous diffusion of stresses can be achieved without stress peaks. Moreover, the work of deformation is absorbed uniformly in the upholstered material. This results in a long service life of the upholstered body. A single grid plate can be used or several identical or different grid plates, which are stacked one above the other and placed loosely on top of one another, can be fixed at the edges or fixed with positive locking or positive substance locking over solid portions of the grid, which are in supportive engagement with adjacent grid plates. Elastomers, such as natural rubber and thermoplastic elastomer, spring steel or plastics come in to consideration as material.
A generally flat body to be upholstered comprising at least one grid plate made of a resilient material, said grid plate including a plurality of solid portions which form the boundaries of a plurality of grid openings, said solid portions including a plurality of spaced wave sections each having a plurality of extremea in the form of crests and valleys, and a plurality of spaced extended sections extending between said plurality of spaced wave sections, said extended sections connecting some of the extremea of one wave section to some of the extremea of a juxtaposed wave section disposed on one side of said one wave section and said extended sections connecting the other of the extremea of said one wave section to some of the extremea of a juxtaposed wave section disposed on the side of said one wave section which is opposite said one side such that said spaced wave sections and said spaced extended sections define said grid openings.
A plurality of generally flat plates to be upholstered, each of said plates being made of a resilient material, each of said grid plates including a plurality of solid portions which form the boundaries of a plurality of grid openings, said solid portions including a plurality of spaced wave sections each having a plurality of extremea in the form of crests and valleys, and a plurality of spaced extended sections extending between and connected to said plurality of spaced wave sections at said extremea such that said spaced wave sections and said spaced extended sections define said grid openings, one of said grid plates being disposed in superimposed relationship with another of said grid plates such that said one grid plate contacts said other grid plate.
At least two flat grid plates to be upholstered, each of said grid plates being made of a resilient material, each of said grid plates including a plurality of solid portions which define a grid pattern and which form the boundaries of a plurality of grid openings, said solid portion including a plurality of spaced wave sections each having a plurality of extremea in the form of crests and valleys, and a plurality of spaced extended sections extending between and connected to said plurality of spaced wave sections at said extremea such that said spaced wave sections and said spaced extended sections define said grid opening, each of said at least two grid plates having substantially the same grid pattern, one of said two grid plates being disposed in superimposed relationship with the other of said grid plates such that the crests of the wave sections of one grid plate are disposed in superimposed relationship with the valleys of the wave sections of said other grid plate.
A generally flat body to be upholstered comprising at least one grid plate made of a resilient material, said grid plate including a plurality of solid portions which form the boundaries of a plurality of grid openings, said solid portions including a plurality of spaced wave sections each having a plurality of extremea in the form of crests and valleys which are devoid of straight portions which extend in the wave propogation direction over more than one wave length, a plurality of spaced extended sections extending between said plurality of spaced wave sections, and connecting portions connecting said extended sections to one of said wave sections and to a juxtaposed wave section disposed on one side of said one wave section and also connecting said extended sections to said one wave section and to a juxtaposed wave section disposed on the side of said one wave section which is opposite said one side such that said spaced wave sections and said spaced extended sections define said grid openings.
Dependencies are inferred from the claim text.