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US 7,155,871 B1Granted
Floor plank
AssigneeTru Woods Limited
InventorsNorman Stone, Song Zhengxing
Life of this patent
Estimating the term…
Abstract
The floor plank is a laminate of two layers of flexible plastic sheet material laminated together in offset relationship to define an offset marginal portion for each of the layers. Each of the offset marginal portions have oppositely facing adhesive coated surfaces. A foam layer and/or a fiberglass sheet can also be included in the laminate structure of the floor plank. The floor plank can conform to surface contours of a floor base. The bottom layer of the floor plank, whether it is plastic sheet or foam, is conformable to surface irregularities of the floor base. A one piece releasable packaging device covers the oppositely facing adhesive coated surfaces of the offset marginal portions.
Claims21
A floor plank comprising,
- a) a first layer of flexible plastic sheet material having a first polygonal shape with at least two side edges, a first upper surface with a design pattern and a first lower surface, the first upper surface with the design pattern constituting the top surface of the floor plank,
- b) a second layer of flexible plastic sheet material having a second polygonal shape with at least two side edges, a second upper surface and a second lower surface,
- c) said first and second layers being laminated together in offset relationship, and wherein the first lower surface of the first layer contacts the second upper surface of the second layer,
- d) the offset lamination of said first and second layers defining a first offset marginal portion of said first layer and a second offset marginal portion of said second layer, said first marginal portion of said first layer extending beyond at least one of the side edges of said second layer, and said second marginal portion of said second layer extending beyond at least one of the side edges of said first layer,
- e) said first offset marginal portion having a first marginal lower surface that is part of the first lower surface of said first layer, and said second offset marginal portion having a second marginal upper surface that is a part of the second upper surface of said second layer, the first marginal lower surface and the second marginal upper surface having an exposed adhesive coating,
- f) the first and second layers having respective predetermined thicknesses to enable the laminate of the first and second layers to have a flexibility that permits said laminate to conform to surface contours of a floor base upon which the floor plank is laid,
- g) the plastic sheet material of said second layer having a predetermined yieldability to surface irregularities of the floor base upon which the floor plank is laid, such that said second layer, when lying in flat contact on the floor base can conform to surface irregularities of the floor base.
4 more elements
A floor plank comprising,
- a) a first layer of plastic sheet material having a first polygonal shape with at least two side edges, a first upper surface and a first lower surface,
- b) a second layer of plastic sheet material having a second polygonal shape with at least two side edges, a second upper surface and a second lower surface,
- c) said first and second layers being laminated together in offset relationship, and wherein the first lower surface of the first layer contacts the second upper surface of the second layer,
- d) the offset lamination of said first and second layers defining a first offset marginal portion of said first layer and a second offset marginal portion of said second layer, said first marginal portion of said first layer extending beyond at least one of the side edges of said second layer, and said second marginal portion of said second layer extending beyond at least one of the side edges of said first layer,
- e) said first offset marginal portion having a first marginal lower surface that is part of the first lower surface of said first layer, and said second offset marginal portion having a second marginal upper surface that is a part of the second upper surface of said second layer, the first marginal lower surface and the second marginal upper surface having an exposed adhesive coating,
- f) a releasable cover member for covering the adhesive coated first marginal lower surface of said first offset marginal portion and the adhesive coated second marginal upper surface of said second offset marginal portion, said releasable cover member comprising one continuous strip of release material extending on the exposed adhesive coating of said first marginal lower surface and extending on the second marginal upper surface to cover the exposed adhesive coating of said first and second offset marginal portions, whereby said one continuous strip of release material covers the exposed adhesive coated surfaces of the first and second marginal portions.
3 more elements
Dependencies are inferred from the claim text.