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US 7,185,468 B2Granted
Multi-layered fire door and method for making the same
AssigneeJELD-WEN, Inc.
InventorsRandy Jon Clark, Gary Lee Koepke, Keith Lynn Lewallen, Brent David Olson, William Robert Transue
Life of this patent
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Abstract
A door has a core that includes a porous layer having a thickness and two opposing major surfaces. In one construction, the core also includes three fire-retardant layers, and two of the fire-retardant layers are separated by the porous layer. The porous layer and the fire-retardant layers are coupled together. Other constructions include one or more fire-retardant layers in balanced or unbalanced placement around the porous layer.
Claims5
A door comprising:
- a core comprising a porous layer and at least two fire-retardant layers each having a thickness, wherein the porous layer and the at least two fire-retardant layers are coupled together;
- a first exterior layer having a thickness and coupled with the core;
- a second exterior layer coupled with the core;
- and
- a grooved first pattern disposed on the first exterior layer and having a first depth, wherein the first depth penetrates the thickness of the first exterior layer and a portion of the thickness of one of the at least two fire-retardant layers.
2 more elements
A door comprising:
- a porous layer comprising a thermoplastic polymer;
- two fire-retardant layers each comprising a fiberboard;
- a first exterior layer coupled with one of the fire-retardant layers and a second exterior layer coupled with another one of the fire-retardant layers;
- and
- a first pattern formed in the first exterior layer and having a first depth and a second pattern formed in the second exterior layer having a second depth, wherein the porous layer is coupled with the two fire-retardant layers and the two fire-retardant layers are separated by the porous layer, and wherein the first depth penetrates the first exterior layer and a portion of the one fire-retardant layer.
2 more elements
A door comprising:
- a porous layer comprising a thermoplastic polymer;
- two fire-retardant layers each comprising a fiberboard;
- a first exterior layer coupled with one of the fire-retardant layers and a second exterior layer coupled with another one of the fire-retardant layers;
- and
- a first pattern formed in the first exterior layer and having a first depth and a second pattern formed in the second exterior layer having a second depth, wherein the porous layer is coupled with the two fire-retardant layers and the two fire-retardant layers are separated by the porous layer, and wherein the second depth penetrates the second exterior layer and a portion of the another fire-retardant layer.
2 more elements
Dependencies are inferred from the claim text.