Method of constructing fire resistant enclosures
AssigneeChubb & Son's Lock and Safe Company Limited
InventorGeorge W. Dyson
Life of this patent
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Abstract
The body of a cabinet for storing temperature-sensitive articles such as magnetic discs and tapes is built by a process which involves the successive steps of (i) fabricating an internal skin; (ii) attaching so-called "phase-change" material to the skin; (iii) applying insulative polyurethane foam in-situ to the structure of step (ii); (iv) casting concrete or the like water-bearing material around the structure of step (iii); and (v) completing the outer finishing skin. Thus the conventional "double-box" structure is avoided. The door for the cabinet can be built by a similar sequence in which "phase-change" material, insulative form and water-bearing layers are applied successively to a pan forming the internal face of the door.
Claims11
A method of constructing the body of a fire-resistant enclosure for the protection of temperature-sensitive articles, which comprises the successive steps of:
- (i) providing an open box-like structure to constitute an internal skin of the body;
- (ii) applying to at least some of the external surface of said structure a layer of phase-change material (as herein defined);
- (iii) applying to the external surface of the assembly of said structure and phase-change material a layer of thermally-insulative material;
- and
- (iv) applying to the external surface of the assembly of said structure, phase-change material and thermally-insulative material a layer of water-bearing material;
- whereby the finished body comprises successive layers of said phase-change, thermally-insulative and water-bearing materials built upon said structure.
A method of constructing the door of a fire-resistant enclosure for the protection of temperature-sensitive articles, which comprises the successive steps of:
- (i) providing a structure to constitute an internal face of the door;
- (ii) applying to at least part of the external surface of said face structure a layer of phase-change material;
- (iii) applying to the external surface of the assembly of said face structure and phase-change material a layer of thermally-insulative material;
- and
- (iv) applying to the external surface of the assembly of said face structure, phase-change material and thermally-insulative material a layer of water-bearing material;
- whereby the finished door comprises successive layers of said phase-change, thermally-insulative and water-bearing materials built upon said face structure.
A method of constructing a fire-resistant enclosure for the protection of temperature-sensitive articles, which comprises constructing the body of said fire-resistant enclosure by the successive steps of providing an open box-like structure to constitute an internal skin of the body, applying to at least some of the external surface of said structure a layer of phase-change material, applying to the external surface of the assembly of said structure and phase-change material a layer of thermally-insulative material, and applying to the external surface of the assembly of said structure, phase-change material and thermally-insulative material a layer of water-bearing material, whereby the finished body comprises successive layers of said phase-change, thermally-insulative and water-bearing materials built upon said structure;
- constructing a door for said fire-resistant enclosure by the successive steps of providing a face structure to constitute an internal face of the door, applying to at least part of the external surface of said face structure a layer of phase-change material, applying to the external surface of the assembly of said face structure and phase-change material layer of thermally-insulative material, and applying to the external surface of the assembly of said face structure, phase-change material and thermally-insulative material a layer of water-bearing material, whereby the finished door comprises successive layers of said phase-change, thermally-insulative and water-bearing materials built upon said face structure;
- and uniting said body and door.
Dependencies are inferred from the claim text.