US4263365A — Fire-resistant safe and panel

Claim 1

Independent Claim 146 words

A heat absorbing body which in solid hardened form is capable of absorbing substantial amounts of heat by providing relatively and unusually large quantities of absorbed water capable of being vaporized by heat and thus absorbing the quantity of heat required to vaporize the absorbed water, said body in its final solidified hardened state ready for use comprising a mixture containing, by weight, not less than 29% nor more than 70% of water, and not less than 33% nor more than 54% dry weight of Portland cement as primary ingredients, and also including as secondary ingredients not less than 1% nor more than 10% dry weight of recycled cellulose fibers having high water absorption and retention capacity, and sufficient foaming agent to cause foaming of the body, before hardening thereof, to a density of not less than 40 nor more than 80 pounds per cubic foot.

Claim 2

Dependent Claim 146 words

A heat absorbing body which in solid hardened form is capable of absorbing substantial amounts of heat by providing relatively and unusually large quantities of absorbed water capable of being vaporized by heat and thus absorbing the quantity of heat required to vaporize the absorbed water, said body in its final solidified hardened state ready for use comprising a mixture containing, by weight, not less than 29% nor more than 70% of water, and not less than 33% nor more than 54% dry weight of Portland cement as primary ingredients, and also including as secondary ingredients not less than 1% nor more than 10% dry weight of recycled cellulose fibers having high water absorption and retention capacity, and sufficient foaming agent to cause foaming of the body, before hardening thereof, to a density of not less than 40 nor more than 80 pounds per cubic foot.

Claim 3

Dependent Claim 14 words

The invention defined in claim 1, wherein said secondary ingredients also include sodium sulfate.

Claim 4

Dependent Claim 26 words

The invention defined in claim 2, wherein the total of all said secondary ingredients are not more than 65 percent by weight of the total mixture.

Claim 5

Dependent Claim 39 words

The invention defined in claim 2, wherein said sodium sulfate is originally present in said mixture in anhydrous form and in a quantity not less than 15 percent nor more than 35 percent by weight of the total mixture.

Claim 6

Dependent Claim 34 words

The invention defined in claim 1, wherein said mixture has approximately the following composition by weight: ______________________________________ Water 50.0% Cellulose fibers 1.5% Portland cement 45.5% Foaming agent 2.3% 37% Sodium silicate 0.7% 100.0% ______________________________________

Claim 7

Dependent Claim 38 words

The invention defined in claim 1, wherein said mixture has approximately the following composition by weight: ______________________________________ Water 49.1% Polypropylene plastic fiber 0.5% Cellulose fibers 1.5% Portland cement 44.6% Foaming agent 3.6% 37% Sodium silicate 0.7% 100.0% ______________________________________

Claim 8

Dependent Claim 38 words

The invention defined in claim 1, wherein said mixture has approximately the following composition by weight: ______________________________________ Water 37.6% Cellulose fibers 1.1% Portland cement 34.1% Foaming agent 1.7% 37% Sodium silicate 0.5% Anhydrous sodium sulfate 25.0% 100.0% ______________________________________

Claim 9

Dependent Claim 40 words

The invention defined in claim 1, wherein said mixture has approximately the following composition by weight: ______________________________________ Water 37.3 Cellulose fibers 1.1% Polypropylene fibers 0.5% Portland cement 34.0% Foaming agent 1.7% Sodium silicate 0.5% Anhydrous sodium sulfate 24.9% 100.0% ______________________________________

Claim 10

Dependent Claim 44 words

The invention defined in claim 1, wherein said mixture has approximately the following composition by weight: ______________________________________ Water 37.1% Cellulose fibers 1.1% Steel fibers 1.8% Polypropylene fibers 0.3% Portland cement 33.8% Sodium silicate 0.5% Anhydrous sodium sulfate 24.8% 8% Foaming agent 0.6% 100.0% ______________________________________

Claim 11

Dependent Claim 51 words

The invention defined in claim 1, further comprising an inner liner member and an outer jacket member confining said heat absorbing body between them, said members being shaped to form part of a fire-resistant container such as a safe for holding valuables to be protected against the heat of a fire.

Claim 12

Dependent Claim 27 words

The invention defined in claim 10, wherein said outer jacket is of plastic material which may burn away during the progress of a fire surrounding said container.

Claim 13

Dependent Claim 14 words

The invention defined in claim 10, wherein said outer jacket is of strong metal.

Claim 14

Dependent Claim 64 words

The invention defined in claim 10, wherein the fibers in said heat absorbing body include a significant quantity of cellulose fibers which absorb water and thus retain water in said body and which also tend to plug any minor leaks in said inner liner member and outer jacket member as said mixture is poured into a space between said liner member and jacket member.

Claim 15

Dependent Claim 47 words

The invention defined in claim 1, further comprising facing members covering and enclosing said heat absorbing body within them, said facing members and the enclosed heat absorbing body being shaped to form a panel useful for general construction purposes in constructing walls, ceilings, shelves, containers, and furniture.

Claim 16

Dependent Claim 30 words

The invention defined in claim 14, wherein said mixture from which said heat absorbing body is formed has approximately the ingredients in the proportions by weight specified in claim 13.

Claim 17

Dependent Claim 43 words

The invention defined in claim 1, wherein said heat absorbing body is in the form of a structure for absorbing and re-radiating heat, to absorb solar heat during a hot day and to release and re-radiate the absorbed heat during a cool night.

Claim 18

Dependent Claim 43 words

The invention defined in claim 7, wherein said heat absorbing body is in the form of a structure for absorbing and re-radiating heat, to absorb solar heat during a hot day and to release and re-radiate the absorbed heat during a cool night.

Claim 19

Dependent Claim 173 words

The process of making a shaped heat absorbing article from a flowable composition which is pourable into a confined space and which will solidify in such space to provide a body containing and retaining a relatively and unusually large quantity of absorbed water capable of absorbing a large quantity of heat required to vaporize such retained water, said process comprising the steps of subjecting to the action of a hammer mill fibrous products chosen from the group consisting of newspaper, kraft paper, and wood chips, to produce therefrom cellulose fiber masses, mixing the fiber masses with other ingredients including water and Portland cement and a foaming material in such proportions as to provide a flowable composition which, in its flowable state ready to be poured, contains by weight of the entire composition, not less than 29% nor more than 70% of water, and not less than 1% of said cellulose fiber masses, and pouring said composition into a confined space and allowing it to solidify therein without subjecting it to any dewatering action.

Claim 20

Dependent Claim 173 words

The process of making a shaped heat absorbing article from a flowable composition which is pourable into a confined space and which will solidify in such space to provide a body containing and retaining a relatively and unusually large quantity of absorbed water capable of absorbing a large quantity of heat required to vaporize such retained water, said process comprising the steps of subjecting to the action of a hammer mill fibrous products chosen from the group consisting of newspaper, kraft paper, and wood chips, to produce therefrom cellulose fiber masses, mixing the fiber masses with other ingredients including water and Portland cement and a foaming material in such proportions as to provide a flowable composition which, in its flowable state ready to be poured, contains by weight of the entire composition, not less than 29% nor more than 70% of water, and not less than 1% of said cellulose fiber masses, and pouring said composition into a confined space and allowing it to solidify therein without subjecting it to any dewatering action.

Claim 21

Dependent Claim 70 words

The invention defined in claim 18, wherein said fiber masses are of a character to absorb water relatively slowly, so that when said composition is first mixed, much of the water therein will be available to enhance the flowability of the composition, and after the composition has been poured into the confined space, it will become stiffer at least partly because of the absorption of water into said fiber masses.

Claim 22

Dependent Claim 42 words

The invention defined in claim 18, further comprising the step of mixing sodium sulfate in not fully hydrated form into said composition before the pouring thereof, and providing sufficient water in the composition to cause the sodium sulfate to become hydrated therein.

Claim 23

Dependent Claim 33 words

The invention defined in claim 18, further comprising the step of mixing anhydrous sodium sulfate into said composition, and providing sufficient water in the composition to cause the sodium sulfate to become hydrated.

Claim 24

Dependent Claim 110 words

An energy saving construction material capable of absorbing significant quantities of solar heat during a hot day and releasing and re-radiating a significant amount of the absorbed heat during a cool night, said material comprising a substantially solidified composition whose principal ingredients are foamed cementitious material, recycled cellulose fibers, sodium sulfate, and water, the cellulose fibers and sodium sulfate serving to retain water in the form of absorbed and/or chemically bonded water, the cellulose fibers and sodium sulfate being present in sufficient quantity so that the total water content of the solidified composition, including absorbed and chemically bonded water, is not less than about 29% by weight of the composition.

Claim 25

Dependent Claim 110 words

An energy saving construction material capable of absorbing significant quantities of solar heat during a hot day and releasing and re-radiating a significant amount of the absorbed heat during a cool night, said material comprising a substantially solidified composition whose principal ingredients are foamed cementitious material, recycled cellulose fibers, sodium sulfate, and water, the cellulose fibers and sodium sulfate serving to retain water in the form of absorbed and/or chemically bonded water, the cellulose fibers and sodium sulfate being present in sufficient quantity so that the total water content of the solidified composition, including absorbed and chemically bonded water, is not less than about 29% by weight of the composition.

Claim 26

Dependent Claim 29 words

The invention defined in claim 22, further comprising a covering layer of moisture barrier material covering and confining at least the major part of the surface of said composition.

Claim 27

Dependent Claim 25 words

The invention defined in claim 22, wherein sodium sulfate is present to the extent of not less than about 25% by weight of the composition.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1984-04-20	1984-10-20	1985-04-21	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1988-04-20	1988-10-20	1989-04-21	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1992-04-20	1992-10-20	1993-04-21	$7700.00	Window Closed / Lapsed

Fire-resistant safe and panel

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