US4413869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant cabinet and method of manufacture
Assignee: Kardex Systems AG
•
Filing: 1981-03-26
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Granted: 1983-11-08
•
Expires: 2001-03-26
Abstract
Abstract A heat resistant cabinet having at least one protected compartment for storing temperature-sensitive articles. The compartment is surrounded by a heat absorbing layer and may also be surrounded by a heat barrier layer. The heat absorbing layer is a solid mixture of a heat absorbing material which becomes liquid under the influence of excessive heat and also contains an additional material which binds said liquid heat absorbing material to form a doughy or solid mass. The additional material is a water-absorbing inorganic material such as plaster of Paris, caustic lime, or cement. The heat absorbing material is a material such as sodium acetate trihydrate or sodium metasilicate.
Inventors
- 👤 Gunther Pichler
- 👤 Friedrich Rothhaas
- 👤 Hans Hock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:07
CPC Classifications
E; E05; E05G; E05G1/00; E05G1/02; E05G1/024; E05G1/06; E05G1/08; Y; Y10; Y10S; Y10S428/00; Y10S428/92
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
98 words
A heat resistant cabinet having at least one compartment for storing temperature-sensitive articles, said compartment being surrounded by a heat absorbing layer consisting essentially of a particulate or powdery mixture of a heat absorbing material having a large heat of fusion and at least about 10% by volume of a binder material, said binder material being a water absorbing inorganic material selected from the group consisting of plaster of paris, caustic lime, and cement which when the heat absorbing material becomes liquid, binds said liquid heat absorbing material to form therewith a doughy mass or a solid mass.
Claim 2
Dependent Claim
98 words
A heat resistant cabinet having at least one compartment for storing temperature-sensitive articles, said compartment being surrounded by a heat absorbing layer consisting essentially of a particulate or powdery mixture of a heat absorbing material having a large heat of fusion and at least about 10% by volume of a binder material, said binder material being a water absorbing inorganic material selected from the group consisting of plaster of paris, caustic lime, and cement which when the heat absorbing material becomes liquid, binds said liquid heat absorbing material to form therewith a doughy mass or a solid mass.
Claim 3
Dependent Claim
31 words
Cabinet according to claim 1, wherein said binder material has the property of chemically reacting with the hot liquid heat absorbing material to form therewith said doughy mass or solid mass.
Claim 4
Dependent Claim
16 words
Cabinet according to claim 1, wherein said compartment is also surrounded by a heat barrier layer.
Claim 5
Dependent Claim
13 words
Cabinet according to claim 1, wherein said binder material is plaster of Paris.
Claim 6
Dependent Claim
12 words
Cabinet according to claim 1, wherein said binder material is caustic lime.
Claim 7
Dependent Claim
11 words
Cabinet according to claim 1, wherein said binder material is cement.
Claim 8
Dependent Claim
17 words
Cabinet according to claim 4 or 5 or 6, wherein said heat absorbing material is sodium metasilicate.
Claim 9
Dependent Claim
16 words
Cabinet according to claim 4 or 5 or 6, wherein said heat absorbing material is sodium-6-metasilicate.
Claim 10
Dependent Claim
16 words
Cabinet according to claim 4 or 5 or 6, wherein said heat absorbing material is sodium-9-metasilicate.
Claim 11
Dependent Claim
18 words
Cabinet according to claim 4 or 5 or 6, wherein said heat absorbing material is sodium acetate trihydrate.
Claim 12
Dependent Claim
24 words
Cabinet according to claim 1, wherein said heat absorbing material is in particulate form and said binder material is in the form of powder.
Claim 13
Dependent Claim
29 words
Cabinet according to claim 11, wherein said mixture consists essentially of about 80% by volume of said heat absorbing material and about 20% by volume of said binder material.
Claim 14
Dependent Claim
12 words
Cabinet according to claim 1, wherein said mixture is in particulate form.
Claim 15
Dependent Claim
15 words
Cabinet according to claim 1, wherein said mixture is in the form of powder materials.
Claim 16
Dependent Claim
46 words
A method of manufacturing a cabinet according to claim 1, wherein said heat absorbing layer is filled into the space in which it is positioned surrounding said compartment while vibratory motion is imparted to the walls surrounding said space and is thereby imparted to said mixture.
Claim 17
Dependent Claim
41 words
Cabinet according to claim 1, wherein said heat absorbing material having a large heat of fusion is in an amount between about 60% and 90% by volume and said binder material is in an amount of between about 10% and 40%.
Claim 18
Dependent Claim
59 words
Cabinet according to claim 2, wherein said heat absorbing material having a large heat of fusion is in an amount between about 75% and 85% by volume and said binder material is in an amount between about 15% and 25%, and wherein said heat absorbing material is selected from the group consisting of sodium metasilicate and sodium acetate trihydrate.
Claim 19
Dependent Claim
40 words
Cabinet according to claim 7, wherein said heat absorbing material having a large heat of fusion is in an amount between about 80% and 85% by volume and said binder material is in an amount between about 15% and 20%.
Claim 20
Dependent Claim
40 words
Cabinet according to claim 8, wherein said heat absorbing material having a large heat of fusion is in an amount between about 80% and 85% by volume and said binder material is in an amount between about 15% and 20%.
Claim 21
Dependent Claim
40 words
Cabinet according to claim 9, wherein said heat absorbing material having a large heat of fusion is in an amount between about 80% and 85% by volume and said binder material is in an amount between about 15% and 20%.
Claim 22
Dependent Claim
40 words
Cabinet according to claim 10, wherein said heat absorbing material having a large heat of fusion is in an amount between about 80% and 85% by volume and said binder material is in an amount between about 15% and 20%.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |