US4283464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated composite metallic heat-transmitting plate unit
Assignee: Semi-Alloys Inc
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Filing: 1979-05-08
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Granted: 1981-08-11
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Expires: 1999-05-08
Abstract
Abstract A prefabricated composite metallic plate unit for transmitting heat from a heat source to a heat-absorbing medium and having a relatively high heat-transfer coefficient comprises a pair of high-tensile-strength plate members of a cobalt-nickel-iron or similar type alloy having a temperature coefficient of expansion of about 6.2x10-6/ DEG C. over a temperature range of about 30 DEG C. to 550 DEG C. and a tensile strength of at least 35 kg/mm2. A plurality of holes extend through each of the plate members and have an aggregate area of about 70% of the surface areas thereof, such holes numbering about 2000 per square inch. A layer of relatively malleable metallic material is interposed between the plate members and fills the holes. Such metallic material is a metal of the group consisting of copper, aluminum, gold, silver, and an alloy of any of such metals. The resulting composite metallic plate unit has a heat-transfer coefficient of at least about 0.3 cal./cm2/cm/sec./ DEG C.
Inventors
- 👤 Norman Hascoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:01
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/087; F28F13/00; F28F13/14; H; H10; H10W; H10W40/00; H10W40/20; H10W40/25; H10W40/257; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12347; Y10T428/12486; Y10T428/12493; Y10T428/12528; Y10T428/24; Y10T428/24174
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 words
A prefabricated composite metallic plate unit for transmitting heat from a heat source to a heat-absorbing medium, having opposed planar surfaces adapted individually to engage the heat source and the heat-absorbing medium, and having a relatively high heat-transfer coefficient, said plate unit comprising: a pair of high-tensile-strength metallic plate members having a temperature coefficient of expansion approximately the same as that of said heat source; a plurality of holes extending through each of said members; and a layer of relatively malleable metallic material interposed between said members and filling said holes and having a heat-transfer coefficient of at least about 0.3 cal./cm 2 /cm/sec./°C.
Claim 2
Dependent Claim
104 words
A prefabricated composite metallic plate unit for transmitting heat from a heat source to a heat-absorbing medium, having opposed planar surfaces adapted individually to engage the heat source and the heat-absorbing medium, and having a relatively high heat-transfer coefficient, said plate unit comprising: a pair of high-tensile-strength metallic plate members having a temperature coefficient of expansion approximately the same as that of said heat source; a plurality of holes extending through each of said members; and a layer of relatively malleable metallic material interposed between said members and filling said holes and having a heat-transfer coefficient of at least about 0.3 cal./cm 2 /cm/sec./°C.
Claim 3
Dependent Claim
44 words
A heat-transmitting metallic plate unit in accordance with claim 1 in which each of said plate members is of a cobalt-nickel-iron alloy having a temperature coefficient of expansion of about 6.2×10 -6 /°C. over a temperature range of about 30° C. to 550° C.
Claim 4
Dependent Claim
51 words
A heat-transmitting metallic plate unit in accordance with claim 1 in which each of said plate members is an alloy consisting substantially of 42% nickel and 58% iron and having a temperature coefficient of expansion of about 6.9×10 -6 /°C. over a temperature range of about 30° C. to 550° C.
Claim 5
Dependent Claim
29 words
A heat-transmitting metallic plate unit in accordance with claim 1 in which each of said plate members has a tensile strength of at least about 35 kg/mm 2 .
Claim 6
Dependent Claim
36 words
A heat-transmitting metallic plate unit in accordance with claim 1 in which the holes extending through the plate members are an aggregate area of from 15% to 80% of the surface areas of said plate members.
Claim 7
Dependent Claim
34 words
A heat-transmitting metallic plate unit in accordance with claim 1 in which the holes extending through the plate members have an aggregate area of about 70% of the surface areas of said plate members.
Claim 8
Dependent Claim
27 words
A heat-transmitting metallic plate unit in accordance with claim 1 in which the holes extending through the plate members number from 5 to 2000 per square inch.
Claim 9
Dependent Claim
25 words
A heat-transmitting metallic plate unit in accordance with claim 1 in which the holes extending through the plate members number about 2000 per square inch.
Claim 10
Dependent Claim
36 words
A heat-transmitting metallic plate unit in accordance with claim 1 in which said malleable metallic material is a metal of the group consisting of copper, aluminum, gold, silver and an alloy of any of such metals.
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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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |