US4446916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-absorbing heat sink
Assignee: Individual
•
Filing: 1981-08-13
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Granted: 1984-05-08
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Expires: 2001-08-13
Abstract
Abstract An improved heat sink device for transferring heat from a heat generator to lower-temperature surroundings comprising a device-embedded compound that absorbs heat, delaying temperature rise in the heat generator, at a specific temperature by melting or entering into an endothermic chemical change or reaction and which is absorbed and retained within the device by a mesh or fabric of a multiplicity of fibers.
Inventors
- 👤 Claude Q. C. Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:29
CPC Classifications
C; C22; C22C; C22C47/00; C22C47/02; C22C47/06; C22C47/062; C22C47/066; F; F28; F28D; F28D20/00; F28D20/02; F28D20/023; H; H10; H10W; H10W40/00; H10W40/70; H10W40/73; H10W40/735; B; B22; B22F; B22F2998/00; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10S; Y10S165/00; Y10S165/902
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
81 words
An improved heat sink device for transferring heat from a heat generator to lower-temperature surroundings by radiation, covection, and conduction, wherein the improvement comprises: a device-embedded compound that absorbs heat at a specific temperature, delaying temperature rise in the heat generator; and a multiplicity of fibers to absorb and retain said compound within the device, both below and above said specific temperature, said fibers being partially exposed as an outer surface of the device providing heat transfer by radiation and convection.
Claim 2
Dependent Claim
81 words
An improved heat sink device for transferring heat from a heat generator to lower-temperature surroundings by radiation, covection, and conduction, wherein the improvement comprises: a device-embedded compound that absorbs heat at a specific temperature, delaying temperature rise in the heat generator; and a multiplicity of fibers to absorb and retain said compound within the device, both below and above said specific temperature, said fibers being partially exposed as an outer surface of the device providing heat transfer by radiation and convection.
Claim 3
Dependent Claim
50 words
A heat sink as in claim 1 wherein said compound melts at said specific temperature absorbing without temperature rise a quantity of heat proportional to the latent heat of fusion of the compound, and said multiplicity of fibers comprises metallic wire structured as a mesh of one or more layers.
Claim 4
Dependent Claim
29 words
A heat sink as in claim 2 wherein the constituents of said compound are selected from the group consisting of lead, tin, bismuth, gold, silver, cadmium, antimony, and mercury.
Claim 5
Dependent Claim
20 words
A heat sink as in claim 3 wherein said compound is a tertiary eutectic alloy comprising bismuth, lead, and tin.
Claim 6
Dependent Claim
52 words
A heat sink as in claim 1 wherein said compound is a wax that melts at said specific temperature absorbing without temperature rise a quantity of heat proportional to the latent heat of fusion of the wax and said multiplicity of fibers are structured as a cloth of one or more layers.
Claim 7
Dependent Claim
21 words
A heat sink as in claim 5 wherein said cloth is selected from the group consisting of cotton, nylon, and linen.
Claim 8
Dependent Claim
26 words
A heat sink as in claim 1 wherein said compound undergoes an endothermic chemical change at the said specific temperature absorbing heat without appreciable temperature rise.
Claim 9
Dependent Claim
24 words
A heat sink as in claim 7 wherein said compound can undergo repeated endothermic chemical change when temperature-cycled above and below said specific temperature.
Claim 10
Dependent Claim
103 words
An improved heat sink device for transferring heat from a heat generator to lower-temperature surroundings, wherein the improvement comprises: a device-embedded compound formed in filaments that melt at a specific temperature absorbing without temperature rise a quantity of heat proportional to the latent heat of fusion of said compound delaying temperature rise in the heat generator, said filaments first being wrapped and twisted with many smaller diameter metallic wires to form yarn which is then woven into a mesh used in at least one layer, said metallic wires absorbing and retaining said compound within the device, both below and above said specific temperature.
Claim 11
Dependent Claim
103 words
An improved heat sink device for transferring heat from a heat generator to lower-temperature surroundings, wherein the improvement comprises: a device-embedded compound formed in filaments that melt at a specific temperature absorbing without temperature rise a quantity of heat proportional to the latent heat of fusion of said compound delaying temperature rise in the heat generator, said filaments first being wrapped and twisted with many smaller diameter metallic wires to form yarn which is then woven into a mesh used in at least one layer, said metallic wires absorbing and retaining said compound within the device, both below and above said specific temperature.
Claim 12
Dependent Claim
104 words
An improved heat sink device for transferring heat from a heat generator to lower-temperature surroundings, wherein the improvement comprises: a device-embedded metallic compound formed in filaments that melt at a specific temperature absorbing without temperature rise a quantity of heat proportional to the latent heat of fusion of said compound delaying temperature rise in the heat generator, said filaments first being wrapped and twisted with many smaller diameter metallic wires to form yarn which is then woven into a mesh used in at least one layer, said metallic wires absorbing and retaining said compound within the device, both below and above said specific temperature.
Claim 13
Dependent Claim
104 words
An improved heat sink device for transferring heat from a heat generator to lower-temperature surroundings, wherein the improvement comprises: a device-embedded metallic compound formed in filaments that melt at a specific temperature absorbing without temperature rise a quantity of heat proportional to the latent heat of fusion of said compound delaying temperature rise in the heat generator, said filaments first being wrapped and twisted with many smaller diameter metallic wires to form yarn which is then woven into a mesh used in at least one layer, said metallic wires absorbing and retaining said compound within the device, both below and above said specific temperature.
Claim 14
Dependent Claim
29 words
A heat sink as in claim 10 wherein the constituents of said compound are selected from the group consisting of lead, tin, bismuth, gold, silver, cadmium, antimony, and mercury.
Claim 15
Dependent Claim
20 words
A heat sink as in claim 11 wherein said compound is a tertiary eutectic alloy comprising bismuth, lead, and tin.
References Cited (Backward Citations)
CA600823A
Cited
US2677367A
Cited
FR1153115A
Cited
US2964688A
Cited
US3780356A
Cited
US3972821A
Cited
US4003426A
Cited
US4057101A
Cited
US4135371A
Cited
US4299715A
Cited
US4187189A
Cited
US4233645A
Cited
US4341262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |