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US4446916A Expired / Lapsed US ⏱️ 0.0 years remaining

Heat-absorbing heat sink

Assignee: Individual
•
Filing: 1981-08-13
•
Granted: 1984-05-08
•
Expires: 2001-08-13
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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
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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

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