Metal encased graphite layer heat pipe
First Claim
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1. An apparatus comprising:
- heat producing electrical components;
a multilayer stack of graphite sheets, individual graphite sheets having a plane of high thermal conductivity along a first axis and a plane of lower thermal conductivity along a second axis, the multilayer stack having a three-dimensional shape including a length and a width, and the first axis is aligned parallel to said length, the multilayer stack having a height less than the width;
a first rigid metal structure surrounding the multilayer stack of graphite sheets, the first rigid metal structure encasing the multilayer stack along the length, width, and height of the multilayer stack; and
a thermal connector having a first end in contact with the heat producing electrical components and a second end in contact with the encased multilayer stack of graphite sheets, the thermal connector conducting heat from the heat producing electrical components to the encased multilayer stack of graphite sheets.
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Abstract
A metal encased multilayer stack of graphite sheets used as a passive thermal conductor. In the stack, each sheet has a plane high thermal conductivity along a first axis and a plane of lower thermal conductivity along a second axis. The stack is created to have a three-dimensional shape including a length and a width, and the first axis is aligned parallel to said length, the multilayer stack having a height less than the width. A first metal structure surrounds the multilayer stack of graphite sheets, with the metal structure encasing the multilayer stack along the length, width and height of the multilayer stack.
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Citations
20 Claims
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1. An apparatus comprising:
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heat producing electrical components; a multilayer stack of graphite sheets, individual graphite sheets having a plane of high thermal conductivity along a first axis and a plane of lower thermal conductivity along a second axis, the multilayer stack having a three-dimensional shape including a length and a width, and the first axis is aligned parallel to said length, the multilayer stack having a height less than the width; a first rigid metal structure surrounding the multilayer stack of graphite sheets, the first rigid metal structure encasing the multilayer stack along the length, width, and height of the multilayer stack; and a thermal connector having a first end in contact with the heat producing electrical components and a second end in contact with the encased multilayer stack of graphite sheets, the thermal connector conducting heat from the heat producing electrical components to the encased multilayer stack of graphite sheets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wearable device, comprising:
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a mounting structure including electrical components; a multilayer stack of graphite sheets thermally bonded to the electrical components, individual graphite sheets of the multilayer stack having a higher thermal conductivity along a first axis and a lower thermal conductivity along a second axis, the multilayer stack having a three-dimensional shape including a length and a width where the first axis aligns parallel to said length, the multilayer stack having a height less than the width; and a rigid metal structure encasing the multilayer stack to create a hermetic vacuum around the multilayer stack, the rigid metal structure encasing the multilayer stack along the length, width, and height of the multilayer stack. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A head mounted display, comprising:
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electrical components comprising control circuits which produce heat; an optical mounting structure including the heat producing electrical components, the optical mounting structure housing a display optical system coupled to the heat producing electrical components, and first and second temple arms extending away from the heat producing electrical components and the display optical system; a metal encased multilayer stack of graphite sheets and thermally bonded to the heat producing electrical components and to an exterior surface of the optical mounting structure, each sheet of the graphite sheets having a plane high thermal conductivity along a first axis and a lower thermal conductivity along a second axis, the multilayer stack having a three-dimensional shape including a length and a width and the first axis aligns parallel to said length, the multilayer stack having a height less than the width, a metal structure encasing the multilayer stack along the length, width and height of the multilayer stack; and a thermal connector having a first end in contact with the heat producing electrical components and a second end in contact with the metal encased multilayer stack of graphite sheets, the thermal connector conducting heat from the heat producing electrical components to the metal encased multilayer stack of graphite sheets. - View Dependent Claims (18, 19, 20)
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Specification