Bonded multi-layer graphite heat pipe
US9791704B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 20, 2015 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Feb 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/20418
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A passive heat pipe structure used in a wearable device includes a multilayer stack of graphite sheets, each sheet having a plane high thermal conductivity oriented along a first axis and a plane of lower thermal conductivity along a second axis different from the first axis. The stack has a three-dimensional shape including a length and a width where the length is longer than the width and the first axis aligns parallel to said length, the multilayer stack having a height less than the width. A plurality of bonding layers interspersed between each sheet of the multilayer stack, each bonding layer thermally coupling each sheet to a respective adjacent sheet. The bonding layers may comprise metal layers or adhesive layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.