Apparatus and method for controlling temperature with a multimode heat pipe element
US7849524B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2006 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Jun 25, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/285
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A helmet has an outer shell, an inner lining configured for thermal communication with a wearer's head, an intermediary layer disposed between the outer shell and the inner lining with a layer of insulating material with a plurality of passageways therein and a cavity defined by the outer shell and the outer surface of the intermediary layer, and a fluid contained between the outer shell and the inner lining. In another variation, the insulating material includes a shape memory polymer operable to change the size of one or more of the plurality of passageways when activated. In yet another variation, the helmet has one or more selectively closeable pores in its outer shell and may have a fixed or detachable fluid reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.