Heater element for the inner sole of a footwear
US8291612B2 · kind B2 · utility
35Cited by
37References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2004 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Apr 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/036
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Disclosed is a breathable insole heater element (12, 40) for footwear. The heater element is formed by photochemically etching a porous metallized fabric, e.g. nickel-metallized polyester woven fabric. The heater element is embedded in or laminated in an insole for an article of footwear such as a shoe or boot. The insole may be cut to size as desired. The insole may include microencapsulated agents such as fragrances, perfumes, microbials or insect repellents. The microcapsules may be activated to release the agents due to the heat generated by the heater element in operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.