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US 2003/0213797 A1Published application
Sheet heater
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMitsuru Yoneyama, Naohito Asami, Akira Shiratake, Norio Abe, Kazumi Nagayama
Life of this patent
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Abstract
A sheet heater structured so that heating wire is fixed to air-passing base material by sewing. This structure can provide a sheet heater that has improved durability of heating wire 2 against the load imposed on the seat during sitting, comfortable feeling of sitting in the seat, and high air-passing capability.
Claims8
A sheet heater comprising:
- an air-passing base material;
- and
- a heating wire, said heating wire being fixed to said base material by sewing.
Dependencies are inferred from the claim text.