Electric heating pad for seats and back-rests
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United States of America Patent
Stats
-
Dec 9, 1986
Grant Date -
N/A
app pub date -
Dec 20, 1984
filing date -
Apr 15, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
It has been found that in heating pads for seats, preferably car-seats, in which the heating pad (1 and 2) covers both seat and back-rest, an energy recoil from the back-rest may occur. The invention reduces said recoil by dimensioning the resistance wire (11) in the section (4 and 6) of the heating pad (1 and 2) covering the seat and of the resistance wire (10) in the section (3 and 5) of the heating pad (1 and 2) covering the back-rest in such a way that the ratio between the resistance of the first-mentioned resistance wire (11) and that of the last-mentioned resistance wire (10) increases when current flows through.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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