Wig having shape retaining element
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United States of America Patent
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-
Aug 21, 1990
Grant Date -
N/A
app pub date -
Jun 21, 1989
filing date -
Nov 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wig having a shape retaining element for preventing turning-up, distortion and so on of a wig base. This shape retaining element (12) is made of a shape memory alloy whose transformation temperature (Af point) is higher than the surrounding temperature at a location between a surface of a user's head and the wig base during a period for which the wig (10) is worn on the head. The shape retaining element is arranged in position on the side of an inner surface or an outer surface of the wig base (11). When the shape retaining element is deformed into a corrugated configuration due to several uses, the shape retaining element is heated to a temperature equal to or higher than the transformation temperature, whereby the shape retaining element is restored to a beforehand stored shape. Thus, the wig can repeatedly be worn under new condition.
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Family
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