Hair setting roller
First Claim
1. In a hair setting roller for use with apparatus having a pair of laterally spaced electric supply contacts and a permanent magnet between them, a dielectric cylinder, an electrical resistance magnetic heating element encircling the cylinder and secured thereto and adapted to be attracted by said magnet, and circular electric contacts electrically connected to the ends of said element, said contacts encircling the opposite ends of said cylinder in spaced relation with said element for engaging said supply contacts while said magnet overcomes a force tending to separate said roller and magnet, whereby to heat said element electrically, said resistance heating element having a magnetic permeability that decreases as its temperature increases until the attraction of the magnet and said element for each other becomes weaker than said separating force acting on the roller.
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Accused Products
Abstract
A hair setting roller includes a dielectric cylinder encircled by an electrical resistance magnetic heating element secured to it and adapted to be attracted by a permanent magnet mounted in apparatus having a pair of laterally spaced electric supply contacts. Electrically connected to the opposite ends of the heating element are electric contacts for engaging the supply contacts while the magnet overcomes a force tending to separate the roller and magnet, whereby to heat the heating element electrically. The heating element has a magnetic permeability that decreases as its temperature increases until the attraction of the magnet for the device becomes weaker than the separating force acting on the roller.
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Citations
8 Claims
- 1. In a hair setting roller for use with apparatus having a pair of laterally spaced electric supply contacts and a permanent magnet between them, a dielectric cylinder, an electrical resistance magnetic heating element encircling the cylinder and secured thereto and adapted to be attracted by said magnet, and circular electric contacts electrically connected to the ends of said element, said contacts encircling the opposite ends of said cylinder in spaced relation with said element for engaging said supply contacts while said magnet overcomes a force tending to separate said roller and magnet, whereby to heat said element electrically, said resistance heating element having a magnetic permeability that decreases as its temperature increases until the attraction of the magnet and said element for each other becomes weaker than said separating force acting on the roller.
Specification