Hair removal device with improved coupled-disc element

Details Hair removal device with improved coupled-disc element Hair removal device with improved coupled-disc element

1990-02-26

1991-10-15

Rosenbaum, C. Fred

Surgery

Instruments

Means for removal of skin or material therefrom

452 71, A61B 1750

Patent

active

050571150

ABSTRACT:
The motor-powered depilatory device for removing skin hair is provided in a compact, efficient, hand-held unit, based on the operation of an axially rotatable hair-plucking element provided as a plurality of discs adjacently coupled in column form. By provision of a central spine comprising a pre-tensioned spring-metal wire, the discs are maintained adjacent one another under tension, while the column is bendable. When rotated axially at one end, the hair-plucking element transfers the rotation via rotational coupling of the adjacent discs in the column. Thus, even if the column is bent in an arched configuration, the rotational motion is transferred across its entire length. Preferably, the rotationally-coupled discs are made of relatively rigid plastic material, and are mechanically coupled by a set of tab-like projections on each disc surface, which engage matching recesses in adjacent discs. Alternatively, adjacent discs are made of a soft material with a high friction coefficient and are rotationally coupled by friction between them. The arched configuration of the hair-plucking element provides spaces between adjacent discs on a convex side, and hair trapped in these spaces is plucked when they close upon rotation of the hair-plucking element toward its concave side. Another embodiment features an arrangement of coupled discs having different diameters and angled edges in an arched configuration allowing placement of the spaces between discs close to the skin.

REFERENCES:
patent: 4807624 (1989-02-01), Gross et al.
patent: 4935024 (1990-06-01), Dolev

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