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US 7,168,377 B2Granted
Wig making needle
AssigneePropia Co., Ltd.
InventorKohki Fukuyama
Life of this patent
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AssigneePropia Co., Ltd.
InventorKohki Fukuyama
Estimating the term…
A vertically reciprocatable needle (41) that is extremely fine in its lengthwise direction, having a leading end portion of a triangular pyramidal shape. Edges (41b) are formed on a periphery of the leading end portion, and an engaging portion (41c) is formed at a base thereof. The engaging portion comprises a recess (41d) and a tongue (41e) covering the recess. Below the engaging portion, a tapered guide surface (41f) continues straight from a point on a periphery of the needle to the recess. The recess is recessed in a needle axial direction. The tongue has a diameter smaller than the maximum diameter of the guide surface. The artificial hair may be hooked by the engaging portion during vertical movement of the needle, which assures relative movement of the needle at a pitch or width of high accuracy. Accordingly, the transplanting pitch of the artificial hair is controlled with high accuracy.
A needle for manufacturing a wig, said needle to be used in an automated hair-transplanting apparatus for manufacturing a wig, said needle being extremely fine in its lengthwise direction and having a gimlet-shaped leading end portion provided with at least one edge on a periphery thereof and with an engaging portion at a base thereof, wherein there is a tapered guide surface extending from said engaging portion toward another end opposite to said leading end portion, said guide surface continuing straight from a point on a periphery of the needle to a recess of said engaging portion, said needle comprising a pair of needles of the same shape which vertically move together with respect to a base, said needle being supported at two points.
Dependencies are inferred from the claim text.