# US 5,706,837 A · Hair bundling core and method of using the core

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- Number: US 5,706,837 A
- Document ID: US5706837A
- Status: Granted
- Kind: A
- Application number: 08/550,399
- Filed: 1995-10-30
- Granted: 1998-01-13
- Earliest claimed: 1994-07-27
- Inventors: Hidenobu Iwata
- Web page: https://patentgrep.com/patent/US5706837A

## CPC

- A45D 8/34: Hair-braid holders; Hair-plait holders
- A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING

## Abstract

A hair bundling core structure comprising an elastic cylinder made of a foamed synthetic resin having a thickness and a strength which are sufficient for facilitating the insertion and extraction of a hair setting U-shaped pin and are capable of fixing the hair by the insertion. The core structure is cut from one end face to the other thereof to have a rift.

## Claims

### Claim 1

A method of using a hair bundling core structure, which includes an elastic cylinder made of a foamed synthetic resin having a thickness and strength which are sufficient for facilitating a piercing of a hair setting U-shaped pin having pair of legs into and an extraction of the U-shaped pin from the elastic cylinder and for fixing hair to the elastic cylinder by the piercing of the U-shape pin, said elastic cylinder having a pair of end surfaces and is cut from one end surface to the other end surface to form a rift, said method comprising steps of:
setting hairs in a preset range of a head of a user into a first hair bundle having a root portion which is defined by a mass of root neighboring portions of the hairs, and binding a lower end of said first hair bundle in the root portion at a center of said preset range near roots of the hairs;
pinching the root portion at two sides of said center of the preset range with a pair of hairpins;
opening said rift to form a gap and inserting a lower portion of the root-bound, first hair bundle through the gap into a hole of the elastic cylinder to let the lower portion pass through the hole; pushing said core structure at its lower face onto an outer face of the head within said preset range; and
fixing said core structure on the head of the user with said U-shaped pin by inserting one of the legs between said hairpins and a head skin, while said core structure is being pushed, and by piercing the other leg into a lower part of said core structure so that said core structure may be provided as a hair setting base.