# US 5,699,814 A · Curved toothed hairclip

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- Number: US 5,699,814 A
- Document ID: US5699814A
- Status: Granted
- Kind: A
- Application number: 08/612,325
- Filed: 1996-03-07
- Granted: 1997-12-23
- Earliest claimed: 1995-09-21
- Assignees: C.S.P. Diffusion, societe anonyme
- Inventors: Christian Potut
- Web page: https://patentgrep.com/patent/US5699814A

## CPC

- A45D 8/30: with comb-like prongs
- 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 curved toothed hairclip comprises two elongate branches hinged together at their first ends about a transverse hinge axis and separably fastenable together at their second ends. Each branch has curved teeth extending laterally from the first lateral edge, curving towards the other branch and interdigitated with the curved teeth of the other branch. This improves the retention of the hair in the hairclip.

## Claims

### Claim 1

Hairclip having first and second elongate branches with respective first and second inside faces facing each other, respective outside faces and respective first and second lateral edges, the first and second branches being hinged together at their first ends about a hinge axis enabling the first and second branches to pivot between a close together position in which the first and second inside faces are generally parallel to each other and a spaced apart position in which the first and second inside faces are angularly offset from each other, the first and second branches being adapted to be separably fastened together at their second ends in the close together position in which the first and second branches can grip a lock of hair between their respective inside faces, wherein each of the first and second branches has curved teeth extending laterally from the first lateral edge and curving towards the other of the first and second branches, the curved teeth of each of the first and second branches being interdigitated with the curved teeth of another of the first and second branches so that in the close together position the curved teeth pass through said lock of hair.

### Claim 2 (depends on 1)

Hairclip according to claim 1 wherein said curved teeth extend tangentially from the corresponding first lateral edge.

### Claim 3 (depends on 1)

Hairclip according to claim 1 wherein said curved teeth have an arc shape longitudinal profile.

### Claim 4 (depends on 3)

Hairclip according to claim 3 wherein the arc shape of said curved teeth subtends in its respective plane an angle between about 45.degree. and 90.degree., advantageously about 60.degree..

### Claim 5 (depends on 1)

Hairclip according to claim 1 wherein at least one of the first and second branches has center teeth and end teeth, and wherein the center teeth are longer than the end teeth.

### Claim 6 (depends on 1)

Hairclip according to claim 1 wherein there is a separation between said curved teeth, and wherein the separation between said curved teeth allows said branches to pivot about a transverse hinge axis.

### Claim 7 (depends on 1)

Hairclip according to claim 1 wherein the respective second lateral edges are raised away from each other.

### Claim 8 (depends on 7)

Hairclip according to claim 7 wherein the respective second lateral edges are curved with a circular arc shape transverse profile.

### Claim 9 (depends on 7)

Hairclip according to claim 7 wherein the respective second lateral edges have a circular arc shape longitudinal profile.

### Claim 10 (depends on 1)

Hairclip according to claim 1 wherein said curved teeth have free end portions, and wherein the free end portions of said curved teeth are substantially coplanar.