Comb arrangement, cutting head, and hair cutting appliance

Patent metadata

Field	Value
Publication number	US-10702999-B2
Application number	US-201816349678-A
Country	US
Kind code	B2
Filing date	Mar 23, 2018
Priority date	Mar 28, 2017
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A spacing comb arrangement for a hair cutting appliance includes a comb piece configured to be disposed at a skin-facing side of a stationary blade of a blade set. The comb piece has a plurality of comb teeth that define a cutting length of the blade set when the comb arrangement is mounted thereto. The comb piece further has a flexure section configured to urge a frontal portion of the comb piece against the skin-facing side of the stationary blade.

First claim

The invention claimed is:

1. A spacing comb arrangement for a hair cutting appliance, the comb arrangement comprising:
a comb piece that is arranged to be disposed at a skin-facing side of a stationary blade of a blade set, the comb piece comprising:
a frontal portion,
a plurality of comb teeth, formed at the frontal portion, that defines a cutting length of the blade set when the comb arrangement is mounted,
a rear portion arranged to be attached to the hair cutting appliance, and
a flexure section arranged between the frontal portion and the rear portion, the flexure section being arranged to urge the frontal portion against the skin-facing side of the stationary blade, when the appliance is operated,

wherein the flexure section defines a deflection axis between the frontal portion and the rear portion,
wherein the flexure section is integrated in the comb piece,
wherein a directional bias on the frontal portion is present when the comb piece is attached to the hair cutting appliance, and
wherein the comb piece is an integrally shaped comb piece being one piece including the frontal portion having the plurality of comb teeth, the rear portion attachable to the hair cutting appliance and the flexure section, and
wherein at the frontal portion of the comb piece at least one depression is provided, the depression extending parallel to a leading edge of the stationary blade and arranged to be engaged by frontal tips of stationary blade teeth of the stationary blade when the comb piece and the stationary blade are in a defined relative longitudinal position.

2. The comb arrangement as claimed in claim 1 , wherein the flexure section provides the comb piece with an increased deformability for the movement of the frontal portion.

3. The comb arrangement as claimed in 1 , wherein, when the comb piece is attached to the hair cutting appliance, the frontal portion and the rear portion are twisted or tilted away from one another about an axis defined by the flexure section to generate a respective counterforce that urges the frontal portion against and into contact with the stationary blade.

4. The comb arrangement as claimed in claim 1 , wherein at least one living hinge is formed between the frontal portion and a rear portion of the comb piece.

5. The comb arrangement as claimed in claim 1 , wherein the comb arrangement is adjustable, wherein the comb piece is movable with respect to the stationary blade between a retracted state and an extended state.

6. The comb arrangement as claimed in claim 1 , wherein an inherent warpage of the comb piece urges the frontal portion thereof towards the stationary blade.

7. The comb arrangement as claimed in claim 1 , wherein the comb piece is shaped in such a way that the frontal portion thereof is urged against the stationary blade when a rear portion thereof is mounted to the appliance.

8. The comb arrangement as claimed in claim 1 , wherein the frontal portion and the rear portion are harder material than a material of the flexure section.

9. The comb arrangement as claimed in claim 1 , wherein in the comb piece an indentation is formed that increases the flexibility of the comb piece, wherein the indentation forms a limit stop for a bending movement between the frontal portion and the rear portion of the comb piece.

10. The comb arrangement as claimed in claim 1 , wherein the at least one depression includes depressions that are parallel to one another, and wherein an arrangement of the depressions is adapted to respective length adjustment positions of the comb piece in relation to the stationary blade.

11. A cutting head for a hair cutting appliance, comprising a blade set including a movable blade and a stationary blade that are arranged to be moved with respect to one another to cut hair trapped therebetween, the cutting head comprising a comb arrangement, wherein the comb arrangement comprises:
a comb piece that is arranged to be disposed at a skin-facing side of the stationary blade of the blade set, the comb piece comprising:
a frontal portion,
a plurality of comb teeth, formed at the frontal portion, that defines a cutting length of the blade set when the comb arrangement is mounted,
a rear portion arranged to be attached to the hair cutting appliance, and
a flexure section arranged between the frontal portion and the rear portion, the flexure section being arranged to urge the frontal portion against the skin-facing side of the stationary blade, when the appliance is operated,

wherein the flexure section defines a deflection axis between the frontal portion and the rear portion,
wherein the flexure section is integrated in the comb piece,
wherein a directional bias on the frontal portion is present when the comb piece is attached to the hair cutting appliance,
wherein the comb piece is an integrally shaped comb piece being one piece including the frontal portion having the plurality of comb teeth, the rear portion attachable to the hair cutting appliance and the flexure section, and
wherein the frontal portion and the rear portion are harder material than a material of the flexure section.

12. The cutting head as claimed in claim 11 , wherein the stationary blade, at a skin-facing side thereof, comprises a basically planar rear portion and an inclined frontal portion, and wherein the frontal portion of the comb piece is urged against the frontal portion of the stationary blade.

13. The cutting head claim 11 , wherein the comb piece includes an indentation that increases flexibility of the comb piece, wherein the indentation forms a limit stop for a bending movement between the frontal portion and the rear portion of the comb piece.

14. The cutting head claim 11 , wherein the frontal portion of the comb piece includes at least one depression, the depression extending parallel to a leading edge of the stationary blade and configured to be engaged by frontal tips of stationary blade teeth of the stationary blade when the comb piece and the stationary blade are in a defined relative longitudinal position.

15. The cutting head claim 11 , wherein the frontal portion includes depressions that are parallel to one another, and wherein an arrangement of the depressions is adapted to respective length adjustment positions of the comb piece in relation to the stationary blade.

16. A hair cutting appliance, the appliance being arranged to be moved through hair to cut the hair and comprising a housing, a cutting head, and a comb arrangement configured to be attached to the cutting head, wherein the comb arrangement comprises:
a comb piece that is arranged to be disposed at a skin-facing side of a stationary blade of a blade set, the comb piece comprising:
a frontal portion,
a plurality of comb teeth, formed at the frontal portion, that defines a cutting length of the blade set when the comb arrangement is mounted,
a rear portion arranged to be attached to the hair cutting appliance, and
a flexure section arranged between the frontal portion and the rear portion, the flexure section being arranged to urge the frontal portion against the skin-facing side of the stationary blade, when the appliance is operated,

wherein the flexure section defines a deflection axis between the frontal portion and the rear portion,
wherein the flexure section is integrated in the comb piece,
wherein a directional bias on the frontal portion is present when the comb piece is attached to the hair cutting appliance,
wherein the comb piece is an integrally shaped comb piece being one piece including the frontal portion having the plurality of comb teeth, the rear

Assignees

• Koninklijke Philips Nv

Inventors

• Iaccarino Luca
• Smedinga Oege
• Hoexum Everhardus Johannes
• Maat Willem
• Phoon Kin Fatt

Classifications

• B26B19/38

  Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards (cutters, cutting heads B26B19/04, B26B19/12, B26B19/14; cleaning or disinfecting devices A45D27/46; drying devices A45D27/48; casings for electric apparatus in general H05K) · CPC title

• B26B19/04 Primary

  Cutting heads therefor; Cutters therefor; Securing equipment thereof · CPC title

• B26B19/3853

  Housing or handle · CPC title

• B26B19/20 Primary

  with provision for shearing hair of preselected or variable length · CPC title

• B26B19/063

  Movable or adjustable cutting head · CPC title