Beard trimmer

Patent metadata

Field	Value
Publication number	US-10213930-B2
Application number	US-201715716446-A
Country	US
Kind code	B2
Filing date	Sep 26, 2017
Priority date	Sep 28, 2016
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A beard trimmer having a handle, a motor and a head portion. The head portion has a rotary cutting unit for trimming hair that is provided with a first outer cutter and a first inner cutter.

First claim

What is claimed is:

1. A beard trimmer having a handle, a motor and a head portion, wherein
the head portion comprises at least a rotary cutting unit for trimming hair that is provided with a first outer cutter and a first inner cutter,
the first outer cutter is provided with a cutter skin contact surface and a cutting side which is opposite to the skin contact surface,
the motor rotationally drives one or both of the first inner cutter and the first outer cutter in order to rotate relative to the other and suitable to cut hair between the first inner cutter and the first outer cutter wherein a comb unit is releasably attached to the rotary cutting unit,
the comb unit comprises comb teeth wherein each of the comb teeth has a tooth skin contact surface, the tooth skin contact surface being at an elevated level relative to the cutter skin contact surface so that the tooth skin contact surface is suitable to be brought in a skin contact and prevents the cutter skin contact surface to be brought in skin contact,
a height difference of the tooth skin contact surface relative to the cutting side of the outer cutter defines a comb hair trimming length, and
the comb teeth are more flexible when the comb unit is detached from the rotary cutting unit relative to the comb teeth being less flexible when the comb unit is attached to the rotary cutting unit, wherein the comb unit is coupled to the rotary cutter unit through a snap fit connection.

2. The beard trimmer of claim 1 , wherein the comb unit is adapted to allow an amount of flexing of the comb teeth in a comb teeth zone of less than about 0.6 mm.

3. The beard trimmer of claim 1 , wherein the comb unit is adapted to allow an amount of flexing of the comb teeth in a comb teeth zone of less than about 0.4 mm.

4. The beard trimmer of claim 1 , wherein the comb unit is adapted to allow an amount of flexing of the comb teeth in a comb teeth zone of less than about 0.3 mm.

5. The beard trimmer of claim 1 , wherein the comb unit is adapted to allow an amount of flexing of the comb teeth in a comb teeth zone which is located closest to a center of the outer cutter.

6. The beard trimmer of claim 1 , wherein the comb unit is provided with an inner surface which faces the cutter skin contact surface and which is opposite to the tooth skin contact surface and wherein a distance between the cutter skin contact surface and the inner surface is below 0.6 mm.

7. The beard trimmer of claim 1 , wherein the comb unit is provided with an inner surface which faces the cutter skin contact surface and which is opposite to the tooth skin contact surface and wherein a distance between the cutter skin contact surface and the inner surface is below 0.4 mm.

8. The beard trimmer of claim 1 , wherein the comb unit is provided with an inner surface which faces the cutter skin contact surface and which is opposite to the tooth skin contact surface and wherein a distance between the cutter skin contact surface and the inner surface is below 0.3 mm.

9. The beard trimmer according to claim 1 , wherein the comb unit comprises a circular wall, wherein the comb teeth are integrally connected with each other by the circular wall and wherein the circular wall is surrounding the sides of the rotary cutting unit.

10. The beard trimmer according to claim 1 , wherein the comb unit is releasably attached to the rotary cutting unit and/or the head portion is releasably attached to the handle.

11. The beard trimmer according to claim 1 , wherein the first inner cutter and/or the first outer cutter are driven by the motor to rotate in a rotary direction relative to each other and wherein the comb teeth of the comb unit are circularly arranged.

12. The beard trimmer according to claim 1 , wherein the comb unit is made of a thermoplastic material and more preferably the comb unit is made from Polyoxymethylene.

13. The beard trimmer according to claim 1 , wherein the comb unit is made of a material having an Elastic Modulus ranging between about 1850 MPa and about 3850 MPa.

14. The beard trimmer according to claim 1 , wherein the comb unit is made of a material having an Elastic Modulus ranging between about 2350 MPa and about 3350 MPa.

Assignees

• Braun Gmbh

Inventors

• Bady Udo
• Sikora Bernhard
• Stegmann Wolfgang
• Wetzel Matthias
• Behrendt Juergen

Classifications

• B26B19/046

  Cutters being movable in the cutting head · CPC title

• B26B19/205

  by adjustment of the cutting members · CPC title

• B26B19/042

  Long hair cutters or older types comprising a cutting grid · CPC title

• B26B19/386

  Means for attaching the head thereto · CPC title

• B26B19/20

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