Hair trimmer with cutting guide

Patent metadata

Field	Value
Publication number	US-10518428-B2
Application number	US-201815889486-A
Country	US
Kind code	B2
Filing date	Feb 6, 2018
Priority date	Aug 22, 2011
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A hair cutting device comprises a blade portion and an adjustable cutting guide moveable with respect to the blade portion to provide a reference guide line on a user's skin/body to enable hair to be cut accurately at a predetermined angle or pattern.

First claim

The invention claimed is:

1. A device for cutting hair comprising:
a body portion having a proximal end portion, an intermediate portion and a distal end portion,
the body portion including a handle;
a cutting blade assembly located at the proximal end portion: and an adjustable cutting guide located at the intermediate portion, comprising a first light source and a second light source:
wherein the second light source is positioned in front of the first light source, the second light source being disposed closer to the proximal end portion:
wherein the position of the first light source of the cutting guide can be adjusted to a chosen angle (0, a) relative to the cutting blade assembly to provide a reference line on skin of a user to enable hair to be cut at said chosen angle relative to the reference line.

2. The device according to claim 1 wherein the first light source is pivotally mounted on the body portion and arranged to project a first an adjustable light beam onto the skin of the user at said chosen angle (6, a) relative to the cutting blade assembly as said reference line.

3. The device according to claim 2 wherein the first light source is incrementally rotatable with a plurality of set stable positions at chosen angular positions, to enable exact replication of cutting angle/orientation between separate uses of the device so that the angle (a) of the adjustable light beam relative to the cutting blade assembly can be adjusted to the chosen angle.

4. The device according to claim 3 wherein the second light source projects a fixed reference light beam in a direction parallel to the cutting blade assembly such that the adjustable light beam and the fixed reference light beam intersect at a single point to define a cross-hair reference point for a hair cutting operation.

5. The device according to claim 4 , wherein the second light source is a laser light source.

6. The device according to claim 4 , wherein the second light source of the cutting guide is formed integrally with the device.

7. The device according to claim 4 , wherein the second light source of the cutting guide is detachable from the device.

8. The device according to claim 4 wherein the second light source is fixed relative to the cutting blade assembly.

9. The device according to claim 8 , wherein the second light source is configured to project the fixed reference light beam onto the skin of the user beyond a cutting line where hair is cut by the cutting blade assembly.

10. The device according to claim 8 wherein the second light source is configured to project the fixed reference light beam onto the skin of the user at a cutting line where hair is cut by the cutting blade assembly.

11. The device according to claim 10 wherein said stable positions are provided symmetrically about a central zero set stable position at which the adjustable reference light beam lies parallel to the fixed reference beam.

12. The device according to claim 1 , wherein the first light source is a laser light source.

13. The device according to claim 1 , wherein the first light source of the cutting guide is formed integrally with the device.

14. The device according to claim 1 , wherein the first light source of the cutting guide is detachable from the device.

15. The device according to claim 1 , wherein the first light source of the cutting guide projects a beam comprising a reference shape including one or more angled surfaces.

16. The device according to claim 15 , wherein the reference shape comprises a circle and the one or more angled surfaces comprise a sector of the circle, such that one line of the sector can be aligned with a reference feature on a face or a body of the user.

Assignees

• Koninklijke Philips Nv

Inventors

• Halmut Ishay
• Nijdam Jeroen Christian

Classifications

• B26B19/20

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

• B26B19/46 Primary

  providing for illuminating the area to be shaved or clipped · CPC title

• B26B19/382 Primary

  Built-in accessories · CPC title

• B26B19/06 Primary

  involving co-operating cutting elements both of which have shearing teeth · CPC title

• B26B19/3813

  Attachments · CPC title