IP Library Granted Patent US 7,536,790
Granted Patent B2
US 7,536,790 · App. 10/523,048 · Granted May 26, 2009

Hair clippers

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Quick Facts
Patent No.
US 7,536,790
App. No.
10/523,048
Granted
May 26, 2009
Kind
B2
Abstract

A hair cutting machine ( 10 ) having a handle ( 12 ) that contains an electromotive drive unit ( 49 ) and having a cutter head ( 16 ) that is disposed at the front handle end and, in the operating position of the handle ( 12 ), has a stationary blade ( 18 ) and an oscillating blade ( 20 ) disposed above it, the stationary and oscillating blades ( 18, 20 ) forming a cutting plane ( 22 ) that lies between the two blades ( 18, 20 ) and is inclined in relation to the longitudinal axis ( 24 ) of the handle ( 12 ). In the operating position of the handle ( 12 ), the cutting plane ( 22 ) is inclined downward in relation to the longitudinal axis ( 24 ) of the handle ( 12 ) and the oscillating blade ( 20 ) is disposed above the stationary blade ( 18 ), which makes it possible to produce a haircut that is comparable to a classic scissors cut (FIG. 9 ).

Claims (14)

1. A haircutting machine, comprising:

a handle ( 12 ) with a front handle end;

an electric drive unit ( 54 ) contained in the handle ( 12 ); and

a cutter head ( 16 ) arranged at said front handle end;

wherein said cutter head ( 16 ) comprises a stationary blade ( 18 ) and an oscillating blade ( 20 ) disposed above the stationary blade ( 19 ) in an operating position of the handle ( 12 ) so that the stationary blade ( 18 ) and the oscillating blade ( 20 ) define a cutting plane ( 22 ) that extends there between and the cutting plane ( 22 ) is inclined in relation to a longitudinal axis ( 24 ) of the handle ( 12 );

wherein the cutting plane ( 22 ) encloses a positive inclination angle (α) of 0 to 90° to the longitudinal axis ( 24 ) of the handle and the oscillating blade ( 20 ) is adjustable in relation to the stationary blade ( 18 ) in a longitudinal direction ( 55 ) of the cutting plane ( 22 );

wherein the stationary blade ( 18 ) is arranged between the oscillating blade ( 20 ) and the handle ( 12 ); and

wherein the electric drive unit ( 54 ) contained in the handle ( 12 ) is connected to the oscillating blade ( 20 ) through an opening ( 44 ) provided in the stationary blade ( 18 ) in order to drive the oscillating blade.

2. The hair cutting machine as recited in claim 1 , wherein said positive inclination angle (α) is from 0 to 45°.

3. The hair cutting machine as recited in claim 1 , wherein said positive inclination angle (α) is from 5 to 35°.

4. The hair cutting machine as recited in claim 1 , wherein said positive inclination angle (α) is approximately 30°.

5. The hair cutting machine as recited in claim 1 , further comprising an interchangeable cutter head ( 16 ) comprising the stationary blade ( 18 ) and the oscillating blade ( 20 ).

6. The hair cutting machine as recited in claim 1 , wherein the cutter head ( 16 ) comprises a flat covering ( 56 ) that covers part of the oscillating blade ( 20 ) in order to prevent cut hair strands from collecting on the oscillating blade.

7. The hair cutting machine as recited in claim 1 , wherein the positive inclination angle is adjustable.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 19, 2016
From: WELLA GMBH
To: HFC PRESTIGE INTERNATIONAL HOLDING SWITZERLAND S.A.R.L
Reel/Frame 040420/0478 →
CHANGE OF NAME Recorded Nov 16, 2011
From: WELLA AG
To: WELLA GMBH
Reel/Frame 027240/0338 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 2, 2005
From: EBENHOCH, SIEGFRIED
To: WELLA AKTIENGESELLSCHAFT
Reel/Frame 017375/0717 →