Braun Patente

An adaptor for being coupled to a drive shaft of an oral care device handle having an essentially cylindrical drive shaft coupling end and for being coupled to an oral care device attachment is provided, the adaptor comprising: a second separable coupling part configured for coupling with a first separable coupling part provided at a motion transmitter of the oral care device attachment; and a coupling unit having a top plate and one at least partly deformable essentially cylindrical wall element, or at least two elastic or deflectable wall elements, extending from the top plate, wherein the coupling unit defines an essentially cylindrical receiver receptacle for receiving and coupling with the essentially cylindrical drive shaft coupling end.

Provided is an etching method that includes providing a metallic substrate (100) on which an etch-resistant material is arranged to mask the metallic substrate, through which etch-resistant material apertures (126) are defined. The etch-resistant material comprises a continuous region (128) that extends continuously between and surrounds the apertures. The etching method includes etching the metallic substrate, with the etching including delivering an etchant to the metallic substrate through the apertures so that discrete recessed regions in the metallic substrate are initially etched beneath the apertures. The etch-resistant material is resistant to the etchant. The etching is continued until at least some of the discrete recessed regions merge beneath the continuous region of the etch-resistant material so that the continuous region extends over a location of the metallic substrate located in-between the initially formed discrete recessed regions, at which location metallic material of the metallic substrate is removed when the discrete recessed regions merge to form one or more merged etched regions (130). The etching leaves behind a portion (132) of the metallic substrate, which portion of the metallic substrate still remains beneath the one or more merged etched regions. Also provided is a method of manufacturing a foil, comb or blade for an electric shaver, with the method comprising implementing the etching method. Further provided is an article obtainable by the etching method or the method of manufacturing the foil, comb or blade.

Provided is a hair-guiding element (10) for an electric shaver. The hair-guiding element has a skin-contacting surface (12) for contacting skin, and a cutting element-facing surface (14) for facing a cutting element (16), with the cutting element-facing surface facing in an opposite direction with respect to a direction faced by the skin-contacting surface. The hair-guiding element's periphery provides the hair-guiding element with a toothed profile comprising teeth (20) arranged along a main axis (MA) of the hair-guiding element, with the teeth each comprising part of the skin-contacting surface and part of the cutting element-facing surface. Further provided is a hair-cutting assembly (10, 16) comprising the hair-guiding element and the cutting element, and an electric shaver comprising such a hair-cutting assembly. Additionally provided is a method of manufacturing the hair-guiding element.

Provided is a hair-guiding element (10) for an electric shaver. The hair-guiding element has a skin-contacting surface (12) for contacting skin, and a cutting element-facing surface (14) for facing a cutting element (16), with the cutting element-facing surface facing in an opposite direction with respect to a direction faced by the skin-contacting surface. The hair-guiding element's periphery provides the hair-guiding element with a toothed profile comprising teeth (20) arranged along a main axis (MA) of the hair-guiding element, with the teeth each comprising part of the skin-contacting surface and part of the cutting element-facing surface. Slots (26, 26', 28, 28') separate neighboring teeth (20) from each other along the main axis (MA). The slots include pairs of slots (26, 28; 26', 28'). Each of the pairs of slots includes a longer slot (26; 26') and a shorter slot (28; 28'). Further provided is a hair-cutting assembly (10, 16) comprising the hair-guiding element and the cutting element, and an electric shaver comprising such a hair-cutting assembly. Additionally provided is a method of manufacturing the hair-guiding element.

A personal care attachment for a personal care handle, the personal care attachment having an outer housing, a head unit having a head arranged for being driven into motion relative to the outer housing, in particular into an oscillatory motion, and a driver having a first end being coupled with the head and a second end arranged for being coupled with a drive shaft of the personal care handle, and a magnetic force unit having at least one first magnetically interacting element provided in fixed relationship with the outer housing and at least one second magnetically interacting element provided in fixed relationship with either the head or the driver, wherein the magnetic force unit is arranged to provide a force that biases the second end of the driver away from the head so that the head is in a maximum deflection state, in particular wherein the personal care attachment comprises a stopper that defines the maximum deflection state.

The present disclosure is concerned with a method of making an insert for an injection molding machine comprising the steps of providing a metal block, removing material from the metal block by eroding and/or milling so that at least one depression is formed for at least partly defining a mold cavity for molding a first component of a two-component plastic part, the depression being defined by at least one bordering wall of the metal block, where between a base surface of the depression and at least a portion of the bordering wall a material transition area is present having a first radius, removing material from the material transition area by applying laser light so that the resulting material transition area has a second radius smaller than the first radius.

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motion converter (5A, 5B, 5C, 5D, 8C) structured for converting a rotational motion provided by a motor shaft (31A, 31B, 31D, 3) into a linear reciprocating motion of a drive shaft (70A, 70B, 70D). The motion converter (5A, 5B, 5C, 5D, 8C) has a deformable unit (50A, 50B, 50C, 50D, 8C), a mounting unit (60A, 60B, 60D) connected with the deformable unit (50A, 50B, 50C, 50D, 8C), a coupling unit (59A, 59B, 59C, 59D, 8A) connected with the deformable unit (50A, 50B, 50C, 50D, 8C), the coupling unit (59A, 59B, 59C, 59D, 8A) being structured to receive the drive shaft (70A, 70B, 70D) or the coupling unit (59A, 59B, 59C, 59D, 8A) comprising the drive shaft (70A, 70B, 70D), a connector unit (8A, 8B, 8C, 8D) connected with the deformable unit (50A, 50B, 50C, 50D, 8C), the connector unit (8A, 8B, 8C, 8D) comprising at least a first essentially U-shaped receiver (90E) being structured for receiving a first eccentric shaft element (41A, 41B, 41D) of the motor shaft (31A, 31B, 31D, 3) and having a U-base and two U-legs together defining a first elongated hole (804B, 805B, 814B, 902E) having a length (1), a width and a height, and a first bracing element (903E) that connects the two U-legs of the first essentially U-shaped receiver (90E) on their free ends such that access into the first elongated hole (804B, 805B, 814B, 902E) across the width and the height of the first elongated hole (804B, 805B, 814B, 902E) is provided, preferably where the first bracing element (903E) is bar-shaped or U-shaped or O-shaped, and where the length (1) is measured from an inner surface of the U-base to the free ends of the U-legs.

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The present invention relates to a personal care device, in particular hair removal device such as an electric shaver, comprising an elongated handle 2 for manually moving the personal care device along a body surface, a working head 1 attached to said handle for effecting a personal care treatment to said body surface, wherein an adjustment device 26 including at least one adjustment actuator 35 is provided for adjusting at least one treatment characteristic, wherein said adjustment actuator is configured and controlled to adjust said at least one treatment characteristic from a first setting to a second setting within a transition time period of not less than 0.1 seconds and not more than 1.5 seconds.

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In accordance with the present disclosure, a personal hygiene device has a resonant motor and a motor control unit for applying a periodic voltage signal with a driving frequency at the resonant motor for driving the resonant motor into an oscillating motion with an oscillating frequency equal to the driving frequency. The motor control unit comprises a synthesizer circuit for digitally synthesizing the periodic voltage signal from voltage pulses of variable length provided with a pulse frequency higher than the driving frequency such that at least two voltage pulses are applied at least in one of two half cycles of each period of the periodic voltage signal.

The present invention relates to a cutter system 3 for an electric shaver and/or trimmer 1, comprising a pair of cooperating cutter blades 4, 5 each having at least one row of comb-like cutting teeth 6, 7, wherein one of said cutter blades is stationary and the other one is movable relative to the stationary cutter blade along a cutting surface 8 defined between said cooperating cutter blades, said cutting teeth each having pairs of lateral cutting edges 9 tapering towards a tooth tip 11, wherein said tooth tips of at least one of the cooperating cutter blades are provided with a flattened, beveled tip surface 12 and wherein a skin contact surface 14 of the cutter system has an inclined forward end portion 14f for guiding the cutter blades in the region of said tooth tips over the skin of a user and defining an acute angle φ to said cutting surface, wherein said flattened, beveled tip surface is inclined to a virtual plane 27 at an acute angle, said virtual plane extending parallel to said cutting direction 25 and perpendicular to said skin contact surface and/or a tangential plane 33 tangential thereto, so the tooth tip touches said virtual plane only at the cutting surface with a substantially wedge-shaped void 29 between the flattened beveled tip surface and said virtual plane.

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