A motion transmission unit for a drive train of a hair cutting appliance includes an input shaft, an eccentric portion, a motion converter, and a tilting lever that engages a driving portion of a blade set. The motion converter is arranged between the input shaft and the tilting lever. The eccentric portion engages a motion converter input interface. A motion converter output interface engages the tilting lever input interface and includes a cylindrical portion defining a cylinder axis parallel to a swivel axis of the tilting lever. A tilting lever output interface includes a head portion defining a cylinder axis parallel to a swivel axis of the tilting lever. The cylinder axis of the head portion and the cylinder axis of the cylindrical portion are parallel to the swivel axis.

The present invention relates to a cutter system for an electric shaver and/or trimmer, including a pair of cooperating cutting elements movably supported relative to each other by a support structure, where one of the cutting elements is sandwiched between the other cutting element and the support structure, where the support structure includes at least one spacer defining a gap in which the sandwiched cutting element is movably received, the spacer and thus said gap having a thickness larger than the thickness of the sandwiched cutting element by an amount smaller than 40 μm.

The present invention relates to a cutter system for an electric shaver and/or trimmer, comprising a pair of comb-like cutting elements each with at least one row of cutting teeth and movable relative to each other, wherein one of said cutting elements has thickened and/or rounded tooth tips overhanging the tooth tips of the other cutting element wherein said cutting elements each include two rows of cooperating cutting teeth which are different from each other in terms of shape and/or size and/or position of said overhanging tooth tips.

A cutting unit having a blade carrier carrying a cutting blade, and a guard. The guard includes a blade-facing surface engaging the cutting blade at a cut location, a planar guard contact surface for contacting the user's skin, where the guard contact surface is angled with respect to the blade-facing surface, and a guard extender separate from the guard. The guard extender includes a planar extension contact surface cooperating with the guard contact surface to provide an extended contact zone across the guard and the guard extender for contacting a user's skin. The blade-facing surface and the guard contact surface converge towards a tip of the guard, such that a cutting direction extends along the guard contact surface towards the tip. The extended contact zone may provide for improved stability and reliable orientation of the cutting unit for cutting while limiting material use.

A hair clipper is provided, including a chassis having upper and lower chassis portions defining an enclosed interior chamber, said upper and lower chassis portions configured for being secured together; and an outer housing including upper and lower housing portions constructed and arranged for enclosing the chassis as the housing portions are secured together such that the interior chamber is isolated from the housing.

In accordance with objects of the invention, a blade adapter operable for attaching a blade assembly to an electric trimmer is provided. The blade adapter includes a base. A first plurality of holes is defined by the base and is operable to receive screws screwed into the electric trimmer. A second plurality of holes is defined by the base and is operable to receive and secure trimmer screws screwed through a static cutting blade of a blade assembly into the base. A channel is defined by the base and is operable to receive a cam adapter. A cam adapter has a drive connector opposite a blade engagement member. The drive connector is operable to engage a drive member of a motor of an electric trimmer. The blade engagement member is operable to engage and reciprocate a dynamic cutting blade of a blade assembly.

An electric-powered trimmer includes a cutting assembly having a stationary blade. A moveable blade is positioned on the stationary blade such that a cutting gap is defined between the moveable blade and the stationary blade. The moveable blade is configured to move along a first axis and a second axis extending orthogonal to the first axis. An adjustment mechanism is operable to move the moveable blade along the second axis relative to the stationary blade to selectively change the size of the cutting gap.

The present invention relates to a hair cutting appliance (10) comprising a blade set (20), and to a blade set (20) of a hair cutting appliance (10). The blade set (20) is arranged to be moved through hair in an assumed moving direction (28) to cut hair. The blade set (20) comprises a stationary blade (22), a movable blade (24), and a lateral protecting element (56). The stationary blade (22) comprises at least one toothed cutting edge (32, 34), a lateral end (30), and a first surface (48) that is arranged, when in use for shaving purposes, as a skin-contacting surface. The movable blade (24) comprises a toothed cutting edge (32, 34). The stationary blade (22) and the movable blade (24) are arranged to be reciprocally moved with respect to each other in a cutting direction (Y) that is basically perpendicular to the assumed moving direction (28). The lateral protecting element (56) is associated with the lateral end (30), thereby defining a lateral end cap of the stationary blade (22), wherein the lateral protecting element (56) laterally shields a lateral edge (40) of the lateral end (30), such that, when in use, skin contact of the lateral edge (40) is prevented. The lateral protecting element (56) and the lateral end (30) cooperate so as to prevent hairs from being trapped therebetween. The stationary blade (22) and the movable blade (24) are at least partially made from steel, and the lateral protecting element (56) is made from plastic material. The blade set (20) configured to pivot or swivel with respect to a housing of the hair cutting appliance (10).

Embodiments of present disclosure relates to a shaving assembly and a hair cutting appliance comprising the shaving assembly. The shaving assembly comprises: a supporting arm extending in a first direction; a cutting element comprising at least one moving tooth arranged along the first direction; a guard foil extending in the first direction and surrounding the cutting element, the guard foil comprising: a contact surface and a bent part, wherein an angle between the contact surface and the supporting arm is an acute angle, and at least one guard tooth slot is formed across the contact surface and the supporting arm, wherein the shaving assembly further comprises: a blocking member extending between the moving tooth and the supporting arm in a second direction that is substantially perpendicular to the contact surface, wherein the blocking member is adapted to facilitate hair being released from the guard tooth slot when the guard tooth slot is moved against the hair.

A hair clipper includes a clipper body comprising a motor and a blade assembly connected to the clipper body such that the motor moves a moveable blade of the blade assembly during operation. The blade assembly includes a blade housing having a guide surface that faces skin of a patient during operation and a patterned array of ribs that are located on the guide surface defining a guide plane. The ribs of the patterned array of ribs are arranged spaced-apart from one another and are sized to provide a kinetic friction force against dry skin of the patient of less than 1 N using a normal force of 3.5 N.