A rotary electric shaver includes a gear case arranged inside a head unit, a lower gear arranged in a lower portion of the gear case, coaxially having an outer blade gear for driving an outer blade and an inner blade gear for driving an inner blade, an upper gear arranged in an upper portion of the gear case to drive the outer blade, and a transmission gear having an input gear arranged in the lower portion of the gear case and to which driving power is input from the lower gear, and an output gear arranged in the upper portion of the gear case to drive the upper gear, in which the input gear and the output gear are coaxial and a rotary shaft vertically penetrates the gear case. The driving power from the upper gear drives an outer blade drive gear for driving the outer blade.

The invention relates to a shaving device for skin hairs. The device comprises a skin-contacting surface structure (14, 15), a cutter (6) for cutting hairs in a hair-cutting area (16), a shape-changing smart material (7), and a controller for controlling activation of the shape-changing smart material during use of the shaving device. The shape-changing smart material is configured, arranged and effective to adapt the relative position and/or relative orientation between at least part of the skin-contacting surface structure (14) and at least part of the hair-cutting area (16).

A rotary electric shaver includes an outer cutter which has an upper surface with annular shaving faces, in which many hair-entry apertures are formed, and an inner cutter having small blades, which rotate in sliding contact with the lower surface of the outer cutter from below the shaving faces. The outer cutter (10) has a plurality of concentric annular shaving faces (16, 18), which are integrally formed therewith. The density of the hair-entry apertures (65) is varied in the circumferential direction of the plurality of annular shaving faces (16, 18). The rotary electric shaver increases the shaving area of the outer cutter to improve shaving efficiency and also restrains excessively close shaving thereby to protect skin even when the contact pressure of an area near the center of the outer cutter against skin increases.

A cutting mechanism for a hair cutting apparatus, such as a shaving apparatus, includes an outer cutting member having hair-entry openings and an inner cutting member having cutting elements each having a first cutting edge. The inner cutting member is moveable with respect to the outer cutting member so as to perform a cutting operation within a cutting region of the cutting mechanism. Adjacent hair-entry openings are separated by a dividing element having a cutting section that lies within the cutting region and a non-cutting section that is outside the cutting region. The non-cutting section includes an inner wall facing the inner cutting member and a side wall which is substantially perpendicular to the inner wall. A single chamfer is provided between the inner wall of the non-cutting region and the side wall of the non-cutting region.

The invention relates to a shaver, comprising a handle, at least two rotary shaving heads, driven by at least one drive shaft which protrudes from said handle, and a support structure for supporting said shaving heads onto the handle so as to have their joined shaving surface (S) extend substantially perpendicular to said at least one drive shaft. The support structure is configured such, that a space (A), restricted at one side by the shaving heads and at the opposite side by the handle, is substantially open to its remaining, surrounding side.

A shaving unit for a shaving apparatus including a cutting unit, a main input spindle coupled to each cutting unit to drive an internal cutting member, and a system for adjusting operational parameters of the shaving unit. The adjustment system includes an adjustment input drive member drivable by the spindle, a unidirectional coupling member for coupling the spindle and the adjustment input drive member, when rotating in a first direction, such that the adjustment input drive member is driven by the spindle. A decoupled condition of the spindle and the adjustment input drive member is also provided when the spindle rotates in a second direction, such that the spindle is prevented from driving the member.

An outer blade for a hair cutting device, the outer blade being mounted to an end of a main body of the hair cutting device, includes bars that each have a shape of a rectangular stick and are arranged at predetermined intervals. The outer blade also includes, at a skin-surface-contact-side first face of each of the bars, an agent holding part configured to hold an agent that is a substance having a predetermined effect on a skin surface, the agent holding part being a surrounded recess heading from the skin-surface-contact-side first face of the bar toward an inner-blade-side second face of the bar. Thus, the agent such as foam or gel can be held by the agent holding part at the skin-surface-side face of the outer blade, and friction can be reduced between the outer blade and the skin surface by the agent held by the agent holding part.

Provided is a method of producing an outer blade for a hair cutting device from a material including bars that each have a shape of a rectangular stick and are arranged at predetermined intervals. The material is placed on a base. Next, a first tool having a leading end that has a gradually increasing width in a direction away from the material is used to press at least one part of each of the bars in a direction from a counter base-side first face of each of the bars toward a base-side second face of each of the bars. An edge of the first face of each of the bars is caused to project widthwise and to move toward the second face to be farther from an intermediate part of the first face.

A shaving apparatus provided with at least one cutting unit including external and internal cutting members drivable relative to each other. The internal cutting member includes at least one cutting element with a cutting edge movable along a cutting path while being driven in a driving direction. The external cutting member includes at least one hair-entry aperture bounded by at least first and second wall portions of the external cutting member, at least the first wall portion having a cutting edge for cooperation with the internal cutting member cutting edge. An edge portion of the second wall portion facing a plane along the cutting path, in a cross section taken substantially perpendicularly to the plane along the cutting path, touches a virtual circle in at least two contact points on the virtual circle.

The present invention relates to a beard trimmer having one or more rotary heads (1), said rotary cutting heads having a moving blade (2) and a fixed blade (3), each head being surrounded by a crown-shaped comb (4), said comb being adjustable in height in order to adjust, in use, the distance between said blades and the skin, and thereby to adapt the cutting of the beard to the desired length, characterized in that the trimmer comprises a fixed bade having a shape characterized by: a tooth length L3 of 1 to 3 mm, preferably 1.5 to 2 mm; an opening angle between the teeth of 20 to 30?, preferably 22 to 28?, and more preferably 24 and 27?; a tooth width L2, at the end of the teeth, of 0.3 to 1 mm, preferably 0.4 to 0.9 mm.