U.S. Philips Corporation

Eduard W Tietjens

Jochem J De Vries

Gerrit J Groothuis

Ebbe Boiten

Eppe Bakker

Ferdinand M Trees

Jan Reinink

Manfred Engelhardt

Hendrik Poel

Willem S Wijma

Albert Hoekstra

Tjamme De Vries

Dirk A Buik

Atze De Haan

A cutting unit for a shaving apparatus, which cutting unit comprises a cutting head with hair entrance apertures and a drivable cutting member, the hair entrance apertures being separated by dams which extend substantially transversely to the direction of driving. The dams are constructed with a profile which is asymmetrical in cross-section and has a thickness which increases in the direction of driving.

Cutting unit for a shaving apparatus

A shaving apparatus having a housing with a holder for a flexible cutting plate and a cutting member which has rigid cutting elements and can be driven so as to be rotatable with respect to the cutting plate, the cutting elements comprising cutting sides at the radial ends. The cutting plate comprises individual supporting disks.

Shaving apparatus

A dry-shaving apparatus comprises an external shear member formed with hair-entry apertures and an associated internal shear member rotatably drivable relative to the external shear member. The internal shear member includes a carrier, a cutter provided with a cutting edge, and a resilient element acting between the carrier and the cutter. At least a part of the cutter is movable against the action of the resilient element in a direction substantially opposed to the direction of driving the internal shear member.

Dry-shaving apparatus

A dry-shaving apparatus comprises a housing; a longitudinally extending shear plate; a holder for the shear plate, the holder being removable from the housing; and a longitudinally extending cutter rotatable relative to the shear plate. The cutter includes a carrier having cutting elements movable in a substantially radial direction relative to the carrier. Each cutting element has a cutting edge at its radial end, such radial ends being in contact with the shear plate during only a part of a revolution of the cutter and being clear of other parts of the apparatus during another part of the cutter revolution. A guide wall provided on the housing adjoins the shear plate, the radial ends of the cutting elements also being in contact during a further part of the cutter revolution with such guide wall.

A dry-shaving apparatus comprises a longitudinally extending shear plate provided with hair-entry apertures; and an associated longitudinally extending cutter rotatable about an axis of rotation, such cutter including a spindle coaxially positioned with respect to the axis of rotation. The shear plate has a central portion shaped as a part of a cylindrical surface and formed with the hair-entry apertures, the central portion partly surrounding the cutter. Cutting elements movable relative to the cutter in a substantially radial direction are provided, each cutting element having a cutting edge at its radial end. More than two coaxial discs are axially spaced from each other and are formed with slots extending in a substantially radial direction, the coaxial discs being rigidly mounted on the spindle. Each cutting element has oppositely disposed axially projecting connecting portions for insertion of the cutting element into facing slots in two adjacent discs, the connecting portions being movable inside the slots in a substantially radial direction.

Dry-shaving apparatus with self adjusting blades

A dry-shaving apparatus comprises a housing supporting a holder for a longitudinally extending shear plate provided with hair-entry apertures; and an associated longitudinally extending cutter rotatable about an axis of rotation. The cutter includes a carrier having cutting elements movable relative to the carrier in substantially radial directions, each cutting element having a cutting edge at its radial end. The shear plate has a central portion shaped as a part of a circularly cylindrical surface and formed with the hair-entry apertures, such central portion partly surrounding the cutter. The cutting edges of the cutting elements of the cutter, as it rotates, follow a constrained path defined by the shear plate and a free path where the cutting edges are disengaged from the shear plate. The shear plate also has two peripheral portions respectively adjoining its central portion for securing the shear plate to the holder. The shear plate has a first shear-plate transition between one peripheral portion and its central portion, the cutting edge of each cutting element changing from the free path to the constrained path in the vicinity of the first shear-plate transition, and a second shear-plate transition between the other peripheral portion and its central portion, the cutting edge of each cutting element changing from the constrained path to the free path in the vicinity of the second shear-plate transition.

Dry shaving apparatus

A shaving apparatus comprises a first cutting member having a circular central body, and a second cutting member having a wall provided with hair-entry apertures, the first cutting member being associated with and rotatable relative to the second cutting member. A plurality of blades is provided for engagement with the second cutting member. A plurality of resilient blade arms respectively connects the blades to the central body, each blade arm lying in a plane inclined in the direction of rotation of the first cutting member. Each blade arm is in the form of a leaf spring and extends in its longitudinal direction radially from the central body and in its lateral direction substantially along a helix extending both in the axial direction towards the second cutting member and in the direction of rotation.

A hair-cutting device comprises a stationary cutter; and a drivable cutter reciprocatingly movable with respect to the stationary cutter, each cutter being provided with teeth extending substantially at right angles to the driving direction. Each tooth of the drivable cutter is formed at the free end of a flexible arm, the respective flexible arms being spaced from each other to provide a slot between each pair of adjacent flexible arms. A rigid pressure element is located adjacent to and within the range of elastic deflection of the free ends of the respective flexible arms. The opposite end of each flexible arm is connected to a common cutter beam, the respective flexible arms and the cutter beam being integrally formed in one piece from a flexible sheet material.

Hair-cutting device

There is provided a shaving apparatus comprising a shear plate with hair-entry apertures; and a cutting unit associated with and reciprocatory relative to the shear plate, the cutting unit including a frame. Cutters extend from the frame toward the shear plate, each cutter having a trapezoidal cross section and being in contact along its base with the shear plate. Two hair-pulling blades are respectively associated with and movable relative to the opposite sloping sides of each cutter, each hair-pulling blade normally being in contact with the shear plate. A pair of resilient elements respectively connects the opposite ends of each hair-pulling blade to the frame.

A shaving apparatus comprising a shear plate and an associated reciprocatory cutting member is provided with cutting elements each of which is constituted by a filamentary cutter positioned along the outer edge of a lamelliform support.

There is provided a shaving apparatus having a shear plate formed with hair-entry apertures and a cutting unit associated with and drivable relative to the shear plate. The cutting unit comprises a cutting element having cutters, a hair-pulling blade being associated with each cutter and positioned in front of the same in the direction of driving the cutting unit. To enable the shaving apparatus to be operated at a high speed, the hair-pulling blades are elastically coupled to the cutting element whereby each hair-pulling blade is movable, upon driving of the cutting unit, toward and into contact with its associated cutter upon contact of the hair-pulling blade with a hair. Each hair pulling blade is normally spaced from its associated cutter throughout their respective lengths.

There is provided a shaving apparatus including a holder formed with a planar surface having at least two circular apertures. A circular shear plate having hair-entrance apertures is positioned in each circular aperture, and a cutting unit is rotatably associated with each shear plate. A mat covering the planar surface has circular openings respectively corresponding to the circular apertures. The mat is formed from a strip material provided with bristles, which extend outwardly with respect to the planar surface and the outer ends of which are hook-shaped for straightening hairs prior to their engagement by the hair-entrance apertures.

The movable cutting unit of a dry-shaver comprises a plurality of cutters (23) and a corresponding plurality of hair-pulling blades (24) each arranged in front of one of the cutters for movement therewith relative to the shear plate or foil of the shaver, and each movable relative to the associated cutter for its hair-pulling action. Each hair-pulling blade is mounted for pivoting motion on its associated cutter.

Cutting unit for a dry-shaving apparatus

There is provided a shaving apparatus comprising a shear plate having hair entry apertures and a cutting unit associated with and drivable relative to the shear plate. The cutting unit comprises a cutting member having cutters extending toward the shear plate and respectively associated lead cutters movable relative to the cutters away from and toward the shear plate. The arrangement is such that each lead cutter is always maintained spaced from its associated cutter throughout their respective lengths regardless of their relative position.

A shaving apparatus comprises a cutting unit provided with at least one cutter having associated therewith a lead cutter movable relative to the cutter. The lead cutter is connected to the cutter by means of a connecting element formed of a material having rubber-elastic properties.

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Drachten, Netherlands

Eduard W Tietjens