With Can Support Patents (Class 30/436)
  • Patent number: 4839964
    Abstract: In a clothes shaver or an electric shaver having an outer blade including mesh, inner blades which are energized to the direction of the outer blade in a state of standing by a blade force up spring, and a fan which is fit to a rotary shaft of an inner blade supporting base and is possible to rotate with the inner blade supporting base, when fixing the fan of the blade force up spring is pressed to the bottom face of the inner blade supporting base by an end face of the fan which faces to the bottom face of the inner blade supporting base to fix on the bottom face thereof in one action.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: June 20, 1989
    Assignee: Izumi Seimitsu Kogyo Kabushiki Kaisha
    Inventors: Hiromi Uchiyama, Tsuyoshi Nakano
  • Patent number: 4837929
    Abstract: A dry shaver has a readily replaceable head frame supporting an outer shearing foil. The head frame is of a generally rectangular configuration with a pair of opposed end walls between which an inner cutter assembly projects from a shaver housing for shearing engagement with the undersurface of the shearing foil. Each of the end wall is integrally formed with a hook for locked engagement with a corresponding stop on the part of the housing to retain the head frame on the top of the housing. Also formed integrally on each of the end walls is a release lever which is capable of resiliently flexing in a direction of disengaging the adjacent hook form the stop, permitting the removal of the head frame.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: June 13, 1989
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masao Tanahashi, Shiro Yada
  • Patent number: 4827613
    Abstract: A shaving apparatus comprising a housing, a cutting plate and a cutting member which can be driven so as to be rotatable with respect to the cutting plate, said cutting member comprising a holder with cutting elements, said cutting elements comprising cutting sides at the radial ends. The holder comprises a bearing member in which the cutting elements are journalled so as to be rotatable as well as the positioning member for the cutting elements, the bearing member and the positioning member being rotatable with respect to each other and being coupled together by means of a resilient element.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: May 9, 1989
    Assignee: U.S. Philips Corp.
    Inventor: Eppe Bakker
  • Patent number: 4811484
    Abstract: 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.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: March 14, 1989
    Assignee: U.S. Philips Corp.
    Inventors: Willem S. Wijma, Eduard W. Tietjens, Eppe Bakker, Albert Hoekstra
  • Patent number: 4811483
    Abstract: 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.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: March 14, 1989
    Assignee: U.S. Philips Corp.
    Inventors: Eppe Bakker, Eduard W. Tietjens
  • Patent number: 4807359
    Abstract: A dry-shaving apparatus comprising a housing supporting a cutter for rotation is provided in which the cutting elements of a rotatable cutter follow a constrained path defined by the shear plate and, when the elements are clear of the shear plate, follow a free path in the form of a first circular arc as part of a revolution during rotation of the cutter.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: February 28, 1989
    Assignee: U.S. Philips Corp.
    Inventor: Willem S. Wijma
  • Patent number: 4802281
    Abstract: 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.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: February 7, 1989
    Assignee: U.S. Philips Corp.
    Inventor: Eduard W. Tietjens
  • Patent number: 4733466
    Abstract: A cutting unit for a rotary razor is provided which has a rotatable element for shearing hairs and a brush rotatable with the shearing element. The brush acts to position hairs for shaving and is particularly useful for alleviating pseudofolliculitis barbae and for positioning ingrown hairs for shaving.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: March 29, 1988
    Inventor: Cortez Fletcher, Jr.
  • Patent number: 4729169
    Abstract: In an inner rotary cutter for an electric shaver fomed by providing a rotary disk at its circumference with a plurality of blade sections at prescribed intervals, a cup-shaped base section is provided which is formed by extending a cylinder section from a circular section in the axial direction to a prescrived length, the base section on its circumference is provided, in one body, with vertically extended sections projecting in the axial direction, each vertically extended section at its tip is provided, in one body, with a horizontally extended section projecting approximately in the radial direction, and the front edge of the horizontally extended section in the direction of rotation is formed into a blade. A ceramic blade may be glued on the end face of the horizontally extended section.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: March 8, 1988
    Assignee: Izumi Seimitsu Kogyo Kabushiki Kaisha
    Inventor: Katsuya Asawa
  • Patent number: 4719698
    Abstract: An electric shaver comprising a shaver housing comprising a generally rectangular box-like casing and a head casing removably mounted on one end of the box-like casing; a finely perforated stationary shear foil replaceably mounted on the head casing; a reciprocable blade assembly positioned inside the head casing and outside the box-like casing and cooperable with the stationary shear foil to cut bristles entering the head casing through the perforations in the stationary shear foil; an electric drive motor accommodated within the box-like casing and having a drive shaft, said drive shaft having first and second ends opposite to each other and protruding outwards from the motor in opposite directions away from each other; means for connecting the first end of the drive shaft with the blade assembly to permit the blade assembly to undergo oscillation relative to the stationary shear foil; a photoelectric detector comprising a light emitting element and a photoelectric cell for providing an electric output sign
    Type: Grant
    Filed: July 2, 1986
    Date of Patent: January 19, 1988
    Assignee: Kyushu Hitachi Maxell, Ltd.
    Inventors: Kazunori Ninomiya, Katuaki Shitama, Masashi Aoi
  • Patent number: 4711028
    Abstract: A dry-shaving apparatus comprises a holder for a circular cutting unit which includes an external cutting member formed with hair-entry apertures, having an outwardly extending annular flange portion, and movable transversely relative to the holder, and an internal cutting member rotatably drivable relative to the external cutting member. A retaining plate is positioned inside the holder. The external cutting member is detachably secured to the retaining plate, the internal cutting member being retained between the external cutting member and the retaining plate, by means of two resilient arms engaging around the flange portion of the external cutting member and secured to the retaining plate. A spring associated with the retaining plate moves the same transversely relative to the holder.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: December 8, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Wijtse Bergsma, Klaas T. Oord
  • Patent number: 4707915
    Abstract: A dry-shaving apparatus comprises a housing having a holder for a shear plate with hair-entry apertures and a cutter which is rotatable about an axis of rotation and which comprises a carrier for cutting elements which are movable relative to the carrier, in which during rotation of the cutter, as part of a revolution, each point of a cutting edge at the end of a cutting element follows a constrained path which is defined by the shear plate and each point of a cutting edge follows a circular free path when the ends are clear of the shear plate. At the more advanced axial end of the first cutting element, viewed in the direction of rotation, the radius of a circular free path of the cutting edge is smaller than the distance from the axis of rotation to the corresponding portion of the shear plate at the location where at this end the free path changes into the constrained path, so that the cutter comes gradually into contact with the shear plate.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: November 24, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Eppe Bakker, Albert Hoekstra
  • Patent number: 4707923
    Abstract: 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.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: November 24, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Eduard W. Tietjens
  • Patent number: 4698908
    Abstract: A shaving apparatus comprises a housing having a top surface, and a holder together with a retaining element provided with three triangularly arranged cutting units. Provision is made for engaging the retaining element with the holder with the cutting units therebetween to form a unitary body detachable from the top surface of the housing. Three stepped recesses are arranged 120.degree. apart in the peripheral wall of the retaining element, each recess having two steps. Three stops are arranged 120.degree. apart on the top surface of the housing. The holder body can be mounted on the housing in three positions, the stops on the housing engaging one of the two steps in the retaining element recesses in each of two of such positions and engaging the peripheral wall of the retaining element in the remaining position, the axial distance between the retaining element and the holder thereby being varied.
    Type: Grant
    Filed: March 5, 1986
    Date of Patent: October 13, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Wijtse Bergsma, Hans Labrijn, Olivier Sterk
  • Patent number: 4688329
    Abstract: A shaving apparatus comprises a housing and a shaving head rotatably mounted on the housing and having at least two rotary shaving units each comprising an external shaving member provided with hair-entry apertures and an internal shaving member rotatably drivable relative to the external shaving member, the axes of the rotatably drivable internal shaving members being parallel to each other. The shaving head is mounted such that it is rotatable relative to the housing about a rotational axis inclined relative to the longitudinal dimension of the housing and parallel to the axes of the rotatably drivable internal shaving members. Thereby the shaving head can be rotated about the rotational axis to various positions oriented differently relative to the housing.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: August 25, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Klaas T. Oord
  • Patent number: 4675998
    Abstract: A dry-shaving apparatus includes a shaving unit comprising an external shaving member provided with hair-entry apertures; and an internal shaving member associated with and rotatable relative to the external shaving member, the internal shaving member being formed with a plurality of cutting blades for engagement with the external shaving member. A first resilient element engages the internal shaving member and exerts pressure thereagainst. A ball bearing member is centrally positioned between the external shaving member and the internal shaving member and engages the internal shaving member. A second resilient element is associated with the external shaving member and engages the ball bearing member.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: June 30, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Carel J. Thijsse
  • Patent number: 4663842
    Abstract: A shaving apparatus comprises a housing; an external shaving member formed with hair-entry apertures and engaging the housing; and an internal shaving member associated with the external shaving member and rotatable relative thereto. A drive shaft couples the internal shaving member to a motor, the drive shaft having a hub. A pin engages the hub for rotatably supporting the drive shaft. Two separate radially acting cylindrical bearing surfaces of different diameters are provided on the pin. Two separate cylindrical radially acting bearing surfaces of correspondingly different diameters are provided on the hub for cooperation with the respective separate radially acting cylindrical bearing surfaces provided on the pin. A supporting plate is provided within the shaving apparatus housing, the pin and the supporting plate being formed as a one-piece plastic unit.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: May 12, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Sieds Bosch
  • Patent number: 4649643
    Abstract: An apparatus such as a dry shaver comprises a housing formed by two opposing housing sections accommodating an electric motor therewithin. A first outwardly extending mounting rim and a second outwardly extending mounting rim are provided on the electric motor, the second mounting rim being spaced from the first mounting rim. The first and second mounting rims engage the two housing sections and axially retain a part of each housing section therebetween. An axially directed edge portion is provided along the periphery of the first mounting rim and engages the two housing sections to radially retain the same therebetween.
    Type: Grant
    Filed: August 20, 1985
    Date of Patent: March 17, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Sieds Bosch
  • Patent number: 4635360
    Abstract: A cutter head for an electric shaver comprises an outer shearing foil provided with a series of hair entrance slots arranged in a row. Cooperating with the outer shearing foil is an inner cutter assembly which includes at least one inner blade having a cutting edge elongated in a general direction of the length of each slot and is driven to move in relation to the shearing foil so that the cutting edge is in hair shearing relation with the row of the slots. Formed with the inner blade is a hair scooping projection which projects in a general direction of the movement of the cutting edge and define a sloping edge extending downwardly and outwardly from the cutting edge such that a long hair strands entering the slots can, as the inner blade advances, be slid or guide along the sloping edge up to the cutting edge where the strand is successfully sheared against the edge of the slot.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: January 13, 1987
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masao Tanahashi, Tetsuo Hamashima, Humihiro Kumano
  • Patent number: 4620576
    Abstract: An apparatus for piercing a container and draining fluid therefrom wherein a vertically movable container holder is provided with an inclined receiving portion having front and rear surfaces with the front surface being elevated with respect to the rear surface. The rear surface includes an opening for receiving a stationary piercing member having a piercing fluid receiving and fluid discharge end. The piercing end is beveled and includes a leading and a trailing edge. The rear surface of the vertically removable container holder includes an opening for receiving the piercing fluid receiving end of the stationary piercing member. The vertically movable container holder opening includes a positioning means adjacent thereto for positioning the bottom of the container with relation to the stationary piercing member. The vertically movable container holder further includes a piercing member guide tube connected at the opening and depending from the rear surface thereof.
    Type: Grant
    Filed: December 11, 1984
    Date of Patent: November 4, 1986
    Assignee: David R. Owen
    Inventor: Lorenzo H. Owen, Jr.
  • Patent number: 4606122
    Abstract: Device for locking and unlocking a cutting head frame on the housing of a dry shaver, with up ramps and down ramps provided on the cutting head frame as guide means for locking elements located in the housing.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: August 19, 1986
    Assignee: Braun Aktiengesellschaft
    Inventors: Roland Ullmann, Kurt Beutel, Hans-Eberhard Heintke
  • Patent number: 4604800
    Abstract: A sealing construction is disclosed herein for a casing preferably for an electric shaver which is formed by first and second casing members which are to be pressed together through an annular sealing element to provide a seal between the sealing surfaces of the first and second casing members. The first casing member is formed in its sealing surface with an annular groove for retaining the annular sealing element in position, such sealing element being made of elastic material and having an axially projecting and rounded top portion above the sealing surface of the first casing member. Also projected on the second casing member is an annular plug of convex-shaped in cross section which aligns with said annular sealing element so as to be engageable with the rounded top portion thereof.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: August 12, 1986
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tadashi Yamamoto, Mitsuo Ichiya, Keizo Yamaguchi
  • Patent number: 4594778
    Abstract: A shaving unit for a dry-shaving apparatus comprises an external first cutting member with an annular wall portion formed with hair-entry apertures, and a second internal cutting member which is cooperable with the first cutting member and which comprises a ring of cutters which second cutting member can be driven relative to the first cutting member with an oscillatory rotational movement. The first and second cutting members are interconnected by at least two resilient elements, each of which extends substantially radially of the rotational axis of the second cutting member and has an end connected to the first cutting member and an end connected to the second cutting member. The elastic properties of the resilient elements are such as to permit the oscillatory rotational movement of the second cutting member, but the resilient elements are rigid in directions extending substantially parallel to and radially of the rotational axis of the second cutting member.
    Type: Grant
    Filed: March 19, 1985
    Date of Patent: June 17, 1986
    Assignee: U.S. Philips Corporation
    Inventors: Marinus J. J. Dona, Adrianus J. J. Franken, Freddy Haes, Cornelis M. Reynhout
  • Patent number: 4531287
    Abstract: An automatically operating electric shaver comprising a housing provided with a shaving head, said housing comprising a power source part and a motor. Furthermore there is provided a starting preliminary circuit which operates by detecting external contact resistance, a proximity detecting circuit which operates by detecting changes in capacity between electrodes for detecting proximity and a motor drive circuit which operates only when both of the afore-mentioned circuits operate and that the construction is such that the shaver starts automatically in a prescribed position and stops automatically in any positions remote from the said position.
    Type: Grant
    Filed: May 11, 1984
    Date of Patent: July 30, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Minoru Shibata, Koichi Hayashi, Katsumi Abe
  • Patent number: 4475285
    Abstract: An electric shaver has a housing which contains a motor. An inner blade support is mounted for rotation on the motor at one end of the housing, and an outer blade on the housing covers the inner blade support. Inner blades on the inner blade support revolve and are urged by springs against the outer blade, whereby hair extending through holes in the outer blade is cut by the inner blade. Openings through the inner blade support permit cut hair to drop therethrough, and the hair collects in a receptacle below the openings. Air flow caused by revolving the inner blade and other members on the inner blade support blows through the openings then near the receptacle to move hair from between the inner blade and the outer blade to the receptacle. The air flow then continues out of the housing through exhaust openings in the periphery of the outer blade.
    Type: Grant
    Filed: November 10, 1981
    Date of Patent: October 9, 1984
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Hikoyoshi Hara, Hirozo Imai, Youji Iguchi
  • Patent number: 4442597
    Abstract: There is provided a shaving apparatus comprising a housing, a shaving head, and a resilient one-piece hinge element connecting the shaving head to the housing. The hinge element has a hinge pin portion and a connecting portion. The shaving head is formed to engage the hinge pin portion and retain the same under tension. The housing wall is provided with a slot to receive the connecting portion and to retain the same in place under elastic tension.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: April 17, 1984
    Assignee: U.S. Philips Corporation
    Inventors: Wijtse Bergsma, Eelke S. Venema
  • Patent number: 4413410
    Abstract: A rotary type electric shaver, having an inner cutter and a shaving head mounted thereover; the inner cutter including a rotatable base having receiving slits radially about its axis of rotation; the inner cutter also including a cutter blade inserted in each receiving slit, each cutter blade having a cutting edge and a leg portion, the leg portion terminating in a distal edge having at least one receiving notch and a receiving hole, the receiving hole being located closer to the axis of rotation of rotatable base than that receiving notch; the inner cutter also including a spring assembly for each receiving slit, each spring assembly having at least two spring portions, one end of each spring portion being fixed to the lower surface of the rotatable base, the other end of one of the spring portions engaging the receiving hole and exerting a downward force thereon, the end of the other spring portion engaging the receiving notch and exerting an upward force thereon; the shaving head including a thin, perforat
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: November 8, 1983
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Kiyotaka Otsuka, Masao Tanahashi
  • Patent number: 4393586
    Abstract: Shaving blade assembly for rotary type electric shaver, improved specifically in raising and shearing abilities for such irregular beard hair as curly, bent or lying hair.
    Type: Grant
    Filed: July 29, 1980
    Date of Patent: July 19, 1983
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tetsuo Hamashima, Fumihiro Kumano
  • Patent number: 4370807
    Abstract: A water-powered, rotary head shaver is provided which includes a housing having a hollow shaving head portion defining an interior chamber and having at least one opening and at least one water outlet port formed therein and a hollow handle defining an interior channel which communicates with the chamber of the shaving head portion and which has a water inlet port formed therein. A rotary head grill is mounted within the opening of the shaving head portion and a drive shaft is rotatably mounted within the chamber of the shaving head portion. An impeller having a plurality of vanes is mounted on the shaft and a rotary cutting head is coupled to the shaft for rotation therewith and is disposed adjacent to the shaving head grill plate for cooperative shearing engagement therewith upon rotation.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: February 1, 1983
    Inventor: Charles R. O'Neill
  • Patent number: 4347662
    Abstract: 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.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: September 7, 1982
    Assignee: U.S. Philips Corporation
    Inventor: Eduard W. Tietjens
  • Patent number: 4343086
    Abstract: There is provided a shaving apparatus having a shear plate formed with hair entry apertures and a cutting unit rotatable relative to the shear plate. The cutting unit comprises a cutting member having a central body provided with cutters, a hair-pulling member having a central portion, hair-pulling elements respectively associated with and movable relative to the cutters, respective connecting arms extending from the hair-pulling elements to the central portion of the hair-pulling member, and an annular cover plate positioned over the inner ends of the connecting arms and engaging the central portion. The central body and the central portion each have a central opening, through both of which means formed on the cover plate extends for engaging the cutting member to secure the hair-pulling member between the cutting member and the cover plate.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: August 10, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Jochem J. de Vries, Ferdinand M. Trees
  • Patent number: 4336650
    Abstract: There is provided a shaving apparatus having a circular shear plate and a cutting unit rotatable relative to the shear plate. The cutting unit comprises a cutting member having cutters extending toward the shear plate and a lead-cutting element having lead cutters extending toward the shear plate and respectively associated with and movable relative to the cutters away from and toward the shear plate. Each lead cutter, with reference to the direction of rotation of the cutting unit, is positioned in front of its associated cutter. A spacer is interposed between each cutter and its associated lead cutter.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: June 29, 1982
    Assignee: U.S. Philips Corporation
    Inventor: Willem K. Gorter
  • Patent number: 4329781
    Abstract: Disclosed is a shaving apparatus having a shear plate provided with hair-entry apertures and a cutting member drivable relative to the shear plate. The cutting member is formed with cutters each having an associated lead cutter slidingly engaging the guide wall of its respective cutter. The end of each lead cutter has a projection terminating in a cutting edge for penetration into a hair, the thickness of such projection permitting only partial penetration of the lead cutter into the hair. Such penetration is advantageously further limited by forming the front wall of the lead cutter perpendicular to the end wall of its associated cutter.
    Type: Grant
    Filed: November 29, 1979
    Date of Patent: May 18, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Hugo Schemmann, Gerhard Diefenbach
  • Patent number: 4318223
    Abstract: A shaving apparatus comprises a housing and a shaving head provided with at least one shaving unit having a stationary cutting member and a cooperating cutting member drivable by means of a motor and a coupling spindle. At a location near the rim of each stationary cutting member the housing is provided with an axially adjustable pin, one end of which engages such rim. The stationary cutting member is engaged and supported by a resilient element at another location near its rim, the stationary cutting member being pivotable about the axially adjustable pin against the action of the resilient element. The other end of each axially adjustable pin engages an inclined contact face of a flexible endless band. By means of an actuating arm and an actuating knob on the housing wall, this flexible endless band is movable in a direction substantially transverse of the axial direction of each pin.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: March 9, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Wijtse Bergsma, Pieter Riemersma
  • Patent number: 4283849
    Abstract: 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.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: August 18, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Manfred Engelhardt, Jan Reinink, Jochem J. de Vries, Eduard W. Tietjens
  • Patent number: 4281453
    Abstract: The disclosure relates to a shaving apparatus having a shear plate with hair entry apertures and a drivable cutting unit with at least one cutting element provided with a cutting edge. Owing to the presence of the shear plate a shaving apparatus of this type does not allow the hairs to be shaved as closely to the skin as a shaving apparatus without such a shear plate, where the cutting element is in direct contact with the skin. In order to eliminate this drawback a construction is proposed in which the cutting element is provided with a hair pulling element which leads in the direction of the driving and which is immobile relative to the cutting element.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: August 4, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Eppe Bakker, Ebbe Boiten, Eildert Kingma, Gerard J. Lenting, Willem S. Wijma
  • Patent number: 4275496
    Abstract: A semiautomatic rotary razor which comprises a rectangular box-shaped framework, an annular cap detachably secured to one surface of the framework and having a reticulate outer blade, a rotary shaft extending across the framework with one end protruding out of the one surface of the framework, an inner blade assembly detachably mounted at the protruding end of the rotary shaft, a fly wheel and a driven gear mounted on the rotary shaft within the framework, a partition wall extending within the framework along the length thereof, a stub shaft extending within the framework adjacent and in parallel to the rotary shaft and slidably received in the framework and partition wall, a driven gear and a transmission gear mounted on the stub shaft and a slidable rack bar having rack teeth thereon for engaging the driven gear on the stub shaft.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: June 30, 1981
    Inventor: Bonpei Gotoh
  • Patent number: 4275497
    Abstract: 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.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: June 30, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Manfred Engelhardt, Jan Reinink, Jochem J. De Vries, Ferdinand M. Trees, Eduard W. Tietjens, Gerrit J. Groothuis
  • Patent number: 4272884
    Abstract: 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.
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: June 16, 1981
    Assignee: U.S. Philips Corporation
    Inventor: Eduard W. Tietjens
  • Patent number: 4262416
    Abstract: A shaving apparatus includes a cutting member substantially constituted by a central body provided at its circumference with cutters connected to the central body by means of connecting arms. For reasons of manufacturing technology and cost the material thickness is desirable minimized. However, limiting factors in this respect are the strength and the rigidity of the cutting member. In the instant construction the strength and the rigidity of the cutting member are increased by having the connecting arms secured to a bent reinforcement rim at the periphery of the central body.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: April 21, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Dirk J. Van Hemmen, Jan Reinink, Jochem J. de Vries
  • Patent number: 4259781
    Abstract: A shaving apparatus has a circular shear plate provided with hair-entry apertures and a cutting unit associated with and rotatable relative to the shear plate. The cutting unit comprises a cutting member having a circular central body provided with circumferentially arranged cutters and lead cutters respectively associated with and movable relative to the cutters. Each lead cutter is secured to the central body of the cutting member by a resilient connecting arm, the inner end portion of which extends substantially radially with respect to the cutting unit axis and undergoes torsion-loading by reason of the movement of the lead cutter away from the shear plate, the lead cutter being connected eccentrically to such inner end portion. The torsion-loading is elastically opposed in each instance.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: April 7, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Ebbe Boiten, Gerrit J. Groothuis, Jochem J. de Vries
  • Patent number: 4258470
    Abstract: A shaving apparatus has a circular shear plate provided with hair-entrance apertures and a cutting unit associated with and rotatable relative to the shear plate. The cutting unit comprises a cutting member having a circular central body and a hair-pulling member having a circular central portion. Cutters extend from the central body circumference toward the shear plate, with each cutter having a guide wall. A lead cutter is associated with and movable along the guide wall of each cutter, the lead cutter being connected to the central portion circumference by a V-shaped elastically deformable arm. One link of the connecting arm is secured to the central portion and extends tangentially therefrom; and the other limb is connected to the lead cutter. Each connecting arm is elastically deformed so as to urge its lead cutter against the guide wall of the associated cutter.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: March 31, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Ebbe Boiten, Jochem J. de Vries
  • Patent number: 4257161
    Abstract: A dry-shaving apparatus comprising a circular shear plate; a circular cutting member associated with and rotatable relative to the shear plate; mechanism to effect rotation of the cutting member; and a rotatable spindle tiltably coupled at one end to said cutting member and tiltably coupled at the other end to said rotating mechanism, each such tiltable coupling including a three-point contact equi-spaced about the axis of rotation of the rotatable spindle between said rotatable spindle and the cutting member on the one hand and between said rotatable spindle and the rotating mechanism on the other hand.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: March 24, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Hendrik A. C. Bijl, Wijtes Bergsma
  • Patent number: 4250617
    Abstract: There is provided a shaving apparatus having a holder for at least two and preferably three cutting units arranged in a triangular pattern therein. A raised portion extends over that area of the holder situated centrally with respect to the cutting units, such portion being raised with respect to the periphery of the holder. Desirably such raised portion of the holder gradually slopes downwardly towards the periphery of the holder. An adjustable skin-tautening device is mounted at the periphery of the holder.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: February 17, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Eppe Bakker, Pieter Riemersma
  • Patent number: 4240199
    Abstract: There is provided a shaving apparatus having a shear plate formed with hair-entrance apertures and a cutting unit associated with and rotatable relative to the shear plate. The cutting unit comprises a cutting member having cutters and a hair-pulling member having lead cutters respectively associated with and movable relative to the cutters. A separate coupling piece is provided for securing the cutting member and the hair-pulling member together by passage through corresponding central openings in each such member.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: December 23, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Ebbe Boiten, Eduard W. Tietjens, Jochem J. De Vries
  • Patent number: 4227301
    Abstract: There is provided a rotary shaving apparatus having a shear plate formed with hair-entrance apertures and a cutting member associated with and rotatable relative to the shear plate. The cutting member is substantially constituted by a central body provided with cutters extending only from its circumference. The cutters are arranged in a plurality of groups, the intervals between adjoining cutters of each group being equal, such intervals differing from the respective intervals between the two adjacent cutters of two different groups.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: October 14, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Dirk J. Van Hemmen, Albert Hoekstra
  • Patent number: 4223437
    Abstract: There is provided a shaving apparatus having a shear plate formed with hair-entrance apertures and a cutting unit associated with and drivable relative to the shear plate. The cutting unit comprises a cutting member having cutters and lead cutters respectively associated with and movable relative to the cutters. In order to obtain a correct positioning of each lead cutter relative to its associated cutter, an extension is provided on either the lead cutter or the cutter for engagement with the cutter or the lead cutter as the case may be.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: September 23, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Ebbe Boiten, Jochem J. De Vries
  • Patent number: 4222168
    Abstract: There is provided a shaving apparatus having a shear plate formed with hair-entrance apertures and a cutting unit associated with and rotatable relative to the shear plate. The cutting unit comprises a cutting member having cutters and a hair-pulling member having lead cutters respectively associated with and movable relative to the cutters. A separate coupling piece is provided for securing the cutting member and the hair-pulling member together by passage through corresponding central openings in each such member. One or more connection tabs extend radially inwardly from the periphery of the central opening in the hair-pulling member for contact with the coupling piece.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: September 16, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Ebbe Boiten, Eduard W. Tietjens, Jochem J. de Vries, Tjamme de Vries
  • Patent number: 4192065
    Abstract: A shaving apparatus comprising a cutting member driven relative to a shear plate, spring means to press the cutting member against the shear plate, a pair of outwardly bent opposed tabs provided on the cutting member, and a disc member spaced from the cutting member and provided with means for location between and cooperation with the opposed tabs in order to couple the cutting member and the disc member.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: March 11, 1980
    Assignee: U.S. Philips Corporation
    Inventor: Eduard W. Tietjens
  • Patent number: 4168570
    Abstract: A shaving apparatus comprises a shaving cap provided with a flange extending outwardly within a housing; a cutting member rotatable relative to the shaving cap and spring-urged into engagement therewith, such shaving cap being inwardly depressable against the spring; two diametrically opposite stops provided in the housing adjacent the flange; and a third stop provided in the housing also adjacent the flange, whereby the cap can be pivoted about the diametrically opposite stops.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: September 25, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Eppe Bakker, Wytse Bergsma, Pieter Riemersma