Patents by Inventor Bernhard Kraus

Bernhard Kraus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10974399
    Abstract: Electrical hair removal device and method for determining the time behavior of a cyclic motor process during use of the electrical hair removal device with a motor-driven hair cutting unit by measuring the motor current. Parallel to measuring the motor current, the induced voltage of the motor is measured and a timing property of the induced voltage is evaluated, wherein the duration of a time pattern in the induced voltage is analyzed as timing property of the induced voltage. A cutting activity of the electrical hair removal device during use is determined based on the evaluated timing property of the induced voltage, and a force applied onto skin during use of the electrical hair removal device is determined based on the measured motor current and, optionally, on the determined cutting activity.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: April 13, 2021
    Assignee: Braun GMBH
    Inventors: Christian Neyer, Bernhard Kraus
  • Patent number: 10913171
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a first spring device and adapted to magnetically interact with each other, and a second spring device for movably linking the drive unit to a structural element of the appliance. The first spring device is made from plastics such as long-chained PPS, whereas the second spring device is made from steel.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: February 9, 2021
    Assignee: Braun GMBH
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Patent number: 10864644
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a spring device and adapted to magnetically interact with each other. The spring device includes at least one leaf spring having a constricted section in a central region of the leaf spring, wherein surfaces of the at least one leaf spring neighboring the constricted section are shaped convex. Such convex surfaces may have a parabolic contour.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: December 15, 2020
    Assignee: Braun GMBH
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Patent number: 10849402
    Abstract: The present invention is concerned with an epilator for removing body hair. The epilator comprises a body having a head section, a plucking cylinder which is rotatable about a first rotation axis in the head section for plucking hairs and at least one shaving blade for shaving off hairs, which is mounted in the head section movable with respect to the plucking cylinder. The at least one shaving blade is movable between a retracted position in which the at least one shaving blade does not protrude from the head section and an extended position in which the at least one shaving blade protrudes from the head section.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: December 1, 2020
    Assignee: Braun GmbH
    Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus
  • Patent number: 10792825
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a spring device and adapted to magnetically interact with each other. Said spring device includes a ring element made in one piece from plastic including at least one pair of leaf springs and a pair of cross-bars extending crosswise to said leaf springs and connecting said leaf springs to each other.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: October 6, 2020
    Assignee: Braun GMBH
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Patent number: 10779626
    Abstract: A skin treatment apparatus, preferably an epilator, comprising at least one detector for detecting approximation and/or contact with the skin and a control unit to actuate the device depending on the signal received from the detector. The control unit has at least one regulator which increases the speed of the drive unit upon detection of an increased resistance and/or current consumption by a sensor and/or decreases the speed of the drive unit upon detection of an decreased resistance and/or current consumption by a sensor.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: September 22, 2020
    Assignee: Braun GMBH
    Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus, Torsten Klemm
  • Publication number: 20190015998
    Abstract: Electrical hair removal device and method for determining the time behavior of a cyclic motor process during use of the electrical hair removal device with a motor-driven hair cutting unit by measuring the motor current. Parallel to measuring the motor current, the induced voltage of the motor is measured and a timing property of the induced voltage is evaluated, wherein the duration of a time pattern in the induced voltage is analyzed as timing property of the induced voltage. A cutting activity of the electrical hair removal device during use is determined based on the evaluated timing property of the induced voltage, and a force applied onto skin during use of the electrical hair removal device is determined based on the measured motor current and, optionally, on the determined cutting activity.
    Type: Application
    Filed: July 10, 2018
    Publication date: January 17, 2019
    Inventors: Christian Neyer, Bernhard Kraus
  • Publication number: 20180368549
    Abstract: The present invention is concerned with an epilator for removing body hair. The epilator comprises a body having a head section, a plucking cylinder which is rotatable about a first rotation axis in the head section for plucking hairs and at least one shaving blade for shaving off hairs, which is mounted in the head section movable with respect to the plucking cylinder. The at least one shaving blade is movable between a retracted position in which the at least one shaving blade does not protrude from the head section and an extended position in which the at least one shaving blade protrudes from the head section.
    Type: Application
    Filed: June 13, 2018
    Publication date: December 27, 2018
    Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus
  • Publication number: 20180319028
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a drive unit having first and second drive components adapted to magnetically interact with each other, and a magnetic shielding at least partially surrounding the drive unit. Said magnetic shielding is formed by structural parts supporting the drive unit and/or transmitting drive movements of the drive unit, wherein such structural parts are made of a soft magnetic material. More particularly, a mounting frame and a transmitter frame together form a magnetic shielding cage which is movable as the mounting frame and the transmitter frame are movable relative to each other.
    Type: Application
    Filed: April 11, 2018
    Publication date: November 8, 2018
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Publication number: 20180311841
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a spring device and adapted to magnetically interact with each other. Said spring device includes at least one leaf spring having a constricted section in a central region of the leaf spring, wherein surfaces of said at least one leaf spring neighboring said constricted section are shaped convex. Such convex surfaces may have a parabolic contour.
    Type: Application
    Filed: April 11, 2018
    Publication date: November 1, 2018
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Publication number: 20180311843
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a spring device and adapted to magnetically interact with each other. Said spring device includes a ring element made in one piece from plastic including at least one pair of leaf springs and a pair of cross-bars extending crosswise to said leaf springs and connecting said leaf springs to each other.
    Type: Application
    Filed: April 11, 2018
    Publication date: November 1, 2018
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Publication number: 20180311842
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a first spring device and adapted to magnetically interact with each other, and a second spring device for movably linking the drive unit to a structural element of the appliance. The first spring device is made from plastics such as long-chained PPS, whereas the second spring device is made from steel.
    Type: Application
    Filed: April 11, 2018
    Publication date: November 1, 2018
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Patent number: 10111509
    Abstract: An epilator having a body and a plucking cylinder which is rotatable about a rotation axis for plucking hair. The plucking cylinder is movable with respect to the body between an extended position and a retracted position. Further, the epilator has elastically deformable elements biasing the plucking cylinder and at least two rollers mounted on the same side of the body as the plucking cylinder with the plucking cylinder interposed between the rollers. When pressing the rollers and the plucking cylinder to a flat surface the force exerted by the rollers exceeds the force exerted by the plucking cylinder.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 30, 2018
    Assignee: Braun GMBH
    Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus
  • Patent number: 10035273
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other and adapted to magnetically interact with each other, wherein a drive support is provided for supporting the drive unit onto a mounting structure. The drive support supporting the drive unit onto a mounting structure of the installation environment is adapted to provide for at least one axis of rotation for at least one of the drive components of the drive unit allowing said at least one drive component to rotate relative to the mounting structure.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 31, 2018
    Assignee: Braun GMBH
    Inventors: Martin Ring, Bernhard Kraus, Robert Schaefer
  • Patent number: 9993930
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other and adapted to magnetically interact with each other, wherein a drive support is provided for supporting the drive unit onto a mounting structure. The drive support supporting the drive unit onto a mounting structure of the installation environment is adapted to provide for at least one axis of rotation for the drive unit allowing said drive unit to rotate relative to the mounting structure, said axis of rotation being spaced apart from the drive unit to provide for a transmission ratio increasing or decreasing the oscillation amplitude of the functional element driven by the drive unit vis-à-vis the oscillation amplitude of the drive unit.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: June 12, 2018
    Assignee: Braun GmbH
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Publication number: 20180145576
    Abstract: Vibration motor for an electric hand-held appliance provided with a first drive element, a second drive element and at least one spring element coupling the first drive element to the second drive element. In order to achieve many different forms of vibration, the at least one spring element is arranged such that the second drive element can oscillate in a first direction with a first resonance frequency and can oscillate in a second direction with a second resonance frequency. The first drive element is configured to generate a magnetic field that forces the second drive element in a drive direction, wherein the drive direction is not perpendicular to the first and second directions. The invention further relates to an electric hand-held appliance with such a vibration motor.
    Type: Application
    Filed: November 20, 2017
    Publication date: May 24, 2018
    Inventor: Bernhard Kraus
  • Patent number: 9888757
    Abstract: An attachment for an epilator or an epilator having at least a clamping unit for clamping and plucking hairs that is arranged for driven movement relative to a housing along a hair capture direction is disclosed. The clamping unit has a moveable clamping element having a clamping surface and a hair guiding surface and a fixed clamping element having a clamping surface and a hair guiding surfaced. The moveable clamping element and the fixed clamping element are arranged to be cyclically moveable between an open position in which the two clamping surfaces have a minimal distance such that a gap for receiving hairs is formed between them and a closed position in which the two clamping surfaces abut on each other. The two hair guiding surfaces form a funnel in front of the gap in the open position with respect to the hair capture direction.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: February 13, 2018
    Assignee: Braun GmbH
    Inventors: Frieder Grieshaber, Tarik Mehaddene, Bernhard Kraus, Luis Burrell-Diez, Andreas Lennartz, Tobias Schwarz, Markus Halm
  • Publication number: 20170172278
    Abstract: An epilator having a body and a plucking cylinder which is rotatable about a rotation axis for plucking hair. The plucking cylinder is movable with respect to the body between an extended position and a retracted position. Further, the epilator has elastically deformable elements biasing the plucking cylinder and at least two rollers mounted on the same side of the body as the plucking cylinder with the plucking cylinder interposed between the rollers. When pressing the rollers and the plucking cylinder to a flat surface the force exerted by the rollers exceeds the force exerted by the plucking cylinder.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 22, 2017
    Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus
  • Publication number: 20170172277
    Abstract: A skin treatment apparatus, preferably an epilator, comprising at least one detector for detecting approximation and/or contact with the skin and a control unit to actuate the device depending on the signal received from the detector. The control unit has at least one regulator which increases the speed of the drive unit upon detection of an increased resistance and/or current consumption by a sensor and/or decreases the speed of the drive unit upon detection of an decreased resistance and/or current consumption by a sensor.
    Type: Application
    Filed: December 5, 2016
    Publication date: June 22, 2017
    Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus, Torsten Klemm
  • Publication number: 20160176059
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other and adapted to magnetically interact with each other, wherein a drive support is provided for supporting the drive unit onto a mounting structure. The drive support supporting the drive unit onto a mounting structure of the installation environment is adapted to provide for at least one axis of rotation for at least one of the drive components of the drive unit allowing said at least one drive component to rotate relative to the mounting structure.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 23, 2016
    Inventors: Martin Ring, Bernhard Kraus, Robert Schaefer