Patents by Inventor Bernhard Krau?
Bernhard Krau? 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).
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Patent number: 11167436Abstract: 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: GrantFiled: April 11, 2018Date of Patent: November 9, 2021Assignee: Braun GMBHInventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Patent number: 10974399Abstract: 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: GrantFiled: July 10, 2018Date of Patent: April 13, 2021Assignee: Braun GMBHInventors: Christian Neyer, Bernhard Kraus
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Patent number: 10913171Abstract: 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: GrantFiled: April 11, 2018Date of Patent: February 9, 2021Assignee: Braun GMBHInventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Patent number: 10864644Abstract: 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: GrantFiled: April 11, 2018Date of Patent: December 15, 2020Assignee: Braun GMBHInventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Patent number: 10849402Abstract: 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: GrantFiled: June 13, 2018Date of Patent: December 1, 2020Assignee: Braun GmbHInventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus
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Patent number: 10792825Abstract: 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: GrantFiled: April 11, 2018Date of Patent: October 6, 2020Assignee: Braun GMBHInventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Patent number: 10779626Abstract: 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: GrantFiled: December 5, 2016Date of Patent: September 22, 2020Assignee: Braun GMBHInventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus, Torsten Klemm
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Publication number: 20190015998Abstract: 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: ApplicationFiled: July 10, 2018Publication date: January 17, 2019Inventors: Christian Neyer, Bernhard Kraus
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Publication number: 20180368549Abstract: 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: ApplicationFiled: June 13, 2018Publication date: December 27, 2018Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus
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Publication number: 20180319028Abstract: 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: ApplicationFiled: April 11, 2018Publication date: November 8, 2018Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Publication number: 20180311841Abstract: 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: ApplicationFiled: April 11, 2018Publication date: November 1, 2018Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Publication number: 20180311842Abstract: 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: ApplicationFiled: April 11, 2018Publication date: November 1, 2018Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Publication number: 20180311843Abstract: 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: ApplicationFiled: April 11, 2018Publication date: November 1, 2018Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Patent number: 10111509Abstract: 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: GrantFiled: December 15, 2016Date of Patent: October 30, 2018Assignee: Braun GMBHInventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus
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Patent number: 10035273Abstract: 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: GrantFiled: December 16, 2015Date of Patent: July 31, 2018Assignee: Braun GMBHInventors: Martin Ring, Bernhard Kraus, Robert Schaefer
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Patent number: 9993930Abstract: 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: GrantFiled: December 16, 2015Date of Patent: June 12, 2018Assignee: Braun GmbHInventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
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Publication number: 20180145576Abstract: 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: ApplicationFiled: November 20, 2017Publication date: May 24, 2018Inventor: Bernhard Kraus
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Patent number: 9888757Abstract: 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: GrantFiled: October 11, 2013Date of Patent: February 13, 2018Assignee: Braun GmbHInventors: Frieder Grieshaber, Tarik Mehaddene, Bernhard Kraus, Luis Burrell-Diez, Andreas Lennartz, Tobias Schwarz, Markus Halm
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Publication number: 20170172278Abstract: 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: ApplicationFiled: December 15, 2016Publication date: June 22, 2017Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus
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Publication number: 20170172277Abstract: 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: ApplicationFiled: December 5, 2016Publication date: June 22, 2017Inventors: Tarik Mehaddene, Frieder Grieshaber, Bernhard Kraus, Torsten Klemm