Patents by Inventor Yvan Bourqui
Yvan Bourqui 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: 9356500Abstract: A stepper motor has a rotor having a permanent magnet, a stator housing and a plurality of stator coil assemblies disposed within the stator housing. Each coil assembly has a bobbin, a coil wound about the bobbin, and two pole plates having pole fingers extending axially inside of the bobbin. The bobbin is disposed between the two pole plates and defines a space accommodating the rotor. A number of magnetic detent plates are disposed about the permanent magnet rotor. Each magnetic detent plate has a central opening accommodating the rotor and a plurality of projections extending inwardly, spaced about the central opening. The projections interact with the magnetic field of the rotor magnet.Type: GrantFiled: April 23, 2013Date of Patent: May 31, 2016Assignee: JOHNSON ELECTRIC S.A.Inventors: Miha Furlan, Yvan Bourqui
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Patent number: 9194405Abstract: An electro-hydraulic actuator has a master cylinder, an electric motor and an electro-mechanical brake. The master cylinder has a hydraulic cylinder and an actuation piston slidably received within the hydraulic cylinder to vary pressure within a hydraulic circuit. The electric motor is adapted to drive the actuation piston into the hydraulic cylinder. The motor has a stator and a rotor. The electro-mechanical brake is arranged to selectively and releasably hold the rotor with respect to the stator to prevent relative rotational motion there between.Type: GrantFiled: December 26, 2012Date of Patent: November 24, 2015Assignee: JOHNSON ELECTRIC S.A.Inventors: Yvan Bourqui, Karin Krattinger
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Publication number: 20150326158Abstract: A controller is provided for driving a stepper motor with a magnetic rotor and at least one coil. The controller has a power stage for supplying the at least one coil with current, at least one analog Hall sensor for providing a signal as a function of the position of the magnetic rotor with respect to the Hall sensor, and a feedback line connecting the Hall sensor with the power stage to feed the signal of the Hall sensor back to the power stage.Type: ApplicationFiled: May 6, 2015Publication date: November 12, 2015Inventors: Miha Furlan, Yvan Bourqui, Maxime Bruelhart
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Patent number: 9168828Abstract: An actuator for a grille shutter assembly of a vehicle has a motor connected to an output via a gear train. The output has a connection for connecting to louvers of the grille shutter assembly. The gear train has a gear ratio which is variable depending on the actuation angle of the output shaft. Optionally, a return spring is arranged to resiliently return the output shaft to an initial actuation angle when the motor is not active.Type: GrantFiled: May 21, 2014Date of Patent: October 27, 2015Assignee: Johnson Electric S.A.Inventor: Yvan Bourqui
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Patent number: 9162562Abstract: An actuator for opening and closing grille shutters includes a drive unit, a wheel driven by the drive unit, and a pair of shafts attached to the wheel and configured for driving the grille shutters to open or close. At least one of the shafts is pivotally coupled to the wheel so that an angle formed between the shafts and the wheel is adjustable.Type: GrantFiled: March 18, 2014Date of Patent: October 20, 2015Assignee: Johnson Electric S.A.Inventors: Yvan Bourqui, Yan Chappex, Nick Grivas
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Publication number: 20140346380Abstract: An electrically operated valve assembly has a valve element moved by an actuator. The actuator has a motor connected to an output via a gear train. The output is connected to the valve element. The gear train has a gear ratio which is variable depending on the actuation angle of the output shaft. Optionally, a return spring is arranged to resiliently return the output shaft to an initial actuation angle when the motor is not active.Type: ApplicationFiled: May 21, 2014Publication date: November 27, 2014Applicant: Johnson Electric S.A.Inventor: Yvan BOURQUI
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Publication number: 20140345400Abstract: An actuator for a grille shutter assembly of a vehicle has a motor connected to an output via a gear train. The output has a connection for connecting to louvers of the grille shutter assembly. The gear train has a gear ratio which is variable depending on the actuation angle of the output shaft. Optionally, a return spring is arranged to resiliently return the output shaft to an initial actuation angle when the motor is not active.Type: ApplicationFiled: May 21, 2014Publication date: November 27, 2014Applicant: Johnson Electric S.A.Inventor: Yvan BOURQUI
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Publication number: 20140284123Abstract: An actuator for opening and closing grille shutters includes a drive unit, a wheel driven by the drive unit, and a pair of shafts attached to the wheel and configured for driving the grille shutters to open or close. At least one of the shafts is pivotally coupled to the wheel so that an angle formed between the shafts and the wheel is adjustable.Type: ApplicationFiled: March 18, 2014Publication date: September 25, 2014Applicant: Johnson Electric S.A.Inventors: Yvan Bourqui, Yan Chappex, Nick Grivas
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Publication number: 20140209781Abstract: An actuator (10) has a casing (12) and an output (16). An electric motor (20) is disposed in a compartment (18) of the casing (12). The output (16) is driven by the motor (20) through a gear train disposed within the casing (12). The gear train includes a worm (30) on a shaft (22) of the motor (20) and a worm wheel (32) meshed with the worm (30). A mounting clip (40) is arranged to resiliently press the motor (20) into the compartment 18). The mounting clip (40) has fingers (44) which engage axial ends of the motor (20) to support the motor (20) against axial movement and separation due to axial loading and/or external vibrations acting on the actuator (10).Type: ApplicationFiled: January 28, 2014Publication date: July 31, 2014Applicant: Johnson Electric S.A.Inventors: Rolf WEBER, Michael WATZEK, Bruno NEUHAUS, Yvan BOURQUI
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Publication number: 20140125190Abstract: A stator for an electric motor has a stator core, a winding and a housing enclosing the stator core and winding. The stator core has a yoke and a plurality of poles extending inwardly from the yoke. The winding formed by coils wound about the poles of the stator core. The housing grips the stator core and has at least one inwardly deformed portion that retains the stator core in the housing and prevents rotational movement of the stator core relative to the housing.Type: ApplicationFiled: January 9, 2014Publication date: May 8, 2014Applicant: SAIA-BURGESS MURTEN AGInventors: Yvan BOURQUI, Miha FURLAN, Michael WATZEK, David ZIMMERMANN
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Patent number: 8689427Abstract: A stator for an electric motor has a stator core, a winding and a housing enclosing the stator core and winding. The stator core has a yoke and a plurality of poles extending inwardly from the yoke. The winding formed by coils wound about the poles of the stator core. The housing grips the stator core and has at least one inwardly deformed portion that retains the stator core in the housing and prevents rotational movement of the stator core relative to the housing. A method of producing the stator is also disclosed.Type: GrantFiled: January 7, 2011Date of Patent: April 8, 2014Assignee: Johnson Electric S.A.Inventors: Yvan Bourqui, Miha Furlan, Michael Watzek, David Zimmermann
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Publication number: 20130278098Abstract: A linear actuator with a high holding force providing good irreversibility, has a high efficiency, low friction screw mechanism and a stepper motor with high magnetic detent torque but a low output torque ripple. The phase torque is modified to minimize the effect of the detent torque on the output. torque. Preferably, the motor has asymmetric phases to compensate for the detent torque.Type: ApplicationFiled: April 23, 2013Publication date: October 24, 2013Applicant: Johnson Electric S.A.Inventors: Yvan BOURQUI, Miha FURLAN
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Publication number: 20130278086Abstract: A stepper motor has a rotor having a permanent magnet, a stator housing and a plurality of stator coil assemblies disposed within the stator housing. Each coil assembly has a bobbin, a coil wound about the bobbin, and two pole plates having pole fingers extending axially inside of the bobbin. The bobbin is disposed between the two pole plates and defines a space accommodating the rotor. A number of magnetic detent plates are disposed about the permanent magnet rotor. Each magnetic detent plate has a central opening accommodating the rotor and a plurality of projections extending inwardly, spaced about the central opening. The projections interact with the magnetic field of the rotor magnet.Type: ApplicationFiled: April 23, 2013Publication date: October 24, 2013Applicant: Johnson Electric S.A.Inventors: Miha FURLAN, Yvan BOURQUI
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Publication number: 20110169367Abstract: A stator for an electric motor has a stator core, a winding and a housing enclosing the stator core and winding. The stator core has a yoke and a plurality of poles extending inwardly from the yoke. The winding formed by coils wound about the poles of the stator core. The housing grips the stator core and has at least one inwardly deformed portion that retains the stator core in the housing and prevents rotational movement of the stator core relative to the housing. A method of producing the stator is also disclosed.Type: ApplicationFiled: January 7, 2011Publication date: July 14, 2011Inventors: Yvan Bourqui, Miha Furlan, Michael Watzek, David Zimmermann
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Publication number: 20100066201Abstract: According to a first aspect the electric motor comprises the following components: a first stator member with n1 teeth, a second stator member with n2 teeth, and a third stator member with n3 teeth; a first connecting element that is in contact with the first and the third stator member, and a second connecting element that is in contact with the second and the third stator member. A tooth of the third stator member is arranged between a tooth of the first stator member and a tooth of the second stator member and n3 is greater than the sum of n1 and n2. According to a second aspect the stator of the electric motor comprises a first stack of sheet metal pieces that are joined to each other and a first stator plate. The stator plate is welded to the narrow sides of said sheet metal pieces.Type: ApplicationFiled: September 16, 2008Publication date: March 18, 2010Inventors: Andreas Engel, Yvan Bourqui, Rolf Weber, Michael Watzek