Patents by Inventor Lars Severinsson
Lars Severinsson 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: 8708123Abstract: One embodiment may include a system for distributing torque between front and rear axles of an all wheel drive vehicle and/or between left and right wheels of a two or four wheel drive vehicle comprises at least one limited slip coupling having a disc package and a piston acting thereon, the piston being actuated by a hydraulic pump assembly. This assembly has an electric motor, a hydraulic pump driven thereby, and a centrifugal regulator also driven thereby, the centrifugal regulator controlling a pressure overflow valve, connected to the oil outlet of the hydraulic pump. The assembly specifically comprises an axial piston pump having a piston drum rotatable in a pump housing and containing a number of reciprocable axial pistons, at least one centrifugal lever pivotally attached to the piston drum, and a valve member connected to the centrifugal lever and being arranged for cooperation with the mouth of an oil outlet bore in the piston drum to form the pressure overflow valve.Type: GrantFiled: October 5, 2010Date of Patent: April 29, 2014Assignee: BorgWarner TorqTransfer Systems ABInventors: Johan Nilsson, Daniel Herven, Peter Dahlstrom, Lars Severinsson
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Patent number: 8672790Abstract: A device for torque vectoring in a wheeled vehicle is presented. The device includes a differential mechanism arranged on an axle having a first drive shaft and a second drive shaft, an electrical power source connected to an electrical motor, the electrical motor being connectable to the axle for torque vectoring between the first drive shaft and the second drive shaft, and control means connected to the power source and configured to receive a plurality of variables representing the current vehicle state and to determine drive currents being dependent on the variables, wherein the drive currents are supplied to the electrical motor from the power source for introducing a torque increase to either one of the first or second drive shafts and a corresponding torque decrease to the other one of the first or second drive shafts.Type: GrantFiled: September 2, 2011Date of Patent: March 18, 2014Assignee: BorgWarner TorqTransfer Systems ABInventors: Lars Severinsson, Kristoffer Nilsson
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Publication number: 20130281250Abstract: A torque vectoring device (4-18) for two half-axles of a vehicle drive axle, provided with a conventional differential (20-27), through which drive torque is supplied from a propulsion motor, is connected on one hand to one of the half-axles (1), on the other hand to the cage (24) of the differential (20-27). An electric motor (15) of the torque vectoring device is connected via a differential transmission in the form of a planetary gearing (10) to said one of the half-axles (1) and the cage (24). The arrangement is such that the electric motor stands still, when the rotational speed of the half-axle (1) and the cage (24) is the same.Type: ApplicationFiled: December 14, 2011Publication date: October 24, 2013Applicant: BorgWarner TorqTransfer Systems ABInventors: Lars Severinsson, Kristoffer Nilsson
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Patent number: 8296022Abstract: A torque vectoring device directs different torques at will to the two wheels of a drive axle on a road vehicle. It has two hydraulically controlled disc clutches, connected to a drive shaft, extending through the device, and in engaged condition intended for connecting the drive shaft to either of two gear sleeves, each in splines engagement with an eccentric tube eccentrically journaled in relation to the drive shaft, and a torque transmitting mechanism with a gear ratio of 1:1 between the eccentric tube and a differential case sleeve, coaxial with the drive shaft and forming part of a differential case of a differential on the drive axle, to which differential the torque vectoring device is connected.Type: GrantFiled: October 14, 2010Date of Patent: October 23, 2012Assignee: BorgWarner TorqTransfer Systems ABInventors: Lars Severinsson, Ola Nicklasson
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Publication number: 20120244023Abstract: One embodiment may include a system for distributing torque between front and rear axles of an all wheel drive vehicle and/or between left and right wheels of a two or four wheel drive vehicle comprises at least one limited slip coupling having a disc package and a piston acting thereon, the piston being actuated by a hydraulic pump assembly. This assembly has an electric motor, a hydraulic pump driven thereby, and a centrifugal regulator also driven thereby, the centrifugal regulator controlling a pressure overflow valve, connected to the oil outlet of the hydraulic pump. The assembly specifically comprises an axial piston pump having a piston drum rotatable in a pump housing and containing a number of reciprocable axial pistons, at least one centrifugal lever pivotally attached to the piston drum, and a valve member connected to the centrifugal lever and being arranged for cooperation with the mouth of an oil outlet bore in the piston drum to form the pressure overflow valve.Type: ApplicationFiled: October 5, 2010Publication date: September 27, 2012Applicant: BorgWarner Torq Transfer Systems ABInventors: Johan Nilsson, Daniel Herven, Peter Dahlstrom, Lars Severinsson
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Publication number: 20120083378Abstract: A device for torque vectoring in a wheeled vehicle is presented. The device includes a differential mechanism arranged on an axle having a first drive shaft and a second drive shaft, an electrical power source connected to an electrical motor, the electrical motor being connectable to the axle for torque vectoring between the first drive shaft and the second drive shaft, and control means connected to the power source and configured to receive a plurality of variables representing the current vehicle state and to determine drive currents being dependent on the variables, wherein the drive currents are supplied to the electrical motor from the power source for introducing a torque increase to either one of the first or second drive shafts and a corresponding torque decrease to the other one of the first or second drive shafts.Type: ApplicationFiled: September 2, 2011Publication date: April 5, 2012Inventors: Lars Severinsson, Kristoffer Nilsson
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Publication number: 20110087409Abstract: A torque vectoring device directs different torques at will to the two wheels of a drive axle on a road vehicle. It has two hydraulically controlled disc clutches, connected to a drive shaft, extending through the device, and in engaged condition intended for connecting the drive shaft to either of two gear sleeves, each in splines engagement with an eccentric tube eccentrically journaled in relation to the drive shaft, and a torque transmitting mechanism with a gear ratio of 1:1 between the eccentric tube and a differential case sleeve, coaxial with the drive shaft and forming part of a differential case of a differential on the drive axle, to which differential the torque vectoring device is connected.Type: ApplicationFiled: October 14, 2010Publication date: April 14, 2011Inventors: Lars Severinsson, Ola Nicklasson
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Patent number: 7497306Abstract: A disc brake with self-servo effect comprises: a movable ramp plate connected to a brake pad for engagement with a brake disc, a ramp bridge, stationary in relation to the ramp plate, rollers movable in ramps in surfaces facing each other of the ramp plate and the ramp bridge, and means for imparting a control movement on the ramp plate. The arrangement is such that a movement of the ramp plate in the tangential direction of the brake disc will cause it to move towards or away from the brake disc. Slack adjusting means for compensating for the wear of the brake pad are arranged between the ramp plate and the brake pad.Type: GrantFiled: March 13, 2006Date of Patent: March 3, 2009Assignee: Haldex Brake Products ABInventor: Lars Severinsson
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Publication number: 20080217117Abstract: A disc brake comprises a disc brake caliper, which includes a brake application mechanism with an input element, and a service brake actuator providing a brake application force to the input element via a push rod. An electromechanical brake actuator is arranged between the caliper and the service brake actuator and applies its force at will on the push rod.Type: ApplicationFiled: March 3, 2008Publication date: September 11, 2008Inventors: Lars Severinsson, Goran Stensson
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Patent number: 7401686Abstract: A device in a vehicle brake arrangement for determining the applied brake force comprises an enclosed elastically deformable medium (20), on which the reaction force from the brake force is to act. An axially movable push rod (22) is in contact with the medium (20) for transmitting a force therefrom, and sensor means (26; 28) are provided for sensing the force in the push rod.Type: GrantFiled: November 26, 2003Date of Patent: July 22, 2008Assignee: Haldex Brake Products ABInventor: Lars Severinsson
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Patent number: 7395736Abstract: An all-wheel drive system for a vehicle having an engine and a drive shaft is arranged between the drive shaft and front and rear propellable shafts. These shafts are interconnected by first and second clutches respectively, and the propellable shafts are coupled to front and rear wheels, for transferring torque from the drive shaft to the front and/or rear wheels. The all-wheel drive system further includes at least first and second actuators that are coupled to at least first and second clutches, where at least the first clutch is engaged by a spring and at least the first actuator is coupled for disengaging the first clutch when the first actuator is operated. The second actuator is coupled for engaging the second clutch when the second actuator is operated.Type: GrantFiled: June 21, 2007Date of Patent: July 8, 2008Assignee: Haldex Traction ABInventors: Per-Olof Davidsson, Bo Lundström, Lars Severinsson
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Publication number: 20080156593Abstract: An electrically actuated brake assembly includes a brake disc, a brake pad, and an electric motor having a rotatable output shaft. A service brake transmission in operative rotational communication with the output shaft causes service braking of the vehicle in response to rotation of the output shaft, and an adjuster mechanism is operable to adjust a distance between the brake pad and the brake disc. An adjuster transmission operatively connected between the output shaft and the adjuster mechanism causes operative rotational communication between the output shaft and the adjuster mechanism when the adjuster transmission is engaged so as to transmit rotational movement of the output shaft to the adjuster mechanism, and causes there to be no operative rotational communication between the output shaft and the adjuster mechanism when the adjuster transmission is disengaged so as to not transmit rotational movement of the output shaft to the adjuster mechanism.Type: ApplicationFiled: December 29, 2006Publication date: July 3, 2008Inventors: Lars Severinsson, Anders Lindqvist
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Patent number: 7389858Abstract: The present invention relates to a disc brake having a housing, a clamping device, a push rod, and a self-activating adjustment device, whereby the adjustment device includes a first subassembly and a second subassembly. According to the invention the adjustment device includes an assembling joint, which makes possible the transmission of a rotary motion from the first subassembly to the second subassembly, whereby the assembling joint allows an axial relative motion between the first subassembly and the second subassembly, whereby the assembling joint permits an axial relative motion between the first subassembly and the second subassembly of the adjustment device. According to a particular embodiment of the invention, a misalignment of the push rod inside a place, which lies parallel to the brake disc, can occur with respect to the housing, without resulting in jamming of the cylindrical element with respect to the push rod and housing.Type: GrantFiled: January 12, 2006Date of Patent: June 24, 2008Assignee: Haldex Brake Products ABInventors: Stefan Sandberg, Lars Severinsson
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Publication number: 20080121472Abstract: The invention refers to a disc brake with self-servo effect with a caliper overlapping a brake disc, comprising a pressure element provided with a brake pad for engagement with the brake disc, a support element, at least one bearing element, by means of which the pressure element is supported against the support element, and means for adjusting a control force acting on the pressure element substantially transverse to the brake disc, whereby means for determining the contact forces of the at least one bearing element in the support element and means for determining the friction force from said determined contact forces are provided. In addition, the present invention refers to a method for determining the friction force on the brake disc of such a disc brake in that the contact forces of the at least one bearing element in the support element, and the friction force at the brake disc from said determined contact forces are determined.Type: ApplicationFiled: November 27, 2007Publication date: May 29, 2008Inventor: Lars Severinsson
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Publication number: 20080099287Abstract: A disc brake includes a mechanism for bringing at least one brake pad into engagement with a rotating brake disc. The brake pad is movable, in relation to the disc brake itself, to a certain extent together with the brake disc. A guiding mechanism is provided for positively guiding the brake pad in the tangential or rotational direction of the brake disc.Type: ApplicationFiled: December 27, 2007Publication date: May 1, 2008Inventor: Lars Severinsson
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Patent number: 7344007Abstract: The invention relates to a disk brake provided with a brake caliper comprising a brake disk, a sliding member which can be displaced in a vertical manner in relation to the surface of the brake disk in the brake caliper and can be engaged against the brake disk, and a clamping device comprising a rotary lever and a rotational body. In one embodiment of the invention, the rotary lever comprises a domed-shaped control surface whereon the rotational body is arranged in a rotational contact position. By pivoting said rotary lever in a radial segment bearing, the rotational body and the rotary lever modify their position, in relation to each other, such that the sliding member is displaced in order to apply braking force. The rotational body then carries out a full rotational movement on the control surface.Type: GrantFiled: March 11, 2005Date of Patent: March 18, 2008Assignee: Haldex Brake Products ABInventor: Lars Severinsson
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Publication number: 20080004150Abstract: The present invention relates to an all-wheel drive system for a vehicle having an engine and a drive shaft, and where the all-wheel drive system is arranged between the drive shaft and front and rear propellable shafts. These shafts are interconnected by first and second clutches resp., and the propellable shafts are coupled to front and rear wheels, for transferring torque from the drive shaft to the front and/or rear wheels. The all-wheel drive system further comprises at least first and second actuators that are coupled to at least first and second clutches, where at least said first clutch is engaged by a spring and at least said first actuator is coupled for disengaging said first clutch when the first actuator is operated. The second actuator is coupled for engaging said second clutch when the second actuator is operated.Type: ApplicationFiled: June 21, 2007Publication date: January 3, 2008Inventors: Per-Olof Davidsson, Bo Lundstrom, Lars Severinsson
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Patent number: 7299899Abstract: The present invention concerns a digital sensor for monitoring the wear of lining material of a disc brake. The sensor is to be attached to the end of an adjusting shaft of an adjusting mechanism, which mechanism is used for adjusting the position of brake pads in relation to the brake disc. The sensor has two or more code parts of which one is rotated continuously by rotation of the adjustment shaft. The code parts have paths of codes to be read by detectors placed on a PCB. The PCB has circuitry to relate the position of the sensor to the wear of the lining material.Type: GrantFiled: September 25, 2003Date of Patent: November 27, 2007Assignee: Haldex Brake Products ABInventors: Lars Severinsson, Anders Persson, Luis Tormo
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Patent number: 7261193Abstract: The present invention concerns a disc brake having one or more sliding or floating brake discs. The discs are received on a hub by means of splines on the discs and hub, respectively. The discs have means to widen the support of each disc on the hub. The means may have the form of one or more rings, pins and/or clips attached to the discs.Type: GrantFiled: March 10, 2005Date of Patent: August 28, 2007Assignee: Haldex Brake Products ABInventors: Joakim Gripemark, Lars Severinsson, Anders Ortegren, Patrik Kall
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Patent number: 7182181Abstract: The present invention concerns a disc brake having a fixed brake disc. On each of the opposing sides of the brake disc at least one brake pad is arranged. Furthermore, the disc brake has an actuator and a clamping device. The clamping device is axially fixed in relation to the brake disc, in order to facilitate that the brake pads are given a symmetrical movement in relation to the brake disc.Type: GrantFiled: January 10, 2005Date of Patent: February 27, 2007Assignee: Haldex Brake Products ABInventor: Lars Severinsson