Patents by Inventor Bo Lundstrom
Bo Lundstrom 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: 11965586Abstract: An electromechanical actuator (100) is provided. The actuator comprises an electrical motor (110) controlling a ball ramp mechanism. The ball ramp mechanism is configured to allow for mutual rotation of a first and second rotational member (120, 30) up to a first torque of the electrical motor (110), and to allow for axial separation of the first and second rotational members (120, 130) at a second torque of the electrical motor (110).Type: GrantFiled: January 25, 2019Date of Patent: April 23, 2024Assignee: BORGWARNER SWEDEN ABInventors: Bo Lundstrom, Lars Severinsson
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Publication number: 20210033184Abstract: An electromechanical actuator (100) is provided. The actuator comprises an electrical motor (110) controlling a ball ramp mechanism. The ball ramp mechanism is configured to allow for mutual rotation of a first and second rotational member (120, 30) up to a first torque of the electrical motor (110), and to allow for axial separation of the first and second rotational members (120, 130) at a second torque of the electrical motor (110).Type: ApplicationFiled: January 25, 2019Publication date: February 4, 2021Applicant: BorgWarner Sweden ABInventors: Bo Lundstrom, Lars Severinsson
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Patent number: 10823237Abstract: A rear axle drive (2) for an AWD vehicle is presented. The rear axle drive (2) is connected to an hydraulic AWD coupling (3), wherein the rear axle drive (2) comprises a lubrication valve (4) for controlling the level of lubricant in at least one lubricant reservoir (6, 7) of the rear axle drive (2) for providing lubricant to gears and/or bearings of the rear axle drive (2). The lubrication valve (4) is functionally connected to a shut-off valve (5) of the AWD coupling (3) and the lubrication valve (4) of the rear axle drive (3) is controlled by movement of an actuating member (51, 54) of the AWD coupling (3).Type: GrantFiled: November 10, 2016Date of Patent: November 3, 2020Assignee: BorgWarner Sweden ABInventor: Bo Lundstrom
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Patent number: 10711846Abstract: A hydraulic disc coupling (1) for a system distributing torque between the left and right wheels and/or the front and rear axles of a vehicle is provided. A coupling piston (6) is configured to be mechanically locked by an integrated locking arrangement (23), when the coupling piston (6) is actuated to act on the disc package (8), such that the coupling remains engaged whereby the input (2) is connected to the output (7) of the coupling (1) without hydraulic pressure acting on the coupling piston (6). Unlocking of the integrated locking arrangement (23) is provided by again actuating the coupling piston (6).Type: GrantFiled: June 2, 2016Date of Patent: July 14, 2020Assignee: BorgWarner Sweden ABInventors: Lars Severinsson, Bo Lundström
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Patent number: 10487883Abstract: A dog clutch comprises first (160) and second (170) drive shafts, the drive shafts being connectable to one another by a dual spline connector (150). The dual spline connector is movable along a longitudinal axis of the first (160) and second (170) drive shafts and is provided with an internal spline that mates with an external spline of the first drive shaft. The dual spline connector is further provided with an external spline that upon axial movement may be connected or disconnected to an internal spline of the second drive shaft. Either or both of the external spline of the dual spline connector and/or the internal spline of the second drive shaft is or are provided with means for allowing partial connection of the internal and external splines.Type: GrantFiled: December 14, 2015Date of Patent: November 26, 2019Assignee: BorgWarner Sweden ABInventor: Bo Lundström
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Patent number: 10408284Abstract: A hydraulic system including a hydraulically actuated clutch, a hydraulically actuated shifting piston, and a pressure source for actuating the clutch as well as the shifting piston. The movement of the shifting piston also controls a valve function which serves to open a connection from the pressure source to the clutch only when the shifting piston has reached one of its end positions.Type: GrantFiled: January 31, 2015Date of Patent: September 10, 2019Assignee: BorgWarner Sweden ABInventors: Kristoffer Nilsson, Bo Lundstrom, Per-Olof Davidsson, Gustaf Lagunoff
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Patent number: 10317916Abstract: A hydraulic pump assembly comprises a rotatable piston drum (20) with at least one centrifugal lever (23) pivotally attached thereto for radial movements between radial flanges (20?) under the action of centrifugal force at rotation of the piston drum. The centrifugal lever (23) is arranged to control the position of a valve member, preferably a ball (22), at the opening end of a bore (21) in the piston drum (20). There is a defined friction surface (28; 32) between the lever (23) and one of the radial flanges (20?), and there are spring means (29-31; 25, 33) for resiliently biasing the lever against said one of the flanges.Type: GrantFiled: February 11, 2014Date of Patent: June 11, 2019Assignee: BorgWarner Sweden ABInventors: Gustaf Lagunoff, Axel Wallgren, Gunnar Jonesand, Bo Lundström
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Patent number: 10253770Abstract: A hydraulic pump assembly for a vehicle is provided, comprising an electrical motor, a hydraulic pump driven by the electrical motor, and a centrifugal regulator connected with a pressure overflow valve connected to the oil outlet of the hydraulic pump, characterized in that the pump assembly further comprises at least two input check valves and at least two output check valves arranged such that a first pressure outlet port is formed when the motor is rotating in a first direction, and a second pressure outlet port is formed when the motor is rotating in an opposite direction.Type: GrantFiled: January 31, 2015Date of Patent: April 9, 2019Assignee: BorgWarner Sweden ABInventor: Bo Lundstrom
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Publication number: 20180347640Abstract: A rear axle drive (2) for an AWD vehicle is presented. The rear axle drive (2) is connected to an hydraulic AWD coupling (3), wherein the rear axle drive (2) comprises a lubrication valve (4) for controlling the level of lubricant in at least one lubricant reservoir (6, 7) of the rear axle drive (2) for providing lubricant to gears and/or bearings of the rear axle drive (2). The lubrication valve (4) is functionally connected to a shut-off valve (5) of the AWD coupling (3) and the lubrication valve (4) of the rear axle drive (3) is controlled by movement of an actuating member (51, 54) of the AWD coupling (3).Type: ApplicationFiled: November 11, 2016Publication date: December 6, 2018Inventor: BO LUNDSTROM
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Publication number: 20180172083Abstract: A hydraulic disc coupling (1) for a system distributing torque between the left and right wheels and/or the front and rear axles of a vehicle is provided. A coupling piston (6) is configured to be mechanically locked by an integrated locking arrangement (23), when the coupling piston (6) is actuated to act on the disc package (8), such that the coupling remains engaged whereby the input (2) is connected to the output (7) of the coupling (1) without hydraulic pressure acting on the coupling piston (6). Unlocking of the integrated locking arrangement (23) is provided by again actuating the coupling piston (6).Type: ApplicationFiled: June 2, 2016Publication date: June 21, 2018Inventors: Lars Severinsson, Bo LUNDSTRÖM
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Patent number: 9885392Abstract: A shut-off valve for shutting-off a supply at will, wherein the shut-off valve comprises an axially movable valve slide, provided with a transverse valve flange for cooperation with a fixed valve seat, the slide being aetuatable in a closing direction by spring force and in an opening direction by a hydraulically operated ball, having an actuation end position in a sealing ball seat.Type: GrantFiled: February 6, 2014Date of Patent: February 6, 2018Assignee: BorgWarner Torq Transfer Systems ABInventor: Bo Lundstrom
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Publication number: 20170363155Abstract: A dog clutch comprises first (160) and second (170) drive shafts, the drive shafts being connectable to one another by a dual spline connector (150). The dual spline connector is movable along a longitudinal axis of the first (160) and second (170) drive shafts and is provided with an internal spline that mates with an external spline of the first drive shaft. The dual spline connector is further provided with an external spline that upon axial movement may be connected or disconnected to an internal spline of the second drive shaft. Either or both of the external spline of the dual spline connector and/or the internal spline of the second drive shaft is or are provided with means for allowing partial connection of the internal and external splines.Type: ApplicationFiled: December 14, 2015Publication date: December 21, 2017Inventor: Bo LUNDSTRÖM
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Patent number: 9835207Abstract: A disconnected, hydraulic disc coupling (4) in an AWD vehicle with a hydraulic cylinder (14) for its actuation is to be quickly connected or engaged. The effective piston area in the cylinder (14) is for that reason reduced during the connection phase.Type: GrantFiled: January 8, 2014Date of Patent: December 5, 2017Assignee: BorgWarner TorqTransfer Systems ABInventors: Bo Lundstrom, Lars Severinsson, Johan Nilsson, Magnus Persson
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Publication number: 20170002806Abstract: A hydraulic pump assembly for a vehicle is provided, comprising an electrical motor, a hydraulic pump driven by the electrical motor, and a centrifugal regulator connected with a pressure overflow valve connected to the oil outlet of the hydraulic pump, characterized in that the pump assembly further comprises at least two input check valves and at least two output check valves arranged such that a first pressure outlet port is formed when the motor is rotating in a first direction, and a second pressure outlet port is formed when the motor is rotating in an opposite direction.Type: ApplicationFiled: January 31, 2015Publication date: January 5, 2017Inventor: Bo LUNDSTRÖM
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Publication number: 20160363180Abstract: A hydraulic system is provided, comprising a hydraulically actuated clutch, a hydraulically actuated shifting piston, and a pressure source for actuating the clutch as well as the shifting piston. The movement of the shifting piston also controls a valve function which serves to open a connection from the pressure source to the clutch only when the shifting piston has reached one of its end positions.Type: ApplicationFiled: January 31, 2015Publication date: December 15, 2016Inventors: KRISTOFFER NILSSON, BO LUNDSTROM, PER-OLOF DAVIDSSON, GUSTAF LAGUNOFF
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Publication number: 20160311319Abstract: A final drive for a road vehicle comprises a pinion gear (10) on a pinion axle (4), the pinion gear being in gear engagement with a crown gear (12) journaled for rotation transversely to the pinion axle (4). It is combined with an all wheel drive (A WD) coupling, comprising a disc package (2) axially controlled by a hydraulic piston (5) for optionally transmitting torque from an ingoing axle (3) to the pinion axle (4) as well as a disc drum (2A) or similar means for rotatably connecting the disc package (2) to the pinion axle. An axial stop (9, 9?) is arranged on the pinion axle (4) for transferring axial forces from the disc drum (2A) to the pinion axle.Type: ApplicationFiled: December 9, 2014Publication date: October 27, 2016Inventor: BO LUNDSTROM
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Publication number: 20160048133Abstract: A hydraulic pump assembly comprises a rotatable piston drum (20) with at least one centrifugal lever (23) pivotally attached thereto for radial movements between radial flanges (20?) under the action of centrifugal force at rotation of the piston drum. The centrifugal lever (23) is arranged to control the position of a valve member, preferably a ball (22), at the opening end of a bore (21) in the piston drum (20). There is a defined friction surface (28; 32) between the lever (23) and one of the radial flanges (20?), and there are spring means (29-31; 25, 33) for resiliently biasing the lever against said one of the flanges.Type: ApplicationFiled: February 11, 2014Publication date: February 18, 2016Applicant: BorgWarner TorqTransfer Systems ABInventors: GUSTAF LAGUNOFF, AXEL WALLGREN, GUNNAR JONESAND, BO LUNDSTRÖM
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Publication number: 20160010698Abstract: A hydraulic disc coupling (4) for an AWD vehicle has means for supplying cooling and lubricating oil to the disc package (12) of the coupling, said means including a shut-off valve (32) for shutting-off said supply at will. The shut-off valve (32) comprises an axially movable valve slide (42), provided with a transverse valve flange (44) for cooperation with a valve seat (45) in the coupling housing, the slide being actuatable in a closing direction by spring force and in an opening direction by a hydraulically operated ball (47), having an actuation end position in a sealing ball seat (51).Type: ApplicationFiled: February 6, 2014Publication date: January 14, 2016Inventor: Bo LUNDSTROM
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Publication number: 20160010706Abstract: A disconnected, hydraulic disc coupling (4) in an AWD vehicle with a hydraulic cylinder (14) for its actuation is to be quickly connected or engaged. The effective piston area in the cylinder (14) is for that reason reduced during the connection phase.Type: ApplicationFiled: January 8, 2014Publication date: January 14, 2016Inventors: Bo Lundstrom, LARS SEVERINSSON, JOHAN NILSSON, MAGNUS PERSSON
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Publication number: 20140008172Abstract: A hydraulic disc coupling (4) for an AWD vehicle is provided with an actuator pump (17) for actuating its disc package (12). There is a separate lubrication pump (30) for the purpose of both supplying lubricating and cooling oil to the disc package (12) at normal operating conditions and supporting the actuator pump (17) in quickly engaging the coupling (4) after its disconnection and possible emptying of lubricating and cooling oil.Type: ApplicationFiled: September 22, 2011Publication date: January 9, 2014Applicant: BorgWarner Torq Transfer Systems ABInventor: Bo Lundstrom