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公开(公告)号：US11128188B2
公开(公告)日：2021-09-21
申请号：US16574092
申请日：2019-09-18
Inventor： James Brent Klassen , Damian Spasov , Bradley Pope
IPC: H02K1/27 , H02K1/22 , H02K1/32 , B25J9/00 , B25J9/12 , B25J15/00 , B25J15/02 , B25J15/08 , B25J17/00 , B25J19/00 , H02K1/02 , H02K1/06 , H02K1/08 , H02K1/14 , H02K1/16 , H02K1/24 , H02K3/04 , H02K3/12 , H02K3/24 , H02K3/26 , H02K5/04 , H02K5/16 , H02K5/18 , H02K7/08 , H02K9/02 , H02K9/19 , H02K15/04 , H02K16/04 , H02K19/10 , H02K21/00 , H02K21/14 , H02K21/22 , H02K21/24 , H02K41/03 , H02K9/00 , H02K1/20 , H02K7/14
Abstract: An electric motor has a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles. The first and second carriers each define an axis. An airgap is formed between the first and second carriers when in an operational position. An inner thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. An outer thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. The electromagnetic elements of each of the first and second carriers are arranged radially inward of the outer thrust bearing and radially outward of the inner thrust bearing. The inner thrust bearing and the outer thrust bearing are arranged to maintain the airgap against a magnetic attraction of the electromagnetic elements of the first and second carriers.
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公开(公告)号：US10476323B2
公开(公告)日：2019-11-12
申请号：US15235088
申请日：2016-08-11
Inventor： James Brent Klassen
IPC: H02K1/27 , H02K1/28 , H02K1/22 , H02K1/20 , H02K16/04 , H02K5/16 , H02K1/14 , B25J9/12 , H02K1/02 , H02K1/06 , H02K3/04 , H02K5/04 , H02K9/00 , H02K21/24 , H02K15/04 , H02K7/08 , H02K9/02 , H02K1/16 , H02K3/12 , H02K41/03 , H02K1/08 , H02K1/24 , B25J15/08 , B25J17/00 , H02K21/00 , B25J9/00 , B25J15/00 , B25J15/02 , B25J19/00 , H02K21/14 , H02K21/22 , H02K1/32 , H02K3/24 , H02K3/26 , H02K5/18 , H02K9/19 , H02K19/10 , H02K7/14
Abstract: An electric machine comprising a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier. An airgap is provided between the first carrier and the second carrier. The electromagnetic elements of the first carrier include posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm. The first carrier and the second carrier together define a size of the electric machine. The magnetic poles having a pole pitch in mm. The size of the motor, pole pitch and post height are selected to fall within a region in a space defined by size, pole pitch and post height that provides a benefit in terms of force or torque per weight per excitation level.
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公开(公告)号：US11139707B2
公开(公告)日：2021-10-05
申请号：US16317726
申请日：2017-07-14
Inventor： James Brent Klassen
IPC: H02K1/22 , H02K1/27 , H02K1/32 , H02K7/08 , H02K21/24 , H02K1/14 , F16C19/10 , F16C19/54 , F16C35/06 , F16C19/49 , F16C19/18 , B25J9/12
Abstract: An electric machine has a stator having an array of electromagnetic elements. A rotor is mounted on bearings and has an array of rotor posts. The rotor posts each have a length defining opposed ends and the array of rotor posts extends along the rotor in a direction perpendicular to the length of each of the rotor posts. The rotor has electromagnetic elements defining magnetic poles placed between the plurality of rotor posts. An airgap is formed between the rotor and the stator when they are in an operational position. A plurality of rotor flux restrictors are formed on the rotor, and each lies adjacent to one of the opposed ends of the rotor posts.
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公开(公告)号：US11043862B2
公开(公告)日：2021-06-22
申请号：US16324448
申请日：2017-08-11
Inventor： James Brent Klassen
Abstract: A rotor for an electric machine having posts extending partially or completely between end irons. Each end iron is formed of a single piece of magnetic material with the posts extending from it, including the other end iron where the posts extend completely between them. Magnets are arranged between the posts with poles facing the posts to concentrate flux. In order to prevent too much of the flux from being drawn into flux paths through the end irons, the total magnetic flux is made to exceed a saturation flux of at least a portion of the flux path. This may be achieved by using interdigitated posts extending only partially between the end irons to provide gaps in the flux path, by providing flux resistors in the end irons to reduce a saturation flux below the total flux, or by using high aspect ratio magnets or posts so that the magnetic flux exceeds a saturation flux of the posts or end irons.
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公开(公告)号：US10369071B2
公开(公告)日：2019-08-06
申请号：US15309422
申请日：2015-05-05
Inventor： James Brent Klassen
IPC: A61H3/00 , B25J13/02 , A61F2/70 , A61F5/01 , B25J3/04 , B25J9/00 , A61F2/72 , A61F2/50 , A61F2/68
Abstract: An exoskeleton suit allows a user to control the legs using the arms. Preferably, there is two-way feedback/control between the legs and arms causing movement of leg joints to be proportional to movement of arm joints. Haptic forces and control forces on the joints may also be proportional. The relative magnitudes of the movements and forces may be adjustable. Rotary or angular actuators may be used. A twisting actuator is also provided using a pair of bending actuators mounted side by side to provide torsional displacement of frame members. The ability to support a portion of the user's weight on the hand grips is possible while simultaneously controlling the lower body movement by applying pitch, roll and yaw movements to that hand grip.
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Patent Agency Ranking
公开(公告)号：US11143256B2
公开(公告)日：2021-10-12
申请号：US16617502
申请日：2018-05-31
Inventor： James Brent Klassen , Damian Spasov , Christopher Esterer
IPC: F16D67/06 , F16D51/02 , F16D63/00 , F16D65/18 , F16D55/00 , F16D121/14 , F16D121/22
Abstract: A magnetic brake for a motor uses the magnetic force on the surface of a flux concentrating rotor to pull a flexible brake spring or friction sheet into friction contact with the rotor. An electromagnetic stator pulls the flexible brake spring or friction sheet away from the rotor when it is energized. The brake spring may be a variable thickness around the circumference in a radial flux motor or radially in an axial flux motor and is thicker near where it is fixed to the housing. The brake spring may be split so it can clamp down on the rotor symmetrically. The OD of the brake spring may be closer to the surrounding stator near the fixed section of the brake spring so the air gap to the brake stator is smaller and the gap to the rotor and the ID of the brake spring is larger to allow the brake stator to pull on this area with greater force initially when it is energized to disengage the brake.
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公开(公告)号：US20190288587A1
公开(公告)日：2019-09-19
申请号：US16317756
申请日：2017-07-14
Inventor： James Brent Klassen , Bradley Christopher Pope
Abstract: An actuator for high rotational speed applications using a stator which utilizes laminated features to reduce Eddy current losses in the stator. This construction allows high pole counts while providing the efficiency and high speed benefits of a laminated construction. Laminated construction is very challenging for a high pole count lightweight motor, but embodiments of the device provide structural strength, and rigidity, as well as other benefits such as low manufacturing cost, high heat dissipation, integrated cooling channels, and light weight construction. Many of these benefits result from the use of a laminate sandwich of non-magnetic, heat conductive material, such as anodized aluminum, as a structural member of the stator.
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公开(公告)号：US11043885B2
公开(公告)日：2021-06-22
申请号：US16317756
申请日：2017-07-14
Inventor： James Brent Klassen , Bradley Christopher Pope
Abstract: An actuator for high rotational speed applications using a stator which utilizes laminated features to reduce Eddy current losses in the stator. This construction allows high pole counts while providing the efficiency and high speed benefits of a laminated construction. Laminated construction is very challenging for a high pole count lightweight motor, but embodiments of the device provide structural strength, and rigidity, as well as other benefits such as low manufacturing cost, high heat dissipation, integrated cooling channels, and light weight construction. Many of these benefits result from the use of a laminate sandwich of non-magnetic, heat conductive material, such as anodized aluminum, as a structural member of the stator.
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公开(公告)号：US10075030B2
公开(公告)日：2018-09-11
申请号：US15235036
申请日：2016-08-11
Inventor： James Brent Klassen
IPC: H02K21/24 , H02K5/18 , H02K1/20 , H02K16/04 , H02K5/16 , H02K1/27 , H02K1/14 , B25J9/12 , H02K1/02 , H02K1/06 , H02K3/04 , H02K5/04 , H02K9/00 , H02K15/04 , H02K7/08 , H02K9/02 , H02K1/16 , H02K3/12 , H02K41/03
CPC classification number: H02K1/20 , B25J9/0009 , B25J9/12 , B25J15/0009 , B25J15/0233 , B25J15/08 , B25J17/00 , B25J19/0029 , H02K1/02 , H02K1/06 , H02K1/08 , H02K1/14 , H02K1/16 , H02K1/24 , H02K1/27 , H02K1/274 , H02K1/2773 , H02K1/278 , H02K1/2793 , H02K1/32 , H02K3/04 , H02K3/12 , H02K3/24 , H02K3/26 , H02K5/04 , H02K5/16 , H02K5/18 , H02K7/08 , H02K7/14 , H02K9/005 , H02K9/02 , H02K9/19 , H02K15/04 , H02K16/04 , H02K19/10 , H02K21/00 , H02K21/14 , H02K21/22 , H02K21/24 , H02K41/031 , H02K2201/12 , H02K2213/03
Abstract: An electric machine comprise a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier. An airgap is provided between the first carrier and the second carrier. The electromagnetic elements of the first carrier include posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm. The first carrier and the second carrier together define a size of the electric machine. The magnetic poles having a pole pitch in mm. The size of the motor, pole pitch and post height are selected to fall within a region in a space defined by size, pole pitch and post height that provides a benefit in terms of force or torque per weight per excitation level.
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