公开(公告)号：US20240339878A1

公开(公告)日：2024-10-10

申请号：US18623307

申请日：2024-04-01

Applicant: Techtronic Cordless GP

Inventor： Jarrett Dunston ,  Md Tawhid Bin Tarek ,  Cody Radivoyevitch

IPC: H02K1/2791 ,  H02K9/06 ,  H02K11/33 ,  H02K21/22

CPC classification number: H02K1/2791 ,  H02K9/06 ,  H02K11/33 ,  H02K21/22 ,  H02K2211/03

Abstract: An electric motor assembly and a rotor for an electric motor are provided. A rotor includes a yoke, and a plurality of magnets held by the yoke. The yoke is formed from a plurality of laminations. The yoke includes an inner peripheral surface surrounding a cavity. The inner peripheral surface has a plurality of rectangular cut-out sections that are each configured to receive a respective magnet of the plurality of magnets. The inner peripheral surface further includes a protrusion extending toward the cavity, and each protrusion having a flat surface facing the cavity.

公开(公告)号：US12071227B2

公开(公告)日：2024-08-27

申请号：US16022711

申请日：2018-06-29

Applicant: NIDEC CORPORATION

Inventor： Norihisa Imaizumi ,  Hiroshi Ito

IPC: B64C27/08 ,  A63H27/00 ,  A63H30/04 ,  B64C39/02 ,  B64D27/24 ,  B64U10/10 ,  B64U30/20 ,  B64U50/19 ,  H02K1/14 ,  H02K1/2791 ,  H02K11/21 ,  H02K11/215 ,  H02K11/25 ,  H02K11/27 ,  H02K21/22 ,  B64U10/13

CPC classification number: B64C27/08 ,  A63H27/12 ,  A63H30/04 ,  B64C39/024 ,  B64D27/24 ,  H02K1/146 ,  H02K1/2791 ,  H02K11/21 ,  H02K11/215 ,  H02K11/25 ,  H02K11/27 ,  H02K21/22 ,  B64U10/10 ,  B64U10/13 ,  B64U30/20 ,  B64U50/19 ,  B64U2201/20

Abstract: As one aspect of this multicopter, the multicopter flies on the basis of information from a flight controller and is provided with the following: a main body section; a plurality of propulsion units having rotating rotary wing, the propulsion units being attached to the main body section; motors installed in the main body section or the propulsion units; at least one first detection unit that detects motor information; and a wireless transmission unit that wirelessly transmits, to the outside, the motor information detected by the first detection unit.

公开(公告)号：US20240275226A1

公开(公告)日：2024-08-15

申请号：US18437223

申请日：2024-02-08

Applicant: MAHLE International GmbH

Inventor： Andraz Strnisnik ,  David Gorkic ,  Mitja Zavadlav ,  Tadej Kamnikar

IPC: H02K1/2791 ,  H02K5/173 ,  H02K7/08 ,  H02K15/03 ,  H02K21/22

CPC classification number: H02K1/2791 ,  H02K5/1735 ,  H02K7/085 ,  H02K15/03 ,  H02K21/22

Abstract: A permanent magnet rotor for a motor is disclosed. The rotor includes a generally cylindrical outer section and a bearing section arranged radially inwards of the cylindrical outer section for rotatably supporting the rotor. The cylindrical outer section and the bearing section are connected by a generally radially extending cover wall. The cylindrical outer section, the bearing section and the radially extending cover wall define at least partly a space for receiving a stator. The cylindrical outer section includes an annular ring of a magnetic material, a plurality of annularly disposed magnets and an inner wall, the inner wall having a substantially cylindrical inner surface. Each magnet has a first and a second end in a circumferential direction and is provided with a radially inwards facing surface having a central section and first and second tapered end sections in the circumferential direction.

公开(公告)号：US12027950B2

公开(公告)日：2024-07-02

申请号：US17678199

申请日：2022-02-23

Applicant: CR FLIGHT L.L.C.

Inventor： Randell J. Wishart ,  Jonathan D. Emigh ,  Jason Emigh ,  Ray Porter

IPC: H02K7/00 ,  B64D27/24 ,  H02K1/2791 ,  H02K5/24 ,  H02K7/14 ,  H02K13/00 ,  H02K21/24 ,  H02K23/60 ,  B64C11/48

CPC classification number: H02K5/24 ,  B64D27/24 ,  H02K1/2791 ,  H02K7/003 ,  H02K7/14 ,  H02K13/003 ,  H02K21/24 ,  H02K23/60 ,  B64C11/48

Abstract: An improved counter-rotating (CR) differential electric motor assembly is utilized to power an aircraft vehicle or fan for moving a gas and includes two oppositely rotating propellers that may be mounted to horizontal flight and vertical lift-off aircraft or a fan housing in spaces similar in size to mounting spaces for traditional motors having only one propeller and includes a hollow central shaft and slip ring assembly that is mounted either within, slight above, or total above oppositely rotating components and around the hollow central shaft.

公开(公告)号：US12027930B2

公开(公告)日：2024-07-02

申请号：US17299161

申请日：2019-12-17

Applicant: DENSO CORPORATION

Inventor： Shota Fujii ,  Tomoki Yamashita ,  Naoki Matsumoto ,  Ryosuke Oguri

IPC: H02K23/66 ,  H02K1/10 ,  H02K1/2791 ,  H02K13/10 ,  H02P7/00 ,  H02P7/06

CPC classification number: H02K23/66 ,  H02K1/10 ,  H02K1/2791 ,  H02K13/10 ,  H02P7/0094 ,  H02P7/06 ,  H02K2213/03

Abstract: A DC motor is configured so that, while either one of a pair of power feeding brushes makes contact with two commutator segments, the other makes contact with only one of two commutator segments. The DC motor is further provided with: a plurality of coils; a filter unit; and a calculation unit. The number of turns of a predetermined coil among the plurality of coils is different from the numbers of turns of the other coils. The filter unit allows the passing of the waveform of current generated on the basis of the fact that the numbers of turns are different from each other, and interrupts the waveform of current generated at the switching of the states of the contacts of the power feeding brushes to the commutator segments. The calculation unit calculates a rotational speed from the waveform passed through the filter unit.

公开(公告)号：US20240129662A1

公开(公告)日：2024-04-18

申请号：US18545421

申请日：2023-12-19

Applicant: GoPro, Inc.

Inventor： Himay Shukla ,  Erich Tisch ,  Joyce Gorny ,  Eric Penrod ,  Kielan Crow

IPC: H04R1/28 ,  H02K1/2791 ,  H02K7/00 ,  H02K33/18 ,  H04R1/08

CPC classification number: H04R1/2876 ,  H02K1/2791 ,  H02K7/003 ,  H02K33/18 ,  H04R1/08 ,  H02K7/08

Abstract: A handheld image stabilization device with a housing, a gimbal, a motor, a printed circuit board (PCB), a microphone, and a dampener. The gimbal has three arms. The motor assembly has multiple motors such that respective ones of the multiple motors are located on respective ones of the three arms. The microphone is attached to a surface of the PCB and configured to detect audio waves, wherein the audio waves include acoustic noise from the motor assembly. The dampener is disposed between the motor assembly and the PCB, wherein the dampener is configured to reduce the acoustic noise from the motor assembly.

公开(公告)号：US11909260B2

公开(公告)日：2024-02-20

申请号：US17048197

申请日：2019-04-03

Applicant: Siemens Gamesa Renewable Energy A/S

Inventor： Ziad Azar ,  Erik Groendahl ,  Subhra Samanta ,  Arwyn Thomas

IPC: H02K1/16 ,  H02K3/12 ,  H02K15/02 ,  H02K1/2791 ,  H02K7/18

CPC classification number: H02K1/165 ,  H02K1/2791 ,  H02K3/12 ,  H02K15/024 ,  H02K7/183

Abstract: Provided is an electric generator including a stator including:



a stator yoke
a plurality of teeth,
a plurality of slots extending radially from the stator yoke to respective radial slot ends, the plurality of slots being circumferentially interposed between the teeth of the stator, each slot including a bottom portion adjacent to the stator yoke and a top portion adjacent to the respective radial slot end. The stator further includes a plurality of coils housed in the plurality of slots, each slot housing at least one coil in the bottom portion and at least another coil in the top portion, each coil housed in the bottom portion of a first slot of the plurality of slots being connected to another respective coil housed in the top portion of a second slot of the plurality of slots.

公开(公告)号：US20230421033A1

公开(公告)日：2023-12-28

申请号：US18242467

申请日：2023-09-05

Applicant: Linear Labs, LLC

Inventor： Fred E. Hunstable

IPC: H02K16/02 ,  H02K21/02 ,  H02K1/2791

CPC classification number: H02K16/02 ,  H02K21/028 ,  H02K1/2791 ,  H02K21/029 ,  H02K2213/09 ,  H02K21/12

Abstract: There are presented various embodiments disclosed in this application, including methods and systems of arranging permanent magnets to switch from a first configuration designed for a first torque output to a second configuration designed for a second torque output.

公开(公告)号：US20230412023A1

公开(公告)日：2023-12-21

申请号：US18242473

申请日：2023-09-05

Applicant: Linear Labs, LLC

Inventor： Fred E. Hunstable

IPC: H02K1/2796 ,  H02K1/02 ,  H02K21/14 ,  H02K3/28 ,  H02K15/08 ,  H02K3/12 ,  H02K21/12 ,  H02K1/14 ,  H02K1/30 ,  H02K1/2791

CPC classification number: H02K1/2796 ,  H02K1/02 ,  H02K21/14 ,  H02K3/28 ,  H02K15/08 ,  H02K21/24 ,  H02K21/125 ,  H02K1/145 ,  H02K1/30 ,  H02K1/2791 ,  H02K3/12

Abstract: Disclosed are various embodiments for a motor/generator where the stator is a coil assembly and the rotor is a magnetic toroidal cylindrical tunnel or where the rotor is a coil assembly and the stator is a magnetic toroidal cylindrical tunnel, and where the magnetic toroidal cylindrical tunnel includes magnets having a NNSS or SSNN pole configuration.

公开(公告)号：US11824404B2

公开(公告)日：2023-11-21

申请号：US17220943

申请日：2021-04-02

Applicant: Shandong Dingfeng Aviation Technology Co., Ltd.

Inventor： Yu Tian

IPC: H02K1/2791 ,  H02K1/32 ,  H02K9/06 ,  H02K9/22 ,  H02K11/33

CPC classification number: H02K1/2791 ,  H02K1/32 ,  H02K9/06 ,  H02K9/227 ,  H02K11/33

Abstract: A motor with an outer rotor, including an inner stator, an outer rotor with a cylindrical structure having an open end, a controller, and a cooling fan. The outer rotor is rotatably sleeved at one end of the inner stator in an axial direction of the inner stator; the controller is arranged at the other end of the inner stator; the cooling fan is annularly arranged in a circumferential direction of the outer rotor at one end of the outer rotor close to the controller, and is located in an avoidance space formed between the controller and the outer rotor, so as to convey air to the controller and the outer rotor.