公开(公告)号：US20240218918A1

公开(公告)日：2024-07-04

申请号：US18288357

申请日：2022-04-27

Applicant: Moog Inc.

Inventor： Seth E. Gitnes ,  Ming chih Weng

IPC: F16H25/20 ,  F16H25/22

CPC classification number: F16H25/2015 ,  F16H25/2204

Abstract: A linear actuator comprising a shaft and a nut that translates within a linear range of motion in response to relative rotation between the nut and shaft, a stop positioned at a travel limiting position and having an inner portion connected to the shaft, a radially compliant outer portion axially overlapping the inner portion and configured to rotate relative to the inner portion, and a cam roller portion disposed radially between the inner and outer portions and configured to move relative to a neutral orientation in response to relative rotation between the inner and outer portions, and the outer portion configured to radially bias the cam roller portion towards the neutral orientation; wherein rotation of the outer portion caused by the nut rotating into the outer portion provides an outward radial load at the cam roller portion on the outer portion that is absorbed by the outer portion.

公开(公告)号：US12018726B2

公开(公告)日：2024-06-25

申请号：US18143911

申请日：2023-05-05

Applicant: Skyryse, Inc.

Inventor： David James Manzanares ,  Nozar George Sadeghi ,  Gonzalo Javier Rey ,  David Evan Edwards

IPC: F16H25/20 ,  F16D55/224 ,  F16D65/18 ,  F16H25/22 ,  F16H25/24 ,  F16D66/00 ,  F16D121/24 ,  F16D125/40

CPC classification number: F16D65/18 ,  F16D55/224 ,  F16H25/2015 ,  F16H25/205 ,  F16H25/2204 ,  F16H25/2454 ,  F16D2066/003 ,  F16D2121/24 ,  F16D2125/40 ,  F16H2025/2081

Abstract: Some embodiments relate to an electro-mechanical actuator that includes a screw, structurally segregated (split) housings, first and second nuts coupled to the screw, a sensor assembly, a plurality of motors, and a controller. The first nut is coupled to a first mounting point, and the second nut is coupled to a second mounting point. The sensor assembly may generate signals indicative of (e.g., relative) positions of left and right units of the actuator or positions of the first nut and the second nut on the screw. The controller controls the motors based on the signals generated by the sensor assembly. The motors may rotate each nut about a screw axis of the screw. This rotation results in one or both nuts moving along the screw. Movement between the first nut and the second nut along the screw adjusts a distance between the first mounting point and the second mounting point.

公开(公告)号：US20240102566A1

公开(公告)日：2024-03-28

申请号：US18370951

申请日：2023-09-21

Applicant: Ian Rodgers ,  Moises Contreras Hernandez

Inventor： Ian Rodgers ,  Moises Contreras Hernandez

IPC: F16K17/06 ,  F16H25/20

CPC classification number: F16K17/06 ,  F16H25/2015 ,  F16H2025/209 ,  F16K2200/304

Abstract: A regulating valve having anti-seize characteristics provides a linear drive system intermediate a drive shaft connected to a motor and a lifter connected to the regulator spring. The linear drive system translates the rotational motion of the drive shaft into preferably, linear only motion of the lifter, thereby preventing binding internal to the valve.

公开(公告)号：US11920660B2

公开(公告)日：2024-03-05

申请号：US17619139

申请日：2021-05-12

Applicant: SHANDONG UNIVERSITY

Inventor： Mingxing Lin ,  Jiajia Zhao ,  Yanfeng Zhao ,  Xianchun Song ,  Hongkui Jiang

IPC: F16H25/22 ,  F16H25/20

CPC classification number: F16H25/2204 ,  F16H25/2006 ,  F16H25/2015

Abstract: A screw pair including inner walls of screw holes in a working nut and a pre-tightening nut with sensor groups including a plurality of displacement sensors capable of measuring a value of a gap between an inner and outer wall of a screw in a diameter direction of the screw hole, the group includes four displacement sensors evenly distributed in a circumferential direction of the screw hole, every two displacement sensors are paired and symmetrical about a center axis, and projections of a plurality of sensor groups in an axial direction overlap the screw; and an adaptive excitation coil is mounted to each displacement sensor, which is capable of attracting the screw in a measurement direction of the adaptive displacement sensor, and a magnetic force of the coil attached is adjustable to change the value of the gap, so that axes of the screw, working nut, and pre-tightening nut coincide.

公开(公告)号：US20240026959A1

公开(公告)日：2024-01-25

申请号：US18265557

申请日：2022-08-03

Applicant: NSK LTD.

Inventor： Yasumi WATANABE ,  Ryo SEGAWA ,  Tomoko MIYAMORI

IPC: F16H25/22 ,  F16H25/20

CPC classification number: F16H25/2204 ,  F16H25/2015 ,  F16H2025/204

Abstract: The nut has a first fitting surface provided with a first retaining ring groove on an end portion on the other side in the axial direction; the fitting cylinder, at an end portion on the one side in the axial direction, has a second fitting surface provided with a second retaining ring groove in a portion facing the first retaining ring groove with regard to a radial direction; and the retaining ring is engaged so as to span between the first retaining ring groove and the second retaining ring groove.

公开(公告)号：US20230332675A1

公开(公告)日：2023-10-19

申请号：US18337609

申请日：2023-06-20

Applicant: Cameron International Corporation

Inventor： Kyle Sommerfeld

IPC: F16H25/20

CPC classification number: F16H25/2015

Abstract: An actuator assembly includes a threaded shaft, a threaded nut that is threadably coupled to the threaded shaft, an annular ratchet positioned about the threaded shaft and comprising one or more tracks, and a pin that extends from the threaded shaft and into the one or more tracks. The threaded nut may include a first circumferentially-facing surface, the annular ratchet may include a second circumferentially-facing surface, and the first and second circumferentially-facing surfaces are configured to contact one another to enable the threaded nut to block rotation of the annular ratchet with the threaded shaft. The actuator assembly may enable the threaded nut to move to a limit position and hold full motor torque, but also to break free from the limit position with relatively low torque (e.g., less than the full motor torque; as compared to actuator systems that are devoid of certain features of the actuator assembly).

公开(公告)号：US20190234761A1

公开(公告)日：2019-08-01

申请号：US16316811

申请日：2017-08-10

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Jean-Francois Heyd ,  Wai-Wai Buchet

IPC: G01D5/12 ,  F16D23/12 ,  F16H25/20

CPC classification number: G01D5/12 ,  F16D23/12 ,  F16D2023/123 ,  F16D2300/18 ,  F16H25/2015 ,  F16H25/2252 ,  G01D5/145

Abstract: A sensor assembly for determining a number of rotations of a permanent magnet includes a first sensor. The permanent magnet has an axis of rotation, end surfaces lying in an X-Y plane, a central axis, and exactly two poles. The two poles are disposed in the X-Y plane on mutually opposite sides of the permanent magnet so that the permanent magnet is magnetized diametrically. The first sensor is axially fixed and rotationally displaceable relative to the permanent magnet. The first sensor is disposed at a first distance axially offset from the permanent magnet and at a second distance radially offset from the axis of rotation. The second distance is selected so that a vector sum of a radial flux density and a tangential flux density is not less than a first limit value and does not exceed a second limit value.

公开(公告)号：US20180355958A1

公开(公告)日：2018-12-13

申请号：US16001898

申请日：2018-06-06

Applicant: VIP Cinema LLC

Inventor： Kenneth R. Graham

IPC: F16H25/20 ,  H02K7/06 ,  F16H25/24

CPC classification number: F16H25/2015 ,  A47C1/02 ,  B60N2/067 ,  F16H25/2454 ,  F16H2025/2031 ,  F16H2025/2034 ,  F16H2025/2084 ,  F16H2025/209 ,  H02K7/06

Abstract: The present invention is directed to a linear actuator including an external adjustable variable limit switch. The linear actuator allows the position of the limit switch to be adjusted without disassembling the linear actuator or motor. In one embodiment, the linear actuator includes a profile tube having an upper end and a lower end, a slot that runs from the upper end to the lower end of the profile tube, and an internal track that runs from the upper end to the lower end of the profile tube. The linear actuator also includes at least one limit switch mounted on the slot and a limit switch adjuster and a locking fastener configured to permit the position of the limit switch to be adjusted without disassembly of the linear actuator or motor. The limit switch adjuster is further configured to be positioned in the internal track.

公开(公告)号：US20180266530A1

公开(公告)日：2018-09-20

申请号：US15921732

申请日：2018-03-15

Applicant: Don Alfano ,  Greg Nichols

Inventor： Don Alfano ,  Greg Nichols

IPC: F16H25/20 ,  F16H57/029 ,  H01R12/58 ,  H01R12/71 ,  H01R13/52 ,  H02K5/22 ,  H02K7/116 ,  H02K11/215

CPC classification number: F16H25/2015 ,  F16H57/029 ,  F16H2025/2031 ,  F16H2025/2081 ,  F16H2057/02034 ,  F16H2057/02086 ,  H01R12/58 ,  H01R12/716 ,  H01R13/5202 ,  H01R13/521 ,  H01R2201/10 ,  H02K5/225 ,  H02K7/116 ,  H02K11/215 ,  H02K2211/03

Abstract: An electro-mechanical linear actuator is provided and includes a housing. A motor is supported within the housing and includes an output shaft. A gear package includes a drive package. The gear package is configured to engage the motor such that rotation of the output shaft provides rotation of the gear package. A lead screw engages the gear package such that rotation of the gear package provides rotation of the lead screw. A nut assembly engages the lead screw such that rotation of the output shaft causes axial travel of the nut assembly. A drag link is coupled to the nut assembly such as to provide axial travel of the drag link. An electrical connector is formed as a single unitary body with the housing and is configured to receive an electrical connector in electrical communication with an external controller.

公开(公告)号：US20180245675A1

公开(公告)日：2018-08-30

申请号：US15756215

申请日：2016-08-24

Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG

Inventor： Markus DIETRICH ,  Laszlo MAN ,  Peter GREB

IPC: F16H25/20 ,  F15B7/08 ,  F16D23/12 ,  G01D5/14

CPC classification number: F16H25/2015 ,  F15B7/08 ,  F16D23/12 ,  F16D48/064 ,  F16D2023/123 ,  F16D2500/1024 ,  F16D2500/3021 ,  F16H2025/2078 ,  G01D5/145

Abstract: An angle-measuring device is provided for a rotationally-driven linear actuator, which can be implemented into a clutch actuator. A rotor element has an axis of rotation and rotates concentrically with a rotor of a rotary drive for an axially movable linear actuator element. A measurement magnet arrangement is fixed relative to the rotor element and has a polarization. The polarization is oriented in such a way that the magnetic field lines can change with a rotation of the rotor element so as to enable the angle to be precisely determined from at least one measurement position. At one location, a 360-degree sensor is provided for measuring angular positions based on the measurement magnet arrangement. At another location, a revolution-counting sensor is provided for counting a number of revolutions carried out based on the measurement magnet arrangement.