Class / Patent application number | Description | Number of patent applications / Date published |
310120140 | Motor having both linear and rotary movement | 27 |
20090212644 | COMBINATION DRIVE WITH A HYBRID RELUCTANCE MOTOR - The aim of the invention is to create a combined linear-rotary drive that has a compact, simple, and inexpensive design. Said aim is achieved by a combined drive comprising a linear driving device ( | 08-27-2009 |
20090251013 | Electric Motor for Rotation and Axial Movement - The invention relates to a combination drive with a short axial length and a high magnetic capacity. According to the invention, an electric motor comprises a rotational drive device with an outer rotor (AR), and a linear drive device with an outer rotor (AT) or an inner rotor with bearings in the active part. The outer rotor (AR,AT) can be mounted by means of hydrostatic bearings (L | 10-08-2009 |
20090295236 | Electric Machine Having A Rotary And A Linear Actuator - The invention relates to an electric machine which comprises a first machine part ( | 12-03-2009 |
20090309427 | PRIMARY PART FOR A LINEAR ELECTRIC MOTOR - The invention relates to a primary part ( | 12-17-2009 |
20100001592 | MAGNETIC ACTUATOR, MAGNETIC ACTUATOR OPERATING METHOD, AND CAPSULE ENDOSCOPE USING THE SAME - A magnetic actuator includes a housing; a first permanent magnet and a second permanent magnet placed in the housing and being relatively rotatable in a plane including a magnetization direction; a magnetic-field generating unit outside of the housing, the magnetic-field generating unit generating a magnetic field that relatively rotates the first permanent magnet and/or the second permanent magnet in a direction such that the first permanent magnet and the second permanent magnet generate a repulsive force against each other; and a first guiding portion provided in the housing to regulate a direction in which the first permanent magnet and the second permanent magnet relatively move by the generated repulsive force. | 01-07-2010 |
20100026103 | DRIVING OR POWER GENERATING MULTIPLE PHASE ELECTRIC MACHINE - The electric machine of the invention operates in a synchronous manner based on the principle of reluctance variation. It comprises the following combination: a fixed portion ( | 02-04-2010 |
20100060086 | DRIVING MECHANISM HAVING POSITION ENCODER FOR TWO-DIMENSIONAL POSITIONING - A driving mechanism comprises a fixed housing, a movable housing on which an object to be driven is mounted and a driving motor which is operative to drive the movable housing to move linearly as well as to rotate relative to the fixed housing. An inductance-type encoder determines both linear and rotary displacement of the movable housing relative to the fixed housing, whereby to provide closed-loop control of the position of the object in both linear and rotary directions. | 03-11-2010 |
20100201209 | SYSTEMS AND METHODS FOR AN IMPROVED LINEAR MOTOR - An improved linear motor is provided useful in conjunction with audio equipment for reduced distortion audio output at high voice coil displacements. The improved linear motor may include a yoke, a gap plate which forms an air gap with the yoke, magnets coupled to the yoke and the gap plate, a former, and a voice coil coupled to the former. The magnets generate a magnetic field across the air gap, which is relatively narrow. The former and coil fit in the air gap and may move in a vertical direction. The voice coil includes more than one segment, each having differing electrical resistance. The differing resistances cause the force on the voice coil to be uniform regardless of displacement of the voice coil vertically within the air gap. Resistance differences between the segments may be caused by differing the wire lengths making up each segment of the coil. Likewise, each segment may be made of differing material to vary resistance. | 08-12-2010 |
20110006617 | LINEAR DRIVE MODULE FOR A ROTARY/LINEAR DRIVE - The aim of the invention is to provide a cost-effective, easily regulated rotary-linear drive. Therefore, the invention provides for the rotary-linear drive to connect a rotary drive ( | 01-13-2011 |
20110074227 | ACCELERATION GENERATOR AND PSEUDO FORCE SENSE GENERATOR - An acceleration generator | 03-31-2011 |
20110181129 | LINEAR AND ROTARY ACTUATOR - Provided is a linear and rotary actuator capable of bearing moment and load from a movable body and downsizing its radial dimension. A spline shaft is held in housings to be movable linearly in the axial direction and rotatable about the axis. The spline shaft is connected to a mover shaft of a linear motor. The spline shaft is surrounded with a hollow rotor of a rotary motor. The rotor is connected to a spline nut which transmits rotation of the rotor to the spline shaft by rotating together with the rotor and allows linear movement of the spline shaft. The rotor of the rotary motor is rotated by a stator of the rotary motor. The spline nut, the stator of the rotary motor and a stator of the linear motor are arranged in this order from an end of the spline shaft and mover shaft along the axial direction. | 07-28-2011 |
20110254385 | DIRECT ACTING ROTATION ACTUATOR - A direct acting rotation actuator includes a motor unit, an output shaft, a detector unit, and a bearing portion. The motor unit includes a field magnet portion which includes a permanent magnet or a core tooth, a first armature winding which generates a rotation magnetic field in the rotation direction, and a second armature winding which generates a traveling magnetic field in the direct acting direction. The output shaft is attached to the field magnet portion of the motor unit. The detector unit includes a direct acting detector and a rotation detector respectively detecting a position in the direct acting direction and an angle in the rotation direction of the output shaft. The bearing portion includes a direct acting bearing and a rotation bearing respectively supporting the output shaft in the direct acting direction and the rotation direction. The motor unit is disposed on an anti-load side of the output shaft, and the detector unit is disposed on a load side of the output shaft. | 10-20-2011 |
20120001499 | ACTUATOR - An actuator according to an embodiment includes support mechanisms that are disposed in plural places of an output shaft in a longitudinal direction and support the output shaft in a linear direction and a rotation direction, a motor portion that is disposed in a longitudinal direction of the output shaft and drives the output shaft in the linear direction and the rotation direction, a first detecting portion that detects an angle of a rotation direction of the output shaft, and a second detecting portion that detects displacement of the direct direction of the output shaft. | 01-05-2012 |
20120038228 | LINEAR MOTOR WITH REDUCED FORCE RIPPLE - To further reduce force ripple of a linear motor, a primary part has a plurality of windings sequentially arranged in an axial direction and subdivided in the axial direction into groups having an identical number of windings. The sequence of the association of the windings with the phases of a multi-phase system is not repeated at least in a group of windings within the primary part as long as the winding sense of the corresponding windings in the group is maintained. | 02-16-2012 |
20120043832 | COMPACT LINEAR ACTUATOR WITH ROTARY MECHANISM - Methods and apparatus for a compact linear actuator having an improved rotary mechanism are disclosed herein. In one embodiment, the linear actuator comprises a spline bearing for guiding the shaft of the actuator as it is linearly actuated. A rotor positioned around the spline bearing rotatably engages the spline bearing when magnetically actuated by a surrounding stator. A rotational lock connected to the piston assembly may be used to prevent the piston assembly from rotating during operation. Optionally, a rotary scale may be attached to the spline bearing in order to indicate how far the shaft has rotated. Since the shaft does not bear the mass of the rotary mechanism, linear performance of the actuator is substantially improved. | 02-23-2012 |
20120119592 | ACTUATOR - An actuator is provided, which includes a main shaft having a first shaft portion for generating a magnetic field in a linear direction and a second shaft portion for generating a magnetic field in a rotational direction, and a coil wound around an outer peripheral surface of the main shaft. The actuator performs both a rotational driving function and a straight driving function via a single unit to improve the positional accuracy and provide spatial efficiency, thereby improving the merchantable quality of the actuator. | 05-17-2012 |
20130147285 | DRIVE DEVICE FOR ROTATIONAL AND LINEAR MOVEMENTS WITH DECOUPLED INERTIAS - A drive device includes a rotational drive device with a rotating stator and a rotating armature for displacing a shaft in a rotational movement and a linear drive device with a linear stator and a linear armature for displacing a shaft in a linear movement. The rotational drive device and the linear drive device are arranged axially one behind the other, with the rotating armature and the linear armature being connected to a respective shaft section. The shaft sections of the rotating armature and the linear armature are axially aligned and connected to each other in a rotationally fixed manner such that the shaft sections can move axially with respect to each other but they can only rotate together. | 06-13-2013 |
20130300218 | Electric Motor - A rotary and linear motion device includes a magnetic stator assembly, opposed electromagnetic actuators, and a linear-to-rotary converter (e.g., cam). Each electromagnetic actuator includes a coil that is configured to reciprocate relative to the magnetic stator assembly or to linearly translate in a common direction relative to the magnetic stator assembly. The electromagnetic actuators are coupled to the linear-to-rotary converter and upon reciprocation or linear translation, drive the linear-to-rotary converter in rotary or linear motion. The device may be located inside a wheel, which may be part of a vehicle. If part of a wheel of a vehicle, the device can be used to provide propulsion, steering, braking, and suspension for the vehicle. | 11-14-2013 |
20140028118 | FORCE-CONTROLLED ELECTRIC HAND - A force-controlled electric hand including: an electric motor; a rotary-linear motion conversion mechanism converting rotary motion from the electric motor to linear motion; a pair of finger bases including a movable finger base which moves linearly in parallel with a first axial line through the rotary-linear motion conversion mechanism by power from the electric motor; a pair of fingers fixed to the pair of finger bases to grip a target workpiece by linear motion of the movable finger base; and a force sensor provided at least at one of the pair of finger bases to detect gripping force of the pair of fingers. The force sensor has a pair of parallel beams extending in parallel with a second axial line vertical to the first axial line and detects the gripping force based on an amount of displacement of the parallel beams in a direction of the first axial line. | 01-30-2014 |
20140139050 | ROTARY LIFTING DEVICE - A rotary lifting device comprises an actuator shaft, a linear motor and a rotary motor for moving and rotating the actuator shaft about the longitudinal axis thereof. The rotary motor has a hollow rotor, through which the actuator shaft extends and which is kinematically coupled to the actuator shaft in terms of rotation. The linear motor has an armature coaxially arranged with respect to the actuator shaft and kinematically coupled to the actuator shaft at a first longitudinal end thereof. A step-down gear is arranged at a second longitudinal end of the actuator shaft and is capable of being moved in an axial direction relative to the rotary motor. The step-down gear is kinematically coupled to the actuator shaft at the drive side, both with respect to axial movement of the actuator shaft and with respect to rotating movement of the actuator shaft. | 05-22-2014 |
20140319934 | SHAFT ROTARY TYPE LINEAR MOTOR AND SHAFT ROTARY TYPE LINEAR MOTOR UNIT - The present invention provides a shaft rotary type linear motor that enables a movable element to rotate and linearly move by using a simple structure, and can therefore support compact, space-saving and lightweight designs. The shaft rotary type linear motor includes: a shaft; an outer cylinder; a hollow movable element having a plurality of permanent magnets within the outer cylinder; an armature surrounding the hollow movable element and having a plurality of coils; and a frame containing the armature. The shaft is supported by a rotatable and linearly movable linear guide. | 10-30-2014 |
20150048694 | COMPACT DIRECT-DRIVE ACTUATOR GENERATING A CONSTANT FORCE - The present disclosure relates to an electromagnetic actuator of the type producing a force due to the current that remains substantially constant over the entirety of its useful travel Y and that has a low force in the absence of current, including at least one stator structure, at least one electrical supply coil, and a moving member, the stator structure having, on the one hand, a central pole running perpendicular to the direction of the travel Y and having a width Y | 02-19-2015 |
20150084441 | LINEAR MOTOR UNIT - A linear motor unit includes at least one first linear motor in which an armature is disposed spaced from a shaft guide supporting section which is provided at a distal end of a frame, and a shaft guide is disposed on a proximal side of the shaft guide supporting section; and at least one second linear motor in which an armature is disposed in contact with the proximal side the shaft guide supporting section which is provided at the distal end of the frame, and the shaft guide is disposed on the distal side of the shaft guide supporting section, wherein the first linear motors and the second linear motors are alternatively arranged in a width direction of the frame with the respective shaft guides of the linear motors aligned with each other, the shaft guide is rotated by a rotary motor. | 03-26-2015 |
20150311756 | DEVICES AND METHODS FOR MAGNETIC FLUX RETURN OPTIMIZATION IN ELECTROMAGNETIC MACHINES - A rotor element configured for movement relative to a stator includes a backing member formed, at least in part, from a ferromagnetic material; a first magnetic pole having a first polarity; and a second magnetic pole having a second polarity, opposite the first polarity. The first magnetic pole and the second magnetic pole are coupled to a first surface of the backing member such that the second magnetic pole is disposed, relative to the first magnetic pole, at a distance defined in a direction of a width of the backing member. A thickness of the backing member is varied along the width of the backing member to form a plurality of alternating first portions and second portions. The first portions include protrusions extending from a second surface of the backing member, opposite the first surface, such that the first portions are thicker than the second portions. | 10-29-2015 |
20160087515 | LINEAR-ROTARY ACTUATOR - A linear-rotary actuator includes a rotor and a stator. The rotor includes an output shaft, and makes a linear motion in an axial direction of the output shaft and a rotary motion in a circumferential direction of the output shaft. The rotor includes permanent magnets and yokes alternating with each other in the axial direction. Each yoke includes protrusions that protrude toward an outer circumferential side of a radial direction of the output shaft and that are arranged in the circumferential direction. Each protrusion includes overhangs respectively extending toward first and second sides of the axial direction to overlap the permanent magnets in the radial direction. The stator includes a linear motion winding to generate a first magnetic field to cause the rotor to make the linear motion, and a rotary motion winding to generate a second magnetic field to cause the rotor to make the rotary motion. | 03-24-2016 |
20160087516 | LINEAR-ROTARY ACTUATOR - A linear-rotary actuator includes a rotor and a stator. The rotor includes an output shaft, and makes a linear motion in an axial direction and a rotary motion in a circumferential direction. The rotor includes N and S pole portions alternating with each other in the axial direction as seen in the circumferential direction and alternating with each other in the circumferential direction as seen in the axial direction. The stator includes a linear motion winding, a rotary motion winding, and protruding cores. The protruding cores protrude toward an inner circumferential side of a radial direction to be opposed to the rotor. The protruding cores are arranged in the axial direction and in the circumferential direction, and displaced in the axial direction to form a circumferential line skewed relative to a direction in which the rotor makes the rotary motion. | 03-24-2016 |
20160190904 | MOVEMENT GENERATING DEVICE - A movement generating device ( | 06-30-2016 |