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7602268 Operation input device and electronic equipment employing the same  
An operation input device includes a base, a printed circuit board which has a plurality of pushbutton switches and Hall elements mounted on its upside and which is stacked on and united with the...
7554225 Electric motor with a coil arrangement for providing oscillatory linear and rotational movement  
An electric motor for a small-scale electrical appliance, such as a toothbrush or shaver. The electric motor includes at least one oscillatory motor component, a magnet arrangement having at least...
7513703 Magnetic actuator and light quantity adjusting device  
A magnetic actuator according to the present invention includes a stator yoke made of a magnetic substance and having projecting streaks on the inner circumference thereof to produce magnetic bias...
7511391 Electromagnetic actuator  
An electromagnetic actuator has a rotor and a stator around which coils are wound to face portions of an outer surface of the rotor. The stator is C-shaped, the rotor is arranged so that a rotation...
7453341 System and method for utilizing magnetic energy  
The present invention is a system and method for utilizing magnetic energy. The basic principles of the present invention may be implemented in a variety of systems and methods. A magnet may be...
RE40503 Hybrid rotary actuator  
A rotary actuator ( 16 ) includes a rotor ( 48 ) which is disposed in a housing ( 34 ) between first and second pole pieces ( 42 and 44 ) of a stator ( 40 ). The rotor ( 48 ) is rotatable...
7408433 Electromagnetically actuated bistable magnetic latching pin lock  
A pin lock is movably mounted for linear movement along a longitudinal axis. A magnet, preferably a permanent magnet, is mounted for limited rotation between the pin extended and pin retracted...
6933818 Torque motors  
A torque motor may include a rotor having at least two magnets disposed thereon, and a stator having a core and at least one coil. The magnets are arranged and constructed so that the outer...
6926454 Electromagnetic driving unit and light quantity regulating apparatus using the same  
An electromagnetic driving unit includes a rotor having a central shaft and formed of a permanent magnet with a hollow cylindrical shape; an inner yoke disposed on an inner circumferential side of...
6840223 Armature and armature driving device  
This invention is an armature and an armature driving device in which the armature is rotated around its axis so as to inhibit uneven wear from occurring between the armature and a housing. That...
6750748 Limited angle unidirectional torque motor  
A torque motor comprising a rotor assembly and a stator assembly, the rotor assembly including a permanent rotor magnet being diametrically oriented, and the stator assembly including a pair of...
6507257 Permanent magnet brushless torque latching actuator  
A bi-directional latching actuator is comprised of an output shaft with one or more rotors fixedly mounted thereon. The shaft and rotor are mounted for rotation in a magnetically conductive housing...
6472967 Actuator using a magnetic circuit to produce a counterforce  
An actuator for rotating (or moving) a rotor (or a moving member) according to the current flowing through an electromagnetic coil. Magnetic energy of magnetomotive force induced in the...
6336373 Rotary electromagnetic actuator  
A drivig rotary shaft and a follower rotary shaft are rotatably carried in a housing of a rotary solenoid. Operating members fixed to the rotary shafts by clips are operatively connected to each...
6124774 Electromagnetic control motor device, particularly a ratio meter  
The present invention relates to an electromagnetically controlled drive device, in particular a ratio meter, the device being of the type comprising: a set of control coils (10, 20); a frame (50)...
6078236 Rotary solenoid  
A rotary solenoid is disclosed which comprises a support member, a U-shaped core secured to the support member such that a limb of the core extends through an opening provided in the support...
6020804 Electromagnetic actuator magnetically locked into two or more stable positions  
An electromagnetic actuator has four positions which are stable in the absence of a current and moves rapidly between these positions when acted upon by a current. The actuator has a thin,...
6006794 Device to block weft yarn during cutting on a weft feeder  
Device to block weft yarn associated with a measuring weft feeder for fluid jet looms. The device is located downstream of the outlet yarn guide and/or of the antiballoon device of the feeder, and...
5926664 Core made of a soft magnetic material for use in an electromagnetic actuator  
An electromagnetic actuator includes a core made of a soft magnetic material, a permanent magnet located between a pair of ends of the core, the permanent magnet being supported for movement, and...
5708406 Rotary actuator  
An improved rotary actuator having a reduced height is disclosed. The actuator has a stator core having excitable poles and yokes, a rotor with a rotor magnet, a bobbin frame having a rotor...
5703555 Rotary actuator  
A rotary actuator includes a pole riser that acts as a mechanical stop and provides advantageous magnetic latching features, which overcome the problems typically associated with the end of travel...
5699031 Electromagnetic actuator with rotary core  
Electromagnetic actuator with rotary core, comprising, housed in a casing: a magnetic yoke, a pair of fixed adjacent coils alternately energized, and a rotating element with a magnetic core; the...
5682129 Electrical actuator  
An electrical actuator comprises a first actuator body (1) and a second actuator body (3). The first actuator body comprises two diametrically opposed magnetic poles (N) and (S). The second...
5677659 Limited angular deflecting type rotary electromagnetic actuator  
An electromagnetic actuator rotatable about an axis including a stator magnet circuit (2) with an inner pole (9) having a central core (11), a first pole shoe (12) forming the continuation of the...
5605129 Electrically controlled actuator apparatus and method  
An electrically controlled actuator includes a rotor detachably mounted on a rotating shaft, and a stator disposed around the rotor. A fluid flow plate is mounted on the rotating shaft and...
5592136 Electromagnet apparatus and apparatus for adjusting exposure of camera using the same  
The present invention relates to an electromagnet apparatus having a coil wound around a bobbin, a core fixed to and supported by the bobbin to cover at least a portion of the surface of the coil...
5512871 Rotatable single-phase electromagnetic actuator  
A constant-torque single-phase electromagnetic actuator including a stationary device including a first magnetic stator circuit made of a high-permeability material and excited by at least one...
5398013 Actuator for rotating a rotary member  
The invention is directed to an actuator which is mounted on a base to rotate a rotary member about a rotational axis thereof. The actuator includes a first magnetic rotary member which is...
5394131 Magnetic drive with a permanent-magnet armature  
The invention concerns a bistable magnetic drive with an assembled armature 3, 4 consisting of a high-grade, disk-shaped permanent magnet 3 with two appropriately shaped pole pieces 4,4' and...
5293144 Electric rotary actuator  
An electric rotary actuator, particularly for controlling a throttle cross-section in a line conducting operating fluid of an internal combustion engine has a housing, motor actuating unit...
5243241 Totally magnetic fine tracking miniature galvanometer actuator  
A fine tracking miniature galvanometer actuator is used as a fine tracking positioner for a read/write head in the optical disk drive of an information storage and/or retrieval system. An efficient...
5239961 Rotary idle-speed actuator  
A rotary idle-speed actuator for controlling a throttle cross-section in a line carrying combustion air for an internal combustion engine has an actuating motor with a stator and a rotor. The rotor...
5136194 Single-phased compact linear electromagnetic actuator  
A compact electromagnetic actuator having at least one stable position in the absence of current and an area of constant torque or force under a constant current. The actuator includes a movable...
5083744 Motor-operated valve  
The invention contemplates a rotary valve which uses a brushless DC-motor to directly drive the flow control member of the valve. The motor is of toroidal-torque variety, with a wound stator that...
5059934 Cross-coil rotary magnet device  
In a cross-coil rotary magnet device, a rotor (32) which is mounted rotatably together with a shaft (35) is formed of a permanent magnet (33) with diametrically opposite permanent magnet poles and...
5038064 Limited angle rotary actuator  
A limited angle torque actuator produces a substantially constant torque over an excursion angle of 90 degrees or more. The actuator uses a core made from a highly permeable magnetic material such...
5028900 Damper for a rotary solenoid  
To reduce noise, impact forces and bouncing, the shaft of a rotary solenoid is provided with a dampening mechanism which generally includes a resilient dampening element and a cooperating collar...
5003239 Peristaltic pump monitoring device  
An encoder wheel (60) is provided for monitoring a peristaltic pump (20). The encoder wheel (60) provides a plurality of equispaced sectors (62) and a reference sector (66) provided at the outer...
4992685 Reciprocating motor-compressor with W-shaped core  
A motor-compressor unit comprising a vibration motor (1) having a single-part magnetizable stator (2) in the form of a W, arcuate air gaps (9, 10) being formed between the peripheral surface (6) of...
4959629 High torque rotary solenoid  
A high torque rotary solenoid is disclosed employing attracting and repelling forces of permanent magnets to induce rotary motion is disclosed. Four arrays of magnets are located on a stator and...
4945330 Actuator  
An actuator is disclosed, in which an movable armature and a permanent magnet mounted on a stationary yoke are disposed to face each other with a small gap. The armature has at least one pair of...
4899073 3-position rotational actuator  
The present invention relates to a 3-position rotational actuator which obtains three stable points by two pairs of field poles, in which the magnetic flux to a rotor due to one pair of field poles...
4880999 Solenoid  
A solenoid has a coil with an outer core and an inner core. The cores provide the magnetic circuit around the coil. The inner core includes a rotor which has radially extending armatures. The...
4864264 Bistable toggling indicator  
In the disclosed device, a pair of magnets supported in the ends of a C-shaped yoke bias an armature into one of the two rotary positions. A short pulse to a coil about the center of the yoke...
4838954 Pressure regulator  
A pressure regulator continuously actuates the relative axial position and the tangential position of an armature relative to a valve body into the desired position so as to deliver a fluid at a...
4816707 Limited angle torque motor with wide rotation poles  
Limited angle torque motor includes a rotor assembly having one or more permanent magnets which are magnetized in the diametrical direction and a stator assembly including a pair of...
4816795 Directional control device for a movable toy  
A directional control device for use in a movable toy such as a radio control car, which has a cylindrical magnet, a magnetic yoke disposed rotatably within the magnet and having an electromagnetic...
4806837 Rotary encoder  
Disclosed is here a rotary encoder having a recording medium including positional information arranged in a circumferential direction, sensors disposed opposing the positional information, and a...
4804934 Adjustment member for performing a mechanical rotational movement  
An electromagnetic adjustment device for performing mechanical rotational movements has two electromagnetically excitable pole pieces arranged opposite each other to form an opening partially...
4795929 Rotary actuator  
A rotary actuator in which there is a freely rotatable permanent magnetic armature between two stators. At least one of the stators produces an asymmetrical magnetic flux field that acts upon the...
Matches 1 - 50 out of 218 1 2 3 4 5 >