Matches 51 - 100 out of 529 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
6657328 Rotor for electric motor and method of making the same  
A rotor for an electric motor includes a frame previously formed and fixed to a rotational shaft of the motor so as to be rotated with the rotational shaft, and a magnet molded from a molten...
6624553 Head suspension assembly for magnetic disk drives  
A microactuator ( 30 ) is provided for positioning a read/write head relative to a mounting region of a head suspension assembly of a magnetic disk drive. The microactuator ( 30 ) comprises a...
6624539 High power ultrasonic transducers  
A high power ultrasonic transducer is provided. In one embodiment, the transducer includes means for providing power in excess of three kilowatts. The transducer further includes an active element...
6623251 Spindle apparatus  
A rod body ( 30 ) is formed of magnetostrictive material and includes one end portion ( 30 a ) fixed, and a piston ( 35 ) is fixed to the other end portion ( 35 b ) of the rod body ( 30 ). The...
6544000 Magnetostrictive adjustment of propeller blade  
A magnetostrictive rod subject to a magnetic field generated by an electrical activating coil within a pocket of a propeller blade is held in abutment with the body of the blade to effect its...
6515382 Actuators and apparatus  
The present invention relates to actuators, linear motors and rotational motors based on magnetic-field-induced strains taking place in the actuator material. These strains are caused by the...
6489695 Efficiency maximized conversion of electrical to mechanical energy by magnetostrictive transduction  
The efficiency of converting electrical energy into a mechanical output is maximized by alternatively matching selection of power supply for the drive coil applying a magnetic field to transducer...
6483208 Linear motor  
In an electric linear motor, the stator coils are arranged in a line, and the field they produce advances along that line driving the translator along with it. None of the known linear motors can...
6411426 Apparatus, system, and method for active compensation of aberrations in an optical system  
Active compensation of aberrations in an optical system involves attaching first and second force bars to a mirror. The first force bar is bifurcated to form an opening near its longitudinal...
6410999 Magnetostrictive magnetically controlled sprag locking motor  
Actuator elements of a motor system are cyclically expanded magnetostrictively by energization of excitation coils to impart driving forces directly to a driven load through roller sprag means...
6362543 Magnetostrictive surface acoustic wave devices with transducers tuned for optimal magnetic anisotropy  
In accordance with the invention, magnetostrictive saw devices are provided with tunable transducer structures for enhanced performance. The transducers are in the form of patterned conductors...
6356165 Magnetostatic wave devices for high frequency signal processing  
Magnetostatic devices includes: input and output electrodes for including energy conversion pattern provided in a dielectric substrate; a multi-layer -magnetic substance structure placed at an...
6348846 Filter circuit including system for tuning resonant structures to change resonant frequencies thereof  
A structure (and method) for tuning a resonant structure, includes a resonant structure including either a predetermined material coating provided on either a bar or a cantilever, or a lightly...
6328566 ID system for ultrasonic dental inserts  
A color coding system and method for visually identifying and distinguishing ultrasonic dental tool inserts. The invention employs a color-coded removable cap that is used to secure a handgrip,...
6320479 Magnetostrictive surface acoustic wave devices having optimized transducers  
In accordance with the invention, magnetostrictive saw devices are provided with improved transducer structures for enhanced performance. In one improved device, the transducers are in the form of...
6307286 Super magnetostrictive actuator  
A super magnetostrictive actuator includes: a magnetic field generating unit, at least first and second super magnetostrictive members extensible in a longitudinal direction thereof due to action...
6300855 Hysteresis reduction in giant magnetostrictive materials  
A high power magnetostrictive transducer element comprising a material of the formula Tb x Dy y Ho z Fe 2 -w wherein 0.24≤x≤0.28, 0.52≤y≤0.56, 0.13≤z≤0.22, x+y+z=1, and 0≤w≤0.20...
6300692 Linear actuator with expansion device  
A linear actuator includes a threaded support with first and second collars threadedly engaged with the support. First and second plates are abuttable against the first and second collars,...
6294849 Magnetostrictive actuator with load compensating operational modification  
A magnetostrictive actuator has an active rod deformed under exposure to magnetic bias of a magnetic field that is modified in accordance with variable external input loading transferred through...
6249064 Magneto-striction microactuator  
Apparatus and method for providing microactuator positional control in a disc drive having a rotatable disc on which a plurality of tracks are defined and an actuator assembly which supports a head...
6246132 Magnetostrictive actuator  
A magnetostrictive actuator, comprising: a magnetostrictive member which elongates upon application of a magnetic field; a translating member mechanically coupled to the magnetostrictive member,...
6232850 Magnetostatic wave device with specified angles relating the transducer, magnetic thin film, and bias magnetic field  
A magnetostatic wave device includes a Gd 3 Ga 5 O 12 substrate off-angled from a {110} plane. A magnetic thin film including a crystal of garnet is formed on the Gd 3 Ga 5 O 12 substrate by...
6093984 Rotor for electric motor  
A rotor for an electric motor includes a frame made of a resin and having a cylindrical yoke mounting portion, a base covering one end side of the yoke mounting portion, and a shaft supporting...
6046657 Magnetostrictive surface acoustic wave device and microelectronic circuit including same  
An improved surface acoustic wave device includes a film of a magnetostrictive material disposed on a substrate and spaced apart input and output transducer elements disposed on the film. The input...
6040643 Linear actuator  
An "inch worm" type linear actuator in which high resolution is achieved by directly moving an actuator armature in small steps using thermal, piezoelectric, electromagnetic, or magnetostrictive...
6037682 Integrated multi-mode transducer and method  
An integrated multi-mode transducer for use with a member to control movement of the member. The transducer includes an active element adaptable to engage the member. The active element is...
5989202 Medical ultrasonic generator  
A medical ultrasonic generator having an ultrasonic radiator wound with coils connected to a high-frequency oscillator, when the radiator is provided with a sintered element consisting essentially...
5980251 Laminated magnetostrictive transducer  
A magnetostrictive transducer including a plurality of magnetostrictive laminates each having a first end and a second end. The first and second ends of the laminates include openings. The...
5982054 Magnetostrictive device  
To provide a multi-purpose type magnetostrictive device that may be used as an acceleration sensor or a vibration sensor capable of detecting forces acting in more than one direction and which may...
5973440 Structural component having means for actively varying its stiffness to control vibrations  
A structural component having a stiffness which can be actively varied to control vibrations, for example in a helicopter rotor, an aircraft wing or tail, or in a robotic manipulator. The component...
5969460 Electric machine with a braced overhang  
In an electric machine (10), in particular a generator or motor, which is accommodated in a machine housing (11) and comprises a stator winding which passes through a stator core (13) and which...
5934129 System to control the surface profile of the back-up rolls in four high rolling stands and relative back-up roll  
System to control the surface profile of the back-up rolls in four-high rolling stands (11) to produce flat products (14), the four-high rolling stand (11) comprising working rolls (12) and back-up...
5898243 Displacement device with a modular system of displacement units  
A displacement device with a first part (1) and a second part (3) which are mutually displaceable in a displacement direction. The first part (1) comprises a number of contact bodies (7) which are...
5880542 Light reaction mass actuator  
A very light, high force reaction-mass actuator using high energy density magnetostrictive material to accelerate a mass, producing a reaction force that can be used to oppose vibration forces. The...
5850109 Magnetostrictive actuator  
Drive elements whose physical volume is considerably smaller than piezoelectric actuators for comparable mechanical characteristics and actuation travels can be developed on the basis of the...
5828143 Magnetostrictive method and apparatus for propelling an object  
A magnetostrictive method and apparatus for propelling an object through a medium wherein one end of a magnetostrictive rod is firmly attached to a housing connected to the object and the other end...
5783883 Subcritical spoke for hub to rotor attachment  
The present invention is a energy storage apparatus. The energy storage apparatus includes a rotor and a stator and a hub rotatably positioned about a stationary axial shaft. The hub also includes...
5739600 Underwater magnetrostrictive vibration device  
Provided is an underwater magnetrostrictive vibration device with reduced signal attenuation and improved in efficiency and sound quality, which has been low due to external noise disturbance. The...
5739601 Magneto-mechanical converter  
The proposed magneto-mechanical converter comprises a magnet system (2) and a core (3) at least one part (34, 36) of which is made of a magneto-strictive material. The magnet system (2) comprises a...
5731881 Engraving method and apparatus using cooled magnetostrictive actuator  
An engraving head apparatus and method for engraving a gravure cylinder is shown. The engraving head apparatus includes a magnetostrictive actuator formed from a magnetostrictive material such as...
5705863 High speed magnetostrictive linear motor  
A linear actuator having a magnetostrictive rod is magnetically energized der analog logic control in operative relation to a pair of electrically disengaged one-way locking devices, one of which...
5703553 Magnetostrictive active strut  
A magnetostrictive active member configured to withstanding significant bending moments and having a prestress mechanism that is adjustable for maintaining optimal performance of an integral...
5701043 High resolution actuator  
A magnetostrictive material is used to reduce a displacement by a factor of about 1000 to achieve displacements with subnanometer resolution. The range of motion is about 100 μm. In one...
5694097 Force and/or motion generating arrangement  
A force and/or motion generating arrangement comprises a body (16) of magnetostrictive material and means (10, 17) for feeding a magnetic flux through said body. Said means (10, 17) comprise a pair...
5693154 Terbium-dysprosium-zinc and terbium-gadolinium-zinc magnetostrictive materials and devices  
Polycrystalline or single crystal magnetostrictive alloys of the formula Tb 1 -x Dy x Zn w (0<x≤0.7; 0.90≤w≤1.10) and Tb 1 -y Gd y Zn w (0<y≤0.4; 0.90≤w≤1.10) and...
5671064 Method and apparatus for engraving using a magnetostrictive actuator  
An engraving head apparatus and method for engraving a gravure cylinder. The engraving head apparatus including a magnetostrictive actuator formed from TERFENOL-D™ which elongatably drives a...
5602434 Pulse controlled motion conversion system for magnetostrictive motor  
Axial elongation of a magnetostrictive element during a power phase of option in a motor, effects conversion of axial force to a torque applied to a rotor through cam discs held in axial engagement...
5585772 Magnetostrictive superconducting actuator  
An actuator in which a magnetostrictor is subjected to magnetic fields produced by a superconducting coil, and the magnetostrictor and coil are maintained at temperatures below the magnetic...
5543670 Magnetostrictive actuator for optical alignment screws  
This invention relates to electromechanical actuators, and particularly to actuators utilizing magnetostrictive elements to rotate positioning shafts associated with optical elements.
5530312 Multi-cycle electric motor system  
The active elements of magnetostrictive and piezoelectric actuators undergo yclic elongation and contraction in out-of-phase relation to each other when energized by the same electric power supply...
Matches 51 - 100 out of 529 < 1 2 3 4 5 6 7 8 9 10 11 >