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7593630 |
Built-in multidriver device for a camera zoom lens
The built-in multidriver device for a camera zoom lens has an independent driver for each lens of a zoom lens kit, and each driver is integrated into the lens mount. A housing positions each...
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7576454 |
Multiple magnet coil in gap generator
The present invention is an improved energy harvester or generator based on a yoked magnet array design based on a plurality of magnets arranged into at least two spaced apart linear or circular...
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7557474 |
Electromagnetic exciter
An electromagnetic exciter includes a first suspension having a cylindrical side wall portion coaxial with respect to a cylindrical wall of a yoke of a magnetic circuit assembly, and a spring...
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7554429 |
Electromagnetic actuator
A sealing member which seals a sealed space where a movable core of an electromagnetic actuator is arranged, includes: an inner ring portion and an outer ring portion which are respectively...
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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...
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7525203 |
Back-up electric power generator for electronic components attached to automatic firearms
A firearm improvement taking the form of a mechanical dynamo installed in an automatic firearm. Several components either replace certain parts of the firearm or are added to the firearm. In...
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7332846 |
Damping device
A damping device for damping speed irregularities of a rotating shaft includes an armature having at least one armature part made of a non-ferromagnetic, electrically conductive material. An...
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7255290 |
Very high speed rate shaping fuel injector
A very high speed injector permits injecting high pressure diesel oil directly into a diesel engine combustion chamber. The very high speed permits almost arbitrary rate shaping, minimizing...
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7202578 |
Electromagnetic drive device
An electromagnetic drive device comprises a drive part ( 10 ) arranged to be reciprocated in the stroke direction (H) and possessing a circular or oval cross section, said drive part having a...
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7150606 |
Electromagnetic fuel pump
An electromagnetic fuel pump, including a pump, an electronic control circuit board assembly (PCB) and electromagnetic coil operatively arranged to operate the pump, and, a housing arranged to...
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7078833 |
Force motor with increased proportional stroke
The force motor of the present invention controls the local magnetic field through a uniquely designed mechanical structure of the internal components. The mechanical structure divides the magnetic...
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6936937 |
Linear electric generator having an improved magnet and coil structure, and method of manufacture
Linear electric generators include stationary windings and armature magnets arranged to reciprocate axially relative to the windings, or stationary magnet structures and movable windings arranged...
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6921983 |
Electric generation device
A electric generation device and a method for using the same is provided. The electric generation device has a unique configuration that allows the device to generate electrical energy from the...
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6861772 |
Multiple magnet system with different magnet properties
A dynamic magnet system, particularly useful for electrical generation, employs multiple magnets in polar opposition to each other for individual movement relative to a support structure. The...
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6853100 |
Linear actuator and a pump apparatus and compressor apparatus using same
A linear actuator includes a first yoke part, a second yoke part opposing the first yoke part from a direction perpendicular to the axial direction thereof, an intermediate yoke part forming a...
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6849971 |
Drive devices for interrupter units in power supply and distribution switchgear
Drive devices for switchgear interrupter units, having movable contact pieces that can be controlled by solenoid drives are described. The drives of the movable contact pieces being controllable by...
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6812598 |
Multiple magnet transducer with differential magnetic strengths
A dynamic magnet system, particularly useful for electrical generation, employs multiple magnets in polar opposition to each other for individual movement relative to a support structure. The...
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6798090 |
Electrical power generation by coupled magnets
An electrical generator has a plurality of spaced magnets that move together relative to at least one coil to generate an electrical signal in the coils. Equal numbers of magnets and coils, with...
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6768230 |
Multiple magnet transducer
A dynamic magnet system, particularly useful for electrical generation, employs multiple magnets in polar opposition to each other and having a critical angle of displacement from a horizontal...
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6717297 |
Electrical machine
An electrical machine with at least a machine unit. This machine unit includes a stator, which includes a plurality of magnetic flux conductors, an electric conductor forming a winding extending in...
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6710476 |
Electromagnetic reciprocal drive mechanism
The invention provides an electromagnetic reciprocal drive mechanism having a movable part that is simple to manufacture, dimensionally stable and inexpensive. The device has; a permanent magnet...
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6700232 |
Solenoid valve having a clapper armature with yoke pins at the end, remote from the sealing element
A solenoid valve achieves high reliability and small size with fine tolerance. The solenoid valve having a valve housing, an electromagnet composed of a coil, a yoke and a clapper armature having...
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6628019 |
High efficiency pneumatically driven electric power generator
A pneumatically driven electric power generator includes a cylinder having one end connected to an air supply passage for receiving pressurized air and a piston having an associated magnetic...
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6441517 |
Drive mechanism for oscillating electric products of personal use, particularly dry shavers
The invention is directed to a drive mechanism for driving a working unit, movable in a rotary oscillating manner, of domestic appliances, particularly dry shavers. The drive mechanism of the...
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6365993 |
Round linear actuator utilizing flat permanent magnets
A linear actuator which includes a housing assembly, a shaft assembly disposed within the housing assembly, a plurality of flat magnets disposed within said housing about said shaft, and a...
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6307287 |
High-efficiency moving-magnet loudspeaker
A thermoacoustic driver incorporates a linear electrodynamic motor having electrical terminals and a moving part, a driver suspension housing, a piston, and a stiffness-enhancing device for raising...
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6274954 |
Electromagnetic actuator for actuating a gas-exchanging valve
The invention is based on an electromagnetic actuator for activating a gas exchange valve. The latter has both an opening magnet and a closing magnet, between which an armature which is connected...
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6246131 |
Magnetic power apparatus
A magnetic power apparatus includes an outer shell made of magnetically conductive metal, the outer shell having a through hole on one side wall thereof, an iron core axially movably disposed...
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6242823 |
Linear electric machine
The present invention relates generally to linear electric machines, capable of converting electrical current into mechanical work or mechanical work into electrical current. More specifically,...
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6188151 |
Magnet assembly with reciprocating core member and associated method of operation
An electromagnetic assembly includes a casing, a solenoid disposed inside the casing, a stationary magnetic core, and a movable magnetic core. The stationary magnetic core is disposed at least...
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6175168 |
Overmolded stator for fuel metering solenoid and method of manufacturing same
An encapsulated stator for use in solenoid-actuated liquid metering device has a bobbin assembly and a plunger guide which are substantially surrounded by a plastic overmold to hold the assembly...
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6060797 |
Solenoid operated remote resetting device with a protective activation circuit
A solenoid operated remote resetting device with a protective solenoid activation circuit is disclosed. The device includes a housing for enclosing and protecting a solenoid with a movable plunger,...
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6051897 |
Solenoid actuator with positional feedback
A solenoid is provided having a housing with a housing bore with a central axis. The housing bore opens at an opening in the housing at a first end. The solenoid further has an actuator extending...
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5994800 |
Precision clamping device with digitally programmable load
A linear actuator is used to push a spring-loaded ram The loading force of the spring against a stationary workpiece is calibrated with the displacement of the ram once the load exceeds the spring...
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5969443 |
Electromagnetic actuating device
An electromagnetic actuating device comprises a solenoid coil to which a control current can be applied and an armature associated with the solenoid coil which is adapted to carry out movements...
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5907201 |
Displacer assembly for Stirling cycle system
A displacer assembly for a Stirling cycle system includes a displacer and a synchronous linear electric motor linked so as to drive the displacer. The electric motor features at least one stator...
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5847474 |
Lorentz force actuator
A linear actuator powered by a Lorentz force. The force is generated by passing an electrical current through an armature spanning a space across a magnetic field established between two permanent...
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5828144 |
Electromagnetic actuator
An electromagnetic actuator includes a housing made of a magnetic material, a coil disposed in the housing, a stationary core surrounded by the coil and secured to the housing, a movable core...
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5693991 |
Synchronous twin reciprocating piston apparatus
A synchronous twin reciprocating piston apparatus includes a cylinder and a number of stator assemblies mounted in fixed relation thereto. The stator assemblies are constructed so as to generate a...
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5587615 |
Electromagnetic force generator
The electromagnetic force generator disclosed herein employs first and second elongate magnetic cores having transversely facing pole faces at each end, the cores being essentially parallel with...
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5525845 |
Fluid bearing with compliant linkage for centering reciprocating bodies
An improved mechanical transducer of the type having a body reciprocating in a chamber, the body being linked to a housing by a linkage including an axially compliant spring. An anti-friction fluid...
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5315190 |
Linear electrodynamic machine and method of using same
A linear electrodynamic machine includes mover and stator assemblies. The stator assembly includes an inner stator and an outer stator for defining a closed loop magnetic flux path. A magnet...
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5220223 |
Dynamoelectric machine
In an electric motor (11) with at least one winding (14) through which an electric current flows to produce a relative movement between a stator portion and a reaction portion, with at least one...
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5187398 |
Electromagnetic actuator
An electromagnetic actuator includes a magnetic flux conductive material case, an electrical current conductive coil, a magnetic flux conductive material core, and a pair of radially polarized...
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5124598 |
Intake/exhaust valve actuator
An intake/exhaust valve actuator includes a movable permanent magnet coupled to the shank end of an intake/exhaust valve, a first fixed electromagnet having a plurality of fixed magnetic poles...
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5075584 |
Electromagnetic solenoid valve with variable force motor
A solenoid valve which includes a valve body having a central bore from which fluid passages radially extend. A valve spool is axially slidably captured within the valve body bore to control...
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4999531 |
Electromagnetic actuators
An electromagnetic actuator has a tubular stator with at least two opposed, external pole pieces carrying energizing windings, and a permanent magnet rotor inside the stator and rotatable about the...
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4924956 |
Free-piston engine without compressor
A double-acting tandem free-piston engine comprising a housing including a cylinder having combustion chambers at opposite ends and one in its center with double-acting pistons displaceable between...
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4870306 |
Method and apparatus for precisely moving a motor armature
Electromagnetic actuators are disclosed for precisely and directly incrementing an output member along a given generally linear path. Included in one actuator is a pair of assemblies, one of which...
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4835426 |
Solenoid-operated valves
A solenoid-operated valve has its body formed from a plain length of pipe substantially free of any machining or shoulders. The armature and seating are inside, with the armature moving axially,...
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