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13,573 items
patent · · added 2 months ago
A variable speed wind turbine generator system to convert mechanical power into electrical power or energy and to recover the electrical power or energy in the form of three phase...
patent · · added 2 months ago
A bias magnet unit has a permanent magnet that applies a bias magnetic field to an optical spot on a magneto-optical disk. A driving coil rotates the magnet in order to change a po...
patent · · added 2 months ago
By inserting a male screw for fixing a ratchet claw into a nut placed on an insert core and the like to prevent rotation, it is possible to eliminate additional screw processing on...
patent · · added 2 months ago
A wind turbine assembly includes a gear drive assembly having an outer tubular member and an inner tubular member, the inner member being positioned coaxially within the outer memb...
patent · · added 2 months ago
A sealing system for an essentially vertical shaft includes an active sealing element disposed between a first structural part rotating with the shaft and a second structural part...
patent · · added 2 months ago
An electrical generator has a plurality of C-shaped stator members which are made of magnetically permeable material. Each C-shaped stator member includes a respective stator windi...
patent · · added 2 months ago
An improved rotary valve indicator apparatus (10) and method is disclosed that includes an electronics switch housing (15), filled with epoxy or other generally elastomeric materia...
patent · · added 2 months ago
A bicycle lighting system comprising a dynamo generator, integrated rechargeable batteries and an integrated electronic circuitry, the bicycle being an exemplary embodiment of peda...
patent · · added 2 months ago
A wind turbine blade with governor for maintaining optimum rotational speeds comprising, in combination: a main body portion with a linear leading edge and a trailing edge, a trail...
patent · · added 2 months ago
The present invention prevents the degradation of the power generating efficiency of an alternating current generator by preventing the expansion of an air gap formed between pole...
patent · · added 2 months ago
The proposed device is intended for use in motor vehicles and permits a high level of accuracy in measurement and simple and cost-effective manufacture. It comprises a shaft compon...
patent · · added 2 months ago
The present invention prevents the degradation of the power generating efficiency of an alternating current generator by preventing the expansion of an air gap formed between pole...
patent · · added 2 months ago
The present invention prevents the degradation of the power generating efficiency of an alternating current generator by preventing the expansion of an air gap formed between pole...
patent · · added 2 months ago
A rotor (10) includes a plurality of permanent magnets (14) disposed around a shaft (12) at generally equal intervals, and a plurality of laminated core members (16) disposed betwe...
patent · · added 2 months ago
A rotor (10) includes a plurality of permanent magnets (14) disposed around a shaft (12) at generally equal intervals, and a plurality of laminated core members (16) disposed betwe...
patent · · added 2 months ago
A method of sealing a high performance internal combustion engine with a head gasket having a fire ring comprising providing a groove in the head or block generally concentric with...
patent · · added 2 months ago
A dynamoelectric machine rotor comprising a plurality of substantially trapezoidal prism-shaped permanent magnets mounted on a magnetic yoke. Each of the magnets has magnetic pole...
patent · · added 2 months ago
A method of sealing a high performance internal combustion engine with a head gasket having a fire ring comprising providing a groove in the head or block generally concentric with...
patent · · added 2 months ago
An electromechanical transducer, such as a motor (1), comprising a rotor member (4), a stator member (3) having an electrical winding (8), and isolating means (11, 9, 16, 12) isola...
patent · · added 2 months ago
Blade pitch of variable pitch blades is changed by an actuator having first and second ac machines. The first ac machine is excited with ac power to apply a motoring torque to a co...
patent · · added 2 months ago
A rotor of a synchronous motor incorporates a rotor core assembly 14 including a rotor core 10 formed by a lamination of ferrosilicone plates and a plurality of permanent magnets 1...
patent · · added 2 months ago
An electromagnetic motor includes a rotor having a plurality of magnets mounted along a perimeter of the rotor. Preferably, adjacent magnets have opposite poles facing outward. One...
patent · · added 2 months ago
A tandem type alternator comprises a rotor rotatably supported inside a housing and having rotor cores having magnetic poles formed on outer peripheral portions of the rotor cores,...
patent · · added 2 months ago
A wind turbine for mounting on an existing industrial chimney (1), tower or the like, includes two vertically aligned blades (3) mounted on rotor arms (2) for rotation about the lo...
patent · · added 2 months ago
A machine for converting wind energy into electrical energy comprising in combination a housing; propellers at the forward and rearward ends of the housing mounted on shafts for ro...
patent · · added 2 months ago
A motor having flux-concentrating permanent magnets, the motor including a stator with windings and a rotor including a shaft, a sleeve surrounding the shaft for holding rotor lami...
patent · · added 2 months ago
Wind turbine for generating electrical energy by means of wind energy, comprising a turbine rotor which can be mounted on a mast and is rotatable about a rotor shaft with one or mo...
patent · · added 2 months ago
Magnetically rigid materials are utilized to enhance the field magnitudes oduced by permanent magnet structures that are utilized in electric machinery. Magnetic circuit losses due...
patent · · added 2 months ago
The problem of preloading a rotor assembly (14) in a dynamoelectric machine (10) of the permanent magnet type is solved by providing a hub (20) having a plurality of outwardly open...
patent · · added 2 months ago
Method and apparatus for controlling the output frequency of an alternator by maintaining a relatively constant speed of rotation of the alternator rotor are disclosed. The rotor i...
