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6580977 |
High efficiency fuel cell and battery for a hybrid powertrain
This invention provides a new method and system to control strategies of a combined fuel cell and battery pack power system to produce an efficient and cost-effective powertrain with acceptable...
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6121740 |
Control of regeneration energy from an electric motor
A method and apparatus are disclosed for controlling regenerative energy from an induction motor. The induction motor is connected to a battery, which is intended to capture the regenerative energy...
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6064161 |
Vehicle drive device and vehicle drive device control method
A motor/generator and drive wheel are connected to an engine, and the drive wheel is driven by the engine and motor/generator according to running conditions. A sensor which detects a slip of the...
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5606230 |
Direct current drive system
A Direct Current drive system with a multiplicity of applications including that of powering electric vehicles. The system contains a hybrid electric motor formed by a unique synchronous...
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5359308 |
Vehicle energy management system using superconducting magnetic energy storage
An energy management system for a hybrid internal combustion and electric vehicle provides a highly energy-efficient and yet highly agile hybrid vehicle. The vehicle includes an internal combustion...
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5189360 |
Method and apparatus for providing controlled mechanical braking torque
Apparatus and method for electrically generating mechanical braking torque employs direct field drive incorporating an AC alternator plus a current regulator. The stator windings of the alternator...
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5045765 |
Process and arrangement for ventilating the passenger compartment of a motor vehicle
A process and arrangement for the ventilation of the interior of a motor vehicle is provided, whereby the motor vehicle has a ventilating device and a roof having at least one roof opening which...
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4908553 |
Magnetic regenerative braking system
The present invention is a regenerative braking system useful in systems having variable kinetic energy such as vehicles. A DC machine having an independently energized field coil includes a rotor...
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4528488 |
Warning device using power tool residual kinetic energy
A warning and braking device for use on a power cutting tool such as a circular saw or a lawnmower comprises a generator, a drive shaft and a pulley connected by a lever to the power tool on/off...
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4132934 |
Electric motor driven vehicles
A control arrangement is described for dynamically braking a vehicle driven by an electric motor having a single field winding. The control arrangement comprises means for controlling the supply of...
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3997827 |
Shaded pole electric motor and brake
A shaded pole electric motor which utilizes shading coils on the shaded poles is operated to provide a braking action. The shading coils are normally operated to cause the motor to operate either...
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3974396 |
Electric generator arrangement
An electric generator arrangement has at least two wind or water wheels rotatably mounted on a common stationary shaft and coupled such that they rotate in opposite directions with a given ratio or...
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3906299 |
Apparatus for rapid braking of magnetic tape
An arrangement is provided for the rapid braking of magnetic tapes. The apparatus includes first and second motors adapted for driving and being interconnected through a magnetic tape, the motors...
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3899041 |
Electric vehicle
An electric vehicle having batteries for supplying power to DC series motors mounted to the wheels of the vehicle. A solid state Jones Chopper is employed for controlling the motors. During...
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3740635 |
OVERSPEED SENSOR FOR SAFETY BRAKE SYSTEM
A brake control system for elevating platforms comprising a timing relay connected to receive "Down" command signals, a meter relay connected to receive signals from a tachometer driven by the...
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3715643 |
ELECTRICALLY DRIVEN MOTOR
An electrically driven motor that can be rapidly rotated and stopped at a predetermined position about its own axis of rotation. To this end, the motor is provided with a rotational shaft rigidly...
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3713521 |
ROLLER PROVIDED WITH SPEED CONTROLLING MECHANISM FOR ARTICLES BEING CONVEYED ON A ROLLER CONVEYOR
A roller equipped with a speed controlling mechanism for use in a roller conveyor having a group of many free rollers in alignment between frames. The motion of an article being conveyed on the...
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3700990 |
BRAKING METHODS AND APPARATUS
Braking methods and the apparatus therefor are provided in accordance with the teachings of the present invention. According to one embodiment of this invention the rotation of a rotating device is...
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3665272 |
ARRANGEMENT FOR BRAKING A THREE-PHASE MOTOR DRIVEN HOIST
A braking system for a hoist driven by a polyphase drive motor includes a polyphase eddy current braking machine coupled to the hoist and which has a larger number of poles than the drive motor and...
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3601672 |
EDDY CURRENT BRAKING SYSTEM
An eddy current braking system for wound rotor induction motors, particularly those employed in hoisting and lowering loads, employs apparatus for sensing reflected load torque and speed and...
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3593085 |
SPEED AND POSITION CONTROL FOR ELECTRIC MOTOR
A precision speed and position control for an electric motor having a DC brake winding, comprising a transistor amplifier for energizing the brake winding and having a control potentiometer for...
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3571683 |
SERVOMECHANISM WITH DRIVING ROTOR WINDING AND BRAKING ROTOR WINDING
A commutator-type electric motor with two windings, one of which is energized by a control current, for driving the motor, and the other of which furnishes a braking torque, whereby the motor is...
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3530356 |
REGENERATIVE SYSTEM FOR ELECTRIC VEHICLE
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3487281 |
DETENTING SERVOMOTOR
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3367296 |
Driving and stopping mechanisms
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3345548 |
Electric hoist control system
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3334287 |
Anti-slip relay for hoist control
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3307065 |
Low noise electron gun with crossed electric and magnetic fields and auxiliary axial electric field
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3299308 |
Electron beam traverse of narrow aperture in barrier separating regions of differentpressure
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3293483 |
Radiation controlled electron radiation source
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3237054 |
Magnetic speed regulator
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3218536 |
System for regulating above-synchronous speed of an a.c. motor
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3110462 |
Control system for electric motors
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3039036 |
Control apparatus
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3029372 |
Stepless hoist control
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2985809 |
Electric hoist control
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2971144 |
Interrelated manual and autopilot servosystem
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2924766 |
Hoist load sensing device
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2874960 |
Electromagnetic door check
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2846631 |
Eddy-current brake for hoists and the like
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2823341 |
Electric motor-brake hoist control system
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2807767 |
Speed control of electric motors
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2796572 |
Electric motor regulator
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