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Patent No. 6260903

Portable automobile partition

A portable partition for use in an automobile having a seat with a seat bench and a seat backrest.

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Class 318/47 - Synchronous and nonsynchronous motors


Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which one or more of the motors is a synchronous
No. of patents: 14
Last issue date: 02/12/2008


NumberTitleIssue Date
7330011Motor driving apparatus
A motor driving apparatus includes an inverter circuit for converting an output of a rectifier circuit connected to a single-phase AC power supply into a driving voltage, and outputting the driving voltage to a brushless motor, and an inverter control unit for contr...
02/12/2008
7298111Method and device for controlling a production unit
A method and a device for controlling a production unit in a production installation are specified, controlling referring to the controlling and monitoring of speeds of rotation or angles of rotation of individual drives (20-22) such that the movements...
11/20/2007
6969969Circuit arrangement for the actuation of an electric-motor drive, in particular a pump drive, in a large domestic appliance
A large domestic appliance has main and auxiliary drives (17, 24) thereof supplied from the same dc voltage intermediate circuit (19) which is provided only once, by way of change-over switch sets (12), by half-bridge circuits (21, 21′)...
11/29/2005
6943523Brushless motor control system
For self-switching control of a brushless motor (10) powered by means of a predetermined electrical cycle in order to cause the rotor to advance, the control system comprises an indicator device (100) for indicating the mechanical position of the rotor...
09/13/2005
6933704Slip-inducing rotation starting exciter for turbine generator
A dynamoelectric machine combining the functions of an exciter, a turning motor, and a starting motor for a turbine. The machine operates in a first mode where the slip between a first stator winding and a first armature winding is positive and thus the magnetic fie...
08/23/2005
6891342Drive apparatus for PWM control of two inductive loads with reduced generation of electrical noise
A drive apparatus for driving two motors by PWM control of respective switching elements connected to the motors, whereby respective control signals are applied to the switching elements such that each commencement of a transition of one of the switching elements fr...
05/10/2005
6809484Multiple electronically commutated motor control apparatus and method
A cooling system includes multiple cooling fans, each driven by a corresponding fan motor controller. Each fan motor controller includes electronic commutation circuitry that is responsive to a modulated signal to control the speed of the associated motor and fan. T...
10/26/2004
6791294Servo control system
There is provided a serial transmitting section for serially transmitting a command frame 100 which is sent from a host controller 1 to a positioning type servo amplifier 30 and a command follow-up type servo amplifier 50. In the command ...
09/14/2004
6020657Power supply for providing instantaneous energy during utility power outages
A power supply system and method provides for smooth transitions between a utility power, transitory instantaneous power, and backup power in the event of a utility power failure of a utility supplying power to a load. As the utility power weakens due to ...
02/01/2000
5420485Uncoordinated machine initialization system and method
A system and method for initializing a plurality of mechanical elements of a machine includes a plurality of housings and an uncoordinated motion controller. The housings are coupled to the mechanical elements and include at least a motor controller elect...
05/30/1995
5365153AC variable speed driving apparatus and electric vehicle using the same
An AC variable speed driving apparatus including an AC motor and an inverter for driving the motor. The AC motor includes a synchronous motor and an induction motor. The synchronous motor includes first stator windings and a first rotor having a permanent...
11/15/1994
5166582Drive arrangement of an open-end spinning machine
Drive arrangement for spinning stations of an OE spinning machine. The feed rollers of the spinning stations can be driven by an electric motor and the draw-off rollers by another electric motor. At least one of these two motors is a synchronous motor. Ea...
11/24/1992
4398562Motorized diverter valve
A motor driven diverter valve is provided which diverts fluid flow from a single inlet port to either one of two outlet ports, or vice versa. The valve finds general, although not exclusive, utility in solar heating systems for swimming pools, in which th...
08/16/1983
4058755Kramer system utilizing a commutatorless motor
A speed control system for an induction motor controlled by a converting arrangement coupled with a commutatorless motor which operates without commutation failure notwithstanding wide variations in the speed of the commutatorless motor. The speed control...
11/15/1977
 
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