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Maternity Beach Chair

A beach chair which can be adapted for a woman who is pregnant and wishes to sunbathe in the prone position.

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Class 318/141 - Automatic generator control and/or with time-delay means


Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for automatically
No. of applications: 6
Last issue date: 02/05/2009


Application No.Application TitleIssue Date
20090033255CHARGING ENERGY SOURCES WITH A RECTIFIER USING DOUBLE-ENDED INVERTER SYSTEM
Systems and methods are provided for charging energy sources with a rectifier using a double-ended inverter system. An apparatus is provided for an electric drive system for a vehicle. The electric drive system comprises an electric motor configured to provide traction ...
02/05/2009
20080179122ELECTRIC MOTOR CONTROL SYSTEM, SERIES HYBRID VEHICLE, ELECTRIC MOTOR CONTROL APPARATUS, AND ELECTRIC MOTOR CONTROL METHOD
An electric motor control system including a generator, an AC motor, a power converter for driving the AC motor using a DC output voltage of the generator, and an electric motor controller for controlling the power converter. The electric motor controller controls the p...
07/31/2008
20080007190Motor control apparatus and on-vehicle motor drive system
It is an object of the present invention to provide a motor control apparatus and on-vehicle motor drive system which can easily protect components of an inverter from overvoltage even if surplus power occurs in a generator in a system without a battery between a genera...
01/10/2008
20070241699Motor-generator control system
In a motor-generator control system for controlling a motor-generator, first and second sets of multiphase windings of a motor-generator are arranged to be spatially shifted in phase from each other. An allocating unit is configured to, upon input of workload request fo...
10/18/2007
20070210730Over-unity energy motor-generator
An over-unity motor-generator is provided. The over-unity motor-generator includes a motor circuit unit, a motor-generator unit for generating an electric energy by rotating by an electric energy, and a generator circuit unit for commutating an alternating current gener...
09/13/2007
20050134206Motor/generator transient response system
A transient response system includes a power source operable to generate a power output and a transmission operatively coupled to the power source. The transient response system also includes a generator operatively coupled to the power source and a controller in commun...
06/23/2005
 
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