U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Celebrity Inventors

Comic actor Danny Kaye received patent D166,807 for the co-design of "Blowout Toy or the Like". It's similar to one of those toys that unravels when you blow into at a birthday party except Kaye's has three blowouts going in different directions, not just one.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 323/260 - With motor in control circuit


Subclass of Class 323 - Electricity: power supply or regulation systems
Definition: Subject matter including a signal processing circuit between
No. of patents: 14
Last issue date: 01/29/2008


NumberTitleIssue Date
7323852Sensing load tap changer (LTC) conditions
A load tap changer (LTC) having a plurality of windings is coupled to one of the primary and secondary of a power transformer in order to regulate the output voltage of the transformer. The LTC includes a plurality of taps physically and electrically connected to an...
01/29/2008
7301310Excitation controlled synchronous permanent magnet machine
The present invention provides an apparatus and methods for providing constant voltage from a permanent magnet generator at varying prime mover speeds or under varying loads. A constant voltage permanent magnet generator includes a housing, a magnetized rotor, a pri...
11/27/2007
7280331Power reconnect and voltage control
In one aspect, a power connect device receives ac line voltage and provides ac load voltage to a load device. In one embodiment, the power connect device includes: a connect panel, a transformer circuit, a high voltage relay, a rectifier, and a voltage protection ci...
10/09/2007
7084590Booster and motor controller
A voltage sensor (101) is connected to output terminals (P, N) of a booster. The voltage sensor (101) detects a boosted voltage, and outputs the detected voltage to a first drive controller (102). The first drive controller (102) outputs ...
08/01/2006
6664771Power regulation of electrical loads to provide reduction in power consumption
A power regulation system is coupled to an AC power source outputting an input voltage. The system has a first transformer to receive the input voltage and generate a control voltage. The system also has a second transformer that has a primary coil and a ...
12/16/2003
6486641Power regulation of electrical loads to provide reduction in power consumption
A power regulation system is coupled to an AC power source outputting an input voltage. The system has a first transformer to receive the input voltage and generate a control voltage. The system also has a second transformer that has a primary coil and a ...
11/26/2002
5821716Method of controlling a tap changer of a transformer
A tap-changer transformer operated by the step-by-step principle in which its motor drive receives a signal to raise or lower the tap, has a voltage regulator in which the switching delay times and sensitivity values are freed matrix-like the respective t...
10/13/1998
5703447Battery voltage controller for DC motor
A driver for driving a loading motor of a single-unit video camera-recorder. In the driver, a DC voltage supplied from a battery is boosted by a DC/DC converter, and the boosted DC voltage is supplied to the loading motor through a switch unit in which th...
12/30/1997
4700257Superconductive AC current limiter
An AC current limiter for a power transport line including an overload circuit-breaker member (6), the limiter comprising a transformer having a primary winding (6A) connected in series between the power supply circuit (R) and the load circuit (U) and one...
10/13/1987
4672298Power factor correction system
A power-factor correction system for reactive power control and concomitant power factor correction adapted to cooperate with a line supplying power at a given line voltage from a power generator to an inductive load via a given path, includes a reactive ...
06/09/1987
4622513Gating of the thyristors in an arcless tap changing regulator
A voltage regulator using electronic control of two static switch circuits to permit tap changing without arcing at the switched electrical contacts, without interrupting the load current, and without inducing sizable circulating currents. As a mechanical...
11/11/1986
4554502Power factor correction system
A power factor correcting system for compensating a lagging power factor reactance for an electric load plurality fed from at least one pair of incoming service lines, comprising, in combination: capacitors for producing leading reactive power; a series t...
11/19/1985
4438387Turn-on control system for voltage drop compensators
A turn-on control system for series variable transformer type voltage drop compensators comprising a voltage corrective variable compensating winding in combination with a voltage sensing main control to sense the voltage deviations of the utility's incom...
03/20/1984
4413189Demand reduction system for regulated electric utility distribution circuits
A circuit for automatically introducing a component of negative resistance line drop compensation into the control circuitry of a conventional voltage regulator to reduce the regulated voltage level on and, consequently, the load current level in a single...
11/01/1983
 
Sign InRegister
Username  
Password   
forgot password?