| EPHAUGH, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110286140 | Method And System For Moving Material - A method and system for moving magnetic material includes an electromagnet wherein known problems associated with DC power circuit interruptions are substantially reduced. The system includes a generator coupled to an electromagnet, the generator being powered by a power supply through a first set of contactors which arc configured to open and close a first circuit between the power source and the generator coupled to the magnet to start and stop a lifting sequence, wherein the first circuit includes a first bridge rectifier, a reactance element, and a first resistance element. The system includes a second set of contactors configured to open and close a second circuit between the power source and the generator coupled to the magnet to start and stop a dropping sequence, wherein the second circuit includes a second bridge rectifier and at least one pair of contactors for discharging power from the generator, the at least one pair of contactors being configured to open and close a discharge circuit between at least the reactance element and the generator. | 11-24-2011 |
| 20100321851 | Method and Apparatus for Moving Material - A method and apparatus for moving magnetic material includes an electromagnet for lifting the magnetic material where upon its release, the residual magnetic flux of the lifted magnetic material is reduced. The apparatus includes a generator coupled to the electromagnet. The generator includes a control input and an armature having a voltage output. A controller has an output coupled to the generator's control input and armature voltage output, whereupon receiving a release material signal from an operator interface panel to release the magnetic material from the electromagnet, the controller transmits a plurality of control signals, one of which is at least partially dependent upon the duration of a previously transmitted control signal, to effectively alternate the polarity and reduce the magnitude of the magnetizing force of the electromagnet. | 12-23-2010 |
| 20100157489 | Method and Apparatus for Moving Material - An apparatus and method for providing ground fault protection to a lifting device utilizing an electromagnet and powered by a generator. The apparatus and method rectifies an AC voltage emanating from the generator source and monitors unsafe operating conditions of the generator's circuit wherein operation of the lifting device is ceased when predetermined electrical operating parameters are exceeded. | 06-24-2010 |
