Patents Assigned to Unitron, L.P.
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Patent number: 9236739Abstract: An apparatus provides electrical power to a ship in port. A first interface interconnects the apparatus with a power grid of the port receiving an input power signal. A second interface interconnects the apparatus with an electrical power grid of the ship to provide an output power signal. Power conversion circuitry receives the input power signal at a first voltage level and generates the output power signal at a selected voltage level and at a selected frequency level responsive to the input power signal. Power control circuitry configures the operation of the power conversion circuitry to generate the output power signal at the selected voltage level and the selected frequency level.Type: GrantFiled: March 28, 2012Date of Patent: January 12, 2016Assignee: Unitron, L.P.Inventors: Andrew Ford, John Spencer Dale, Dennis M. Braun
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Patent number: 8610308Abstract: A system for combining electrical power from two or more power sources includes first and second conversion stages (120) which receive input power from two or more power sources (110), and produce different output voltages, including DC outputs. The input power sources (110) may have different voltage, frequency, and phase characteristics, and may be DC voltages. Various embodiments are disclosed for converting and combining the input power sources (110) to provide at least a DC output voltage and an optional AC output voltage which may have different voltage, frequency, and phase characteristics than the input power sources (110). In another embodiment, a method of power conversion is disclosed.Type: GrantFiled: May 5, 2005Date of Patent: December 17, 2013Assignee: Unitron, L.P.Inventors: Jerry O. Shires, Raymond L. Beutel
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Publication number: 20130257143Abstract: An apparatus provides electrical power to a ship in port. A first interface interconnects the apparatus with a power grid of the port receiving an input power signal. A second interface interconnects the apparatus with an electrical power grid of the ship to provide an output power signal. Power conversion circuitry receives the input power signal at a first voltage level and generates the output power signal at a selected voltage level and at a selected frequency level responsive to the input power signal. Power control circuitry configures the operation of the power conversion circuitry to generate the output power signal at the selected voltage level and the selected frequency level.Type: ApplicationFiled: March 28, 2012Publication date: October 3, 2013Applicant: UNITRON, L.P.Inventors: ANDREW FORD, JOHN SPENCER DALE, DENNIS M. BRAUN
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Patent number: 8472152Abstract: An electrical receptacle includes at least one motion sensor for detecting movement of a blade of an electrical plug in the receptacle, an extraction detector operatively connected to the motion sensor for generating a signal in response to movement of the blade at a predetermined rate, a position detector operatively connected to the motion sensor for determining the position of the blade in the receptacle, a switch operatively connected to the extraction detector and the position detector for de-energizing the receptacle when the extraction detector detects extraction of the blade from the receptacle at a rate equal to or greater than the predetermined rate and wherein the extraction detector and switch are operative to de-energize the receptacle in less than six milliseconds when the extraction detector detects extraction of the blade from the receptacle at a rate equal to or greater than the predetermined rate.Type: GrantFiled: May 26, 2011Date of Patent: June 25, 2013Assignee: Unitron, L.P.Inventors: Andrew Ford, Jerry Shires
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Patent number: 7952840Abstract: An electrical receptacle includes at least one motion sensor for detecting movement of a blade of an electrical plug in the receptacle, an extraction detector operatively connected to the motion sensor for generating a signal in response to movement of the blade at a predetermined rate, a position detector operatively connected to the motion sensor for determining the position of the blade in the receptacle, a switch operatively connected to the extraction detector and the position detector for de-energizing the receptacle when the extraction detector detects extraction of the blade from the receptacle at a rate equal to or greater than the predetermined and wherein the extraction detector and switch are operative to de-energize the receptacle in less than six milliseconds when the extraction detector detects extraction of the blade from the receptacle at a rate equal to or greater than the predetermined rate.Type: GrantFiled: September 22, 2008Date of Patent: May 31, 2011Assignee: Unitron, L.P.Inventors: Andrew Ford, Jerry Shires
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Publication number: 20090284875Abstract: An electrical receptacle includes at least one motion sensor for detecting movement of a blade of an electrical plug in the receptacle, an extraction detector operatively connected to the motion sensor for generating a signal in response to movement of the blade at a predetermined rate, a position detector operatively connected to the motion sensor for determining the position of the blade in the receptacle, a switch operatively connected to the extraction detector and the position detector for de-energizing the receptacle when the extraction detector detects extraction of the blade from the receptacle at a rate equal to or greater than the predetermined and wherein the extraction detector and switch are operative to de-energize the receptacle in less than six milliseconds when the extraction detector detects extraction of the blade from the receptacle at a rate equal to or greater than the predetermined rate.Type: ApplicationFiled: September 22, 2008Publication date: November 19, 2009Applicant: UNITRON, L.P.Inventors: ANDREW FORD, JERRY SHIRES