Patents by Inventor Zafiris Politis
Zafiris Politis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230208113Abstract: Some embodiments of the present disclosure are directed to a hybrid distribution unit that can distribute both power and data connections from a power and fiber cables (or from a hybrid cable containing both power and fiber) within a compact enclosure that helps reduce the overall footprint of the hybrid distribution unit mounted on a cellular tower. Some embodiments may also include circuit protection features, such as fuses or circuit breakers. Other embodiments may be described or claimed.Type: ApplicationFiled: December 28, 2021Publication date: June 29, 2023Applicant: RAYCAP IP ASSETS LTDInventors: Charis COLETTI, Elias FERMELIS, Zafiris POLITIS, Kostas BAKATSIAS
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Patent number: 9640986Abstract: A telecommunications system uses a breakout device to connect a primary power cable to different secondary power cables that connect to different remote radio units (RRUs). For example, the breakout device may include a power distribution terminal that connects ?48 VDC and return power lines in the primary power cable to different ?48 VDC and return power lines in the secondary power cables. In another example, the breakout device may connect a hybrid cable that includes both power lines and fiber optic lines. A surge protection system may be located in the breakout device to protect the RRUs and other electrical device from power surges. Alternatively, the surge protection system may be located in jumper power cables connected between the breakout device and the RRUs.Type: GrantFiled: October 23, 2013Date of Patent: May 2, 2017Assignee: RAYCAP INTELLECTUAL PROPERTY LTD.Inventors: Zafiris Politis, Fani Asimakopoulou, Kostas Bakatsias, Charis Coletti
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Patent number: 9229048Abstract: Devices include an impulse current generator that is configured to provide a direct impulse current (DIC) that includes a specified waveform to a test load during a test duration, a continuous power supply that is configured to provide a continuous power to the test load during the test duration, a trigger circuit that is configured to determine a trigger condition that corresponds to the DIC and to generate a trigger signal responsive to determining the trigger condition, and a current bypass circuit that is configured to receive the trigger signal generated by the trigger circuit and to conduct a majority portion of the DIC being conducted by the load responsive to the trigger signal.Type: GrantFiled: September 12, 2013Date of Patent: January 5, 2016Assignee: Raycap Intellectual Property Ltd.Inventors: Grigoris Kostakis, Evaggelia Giannelaki, Thomas Tsovilis, Zafiris Politis
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Patent number: 9231399Abstract: A circuit protection device includes an overvoltage monitor circuit that is operable to monitor a power supply circuit to detect an overvoltage condition on the power supply circuit and to change a state of an overvoltage output responsive to the overvoltage condition on the power supply circuit. A bi-directional switch is operable to interrupt or limit current flow though the power supply circuit responsive to the change in the state of the overvoltage output. A bi-directional voltage limiter is connected across output terminals of the circuit protection device and is operable to limit an overvoltage to a predefined voltage limit.Type: GrantFiled: August 27, 2012Date of Patent: January 5, 2016Assignee: Raycap Intellectual Property Ltd.Inventors: Grigoris Kostakis, Evaggelia Giannelaki, Thomas Tsovilis, Zafiris Politis, Konstantinos Samaras
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Publication number: 20150109710Abstract: A telecommunications system uses a breakout device to connect a primary power cable to different secondary power cables that connect to different remote radio units (RRUs). For example, the breakout device may include a power distribution terminal that connects ?48 VDC and return power lines in the primary power cable to different ?48 VDC and return power lines in the secondary power cables. In another example, the breakout device may connect a hybrid cable that includes both power lines and fiber optic lines. A surge protection system may be located in the breakout device to protect the RRUs and other electrical device from power surges. Alternatively, the surge protection system may be located in jumper power cables connected between the breakout device and the RRUs.Type: ApplicationFiled: October 23, 2013Publication date: April 23, 2015Applicant: Raycap Intellectual Property Ltd.Inventors: Zafiris Politis, Fani Asimakopoulou, Kostas Bakatsias, Charis Coletti
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Publication number: 20150061692Abstract: Devices include an impulse current generator that is configured to provide a direct impulse current (DIC) that includes a specified waveform to a test load during a test duration, a continuous power supply that is configured to provide a continuous power to the test load during the test duration, a trigger circuit that is configured to determine a trigger condition that corresponds to the DIC and to generate a trigger signal responsive to determining the trigger condition, and a current bypass circuit that is configured to receive the trigger signal generated by the trigger circuit and to conduct a majority portion of the DIC being conducted by the load responsive to the trigger signal.Type: ApplicationFiled: September 12, 2013Publication date: March 5, 2015Applicant: Raycap Intellectual Property Ltd.Inventors: Grigoris Kostakis, Evaggelia Giannelaki, Thomas Tsovilis, Zafiris Politis
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Patent number: 8743525Abstract: An overvoltage protection device includes first and second electrically conductive electrode members and a varistor member formed of a varistor material and electrically connected with each of the first and second electrode members. The overvoltage protection device has an integral fail-safe mechanism operative to electrically short circuit the first and second electrode members about the varistor member by fusing first and second metal surfaces in the overvoltage protection device to one another using an electric arc.Type: GrantFiled: July 18, 2012Date of Patent: June 3, 2014Assignee: Raycap Intellectual Property, LtdInventors: Fotis Xepapas, Evaggelia Giannelaki, Grigoris Kostakis, Zafiris Politis, Kostas Samaras
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Publication number: 20140055898Abstract: A circuit protection device includes an overvoltage monitor circuit that is operable to monitor a power supply circuit to detect an overvoltage condition on the power supply circuit and to change a state of an overvoltage output responsive to the overvoltage condition on the power supply circuit. A bi-directional switch is operable to interrupt or limit current flow though the power supply circuit responsive to the change in the state of the overvoltage output. A bi-directional voltage limiter is connected across output terminals of the circuit protection device and is operable to limit an overvoltage to a predefined voltage limit.Type: ApplicationFiled: August 27, 2012Publication date: February 27, 2014Applicant: Raycap CorporationInventors: Grigoris Kostakis, Evaggelia Giannelaki, Thomas Tsovilis, Zafiris Politis, Konstantinos Samaras
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Publication number: 20130335869Abstract: An overvoltage protection device includes first and second electrically conductive electrode members and a varistor member formed of a varistor material and electrically connected with each of the first and second electrode members. The overvoltage protection device has an integral fail-safe mechanism operative to electrically short circuit the first and second electrode members about the varistor member by fusing first and second metal surfaces in the overvoltage protection device to one another using an electric arc.Type: ApplicationFiled: July 18, 2012Publication date: December 19, 2013Inventors: Fotis Xepapas, Evaggelia Giannelaki, Grigoris Kostakis, Zafiris Politis, Kostas Samaras
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Patent number: 7433169Abstract: An overvoltage protection device includes first and second electrically conductive electrode members, a varistor member formed of a varistor material and electrically connected with each of the first and second electrode members, and an electrically conductive, meltable member. The meltable member is responsive to heat in the device to melt and form a current flow path between the first and second electrode members through the meltable member.Type: GrantFiled: December 15, 2005Date of Patent: October 7, 2008Assignee: Raycap CorporationInventors: Sherif I. Kamel, Zafiris Politis, Konstantinos Samaras
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Publication number: 20070139850Abstract: An overvoltage protection device includes first and second electrically conductive electrode members, a varistor member formed of a varistor material and electrically connected with each of the first and second electrode members, and an electrically conductive, meltable member. The meltable member is responsive to heat in the device to melt and form a current flow path between the first and second electrode members through the meltable member.Type: ApplicationFiled: December 15, 2005Publication date: June 21, 2007Inventors: Sherif Kamel, Zafiris Politis, Konstantinos Samaras