1
Robert P Anderson, William J Crawford: Status monitoring systems for cable television signal distribution networks. Alpha Technologies, Michael R Hughes & Schacht P S Schacht, October 5, 1999: US05961604 (142 worldwide citation)

A system and method for determining the status of and controlling network devices distributed throughout a communications network. Each network device is provided with a server/interface module containing a device specific application for that particular network device. The device specific applicati ...


2
Fereydoun Mekanik, Donald C Sorenson, Gregory Scott Zediker, Thomas S Osterman: Apparatus and methods for generating uninterruptible AC power signals. Alpha Technologies, Michael R Hughes Multer & Schacht P S Schacht, June 24, 1997: US05642002 (82 worldwide citation)

A broadband communications network having an uninterruptible power supply. The power supply has one input connection to AC line voltage and another input connected to a gas powered electrical generator. The power supply contains an uninterruptible power supply module having a controlled ferroresonan ...


3
Thomas S Osterman: Apparatus and methods for generating an AC power signal for cable TV distribution systems. Alpha Technologies, Hughes Multer & Schacht, April 25, 1995: US05410720 (57 worldwide citation)

A cable TV distribution system in which an AC power signal is generated according to the following steps: (a) generating an AC power signal having at least a positive half-cycle, where the positive half-cycle comprises a rising portion, a falling portion, and a central portion; and (b) limiting the ...


4
René Spée, Thanh Le, Seth W Jennings: Charge balancing systems and methods. Alpha Technologies, Michael R Schacht, Schacht Law Office, January 11, 2005: US06841971 (53 worldwide citation)

A system for equalizing the voltages across first and second batteries coupled in series at a common terminal comprising a capacitive storage element, first and second inductive storage elements, first and second switch circuits, and a control unit. The capacitive storage element is coupled to first ...


5
Frank Liu, Pu Han, Lam Vu: Multiple output uninterruptible alternating current power supplies for communications system. Alpha Technologies, Michael R Schacht, Hughes & Schacht P S, September 11, 2001: US06288916 (38 worldwide citation)

A UPS system for communications systems. The UPS system comprises an input stage that generates primary and standby AC power signals. The primary and standby AC power signals are passed through an isolation transformer and through an output rectifier to obtain an output DC power signal. A plurality ...


6
Frank Liu, Paul Humphreys, Thanh Le, Thomas H Sloane: Uninterruptible power supplies using fuel cells. Alpha Technologies, Michael R Schacht, Schacht Law Office, August 5, 2003: US06602627 (38 worldwide citation)

An uninterruptible power supply system comprising a source of a utility power signal, a source of hydrogen, a fuel cell stack, first and second input circuits, an output circuit, and a control circuit. The fuel cell stack converts the hydrogen into a fuel cell output signal. The first input circuit ...


7
Fereydoun Mekanik, Donald C Sorenson, Gregory S Zediker, Thomas S Osterman: Apparatus and methods for generating uninterruptible AC power signals. Alpha Technologies, Hughes Multer & Schacht P S, June 10, 1997: US05638244 (31 worldwide citation)

A broadband communications network having an uninterruptible power supply. The power supply has one input connected to AC line voltage and another input connected to a gas powered electrical generator. The power supply contains an uninterruptible power supply module having a controlled ferroresonant ...


8
Anthony R Thorne, Fredrick Kaiser, Russell A Skinner Sr: Electrical generator employing rotary engine. Alpha Technologies, Michael R Hughes & Schacht P S Schacht, January 11, 2000: US06014015 (30 worldwide citation)

A system for generating electrical power signals from a fluid fuel source. The system comprises an engine and a generator. The engine burns the fuel and is connected to the generator such that the generator generates a raw power signal. An output stage generates an output power signal from the raw p ...


9
Thomas S Osterman: Power multiplexer for broadband communications systems. Alpha Technologies, Michael R Hughes & Schacht P S Schacht, April 6, 1999: US05892431 (30 worldwide citation)

A system and method for providing a power signal to a local service portion of a communication system located in a densely populated area. A power multiplexer is provided having first, second, and third input connector assemblies, an output connector assembly, and a switching network. The output con ...


10
Fereydoun Mekanik: Inverter/charger circuit for uninterruptible power supplies. Alpha Technologies, Michael R Hughes Multer & Schacht P S Schacht, June 2, 1998: US05760495 (27 worldwide citation)

A power supply for generating an uninterruptible AC power signal. The power supply utilizes leakage inductance in its transformer to eliminate the need for an output inductor. In standby mode, the AC power signal is generated from a battery by a switching circuit. Certain components of the switching ...