Patents by Inventor Douglas P. Arduini

Douglas P. Arduini 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).

  • Patent number: 11910554
    Abstract: Implementations are described for a modular power distribution unit (PDU) for a rack-mountable power tray or power shelf. The modular PDU includes a housing defining an input face and an opposing output face, and a plurality of power cables extending to the input face. The modular PDU further includes one or more second power connectors arranged at the output face, and distribution circuitry configured to distribute power from a first power bus and a second power bus to the one or more second power connectors. The modular PDU further includes one or more fasteners configured to attach the output face of the housing to the face of the power tray or power shelf, wherein the one or more second power connectors are retained in a coupled configuration with the one or more first power connectors.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: February 20, 2024
    Assignee: Cisco Technology, Inc.
    Inventors: Douglas P. Arduini, Sung K. Baek
  • Patent number: 11629696
    Abstract: A flywheel is attached to a shaft of a turbine. As the shaft rotates, the flywheel swings outwards away from the shaft and regulates the angular velocity of the rotating shaft. In an embodiment, there are multiple flywheels attached to the shaft. In another embodiment there is a first flywheel that controls a second flywheel. In another embodiment, the flywheel has adjustable or centrifugal displacement of counterbalanced masses for effective rotational diameter with effective rotational balance. In another embodiment, a small pilot centrifugal displacement flywheel may control a clutch by rotational velocity and may include a hysteresis control. An example of a clutch may limit that degree to which the arms of the flywheel may be extended and/or retracted. In another embodiment, a small pilot centrifugal displacement flywheel controls the hysteresis of a centrifugal flywheel displacement.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: April 18, 2023
    Inventor: Douglas P. Arduini
  • Patent number: 11522442
    Abstract: Embodiments herein describe control circuitry for operating a PFC converter in an AC-DC power supply under light loading conditions. The embodiments herein improve the power factor by identifying an optimized phase offset (?) between an AC reference voltage and an AC reference current used to control the PFC converter. In one embodiment, the control circuitry iteratively changes the phase offset between the reference voltage and current and measures its impact on the power factor. The control circuitry then selects the phase offset that results in the best power factor to use when operating the PFC converter under light loading conditions.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: December 6, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Ruqi Li, Sung K. Baek, Douglas P. Arduini, Xiqun Zhu
  • Publication number: 20220271513
    Abstract: Implementations are described for a modular power distribution unit (PDU) for a rack-mountable power tray or power shelf. The modular PDU includes a housing defining an input face and an opposing output face, and a plurality of power cables extending to the input face. The modular PDU further includes one or more second power connectors arranged at the output face, and distribution circuitry configured to distribute power from a first power bus and a second power bus to the one or more second power connectors. The modular PDU further includes one or more fasteners configured to attach the output face of the housing to the face of the power tray or power shelf, wherein the one or more second power connectors are retained in a coupled configuration with the one or more first power connectors.
    Type: Application
    Filed: September 27, 2021
    Publication date: August 25, 2022
    Inventors: Douglas P. ARDUINI, Sung K. BAEK
  • Patent number: 10404097
    Abstract: A power supply system may comprise a plurality of input buses and an output bus. A plurality of multi-input power supplies may be disposed between the plurality of input buses and the output bus. The plurality of multi-input power supplies may be configured to supply a predetermined amount of power to the output bus before and after a failure event. The failure event may comprise at least one of the following: a failure of a one of the plurality of multi-input power supplies and loss of power on one of the plurality of input buses. Each input to the power supply may include an independent power section to support near or full output power in the event of another input power loss. Any input line loss from an independent power bus/grid may provide line redundancy to the power supply and to the power system as an Uninterruptable Power Supply.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: September 3, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Douglas P. Arduini, Sung Kee Baek, Richard Anthony O'Brien, John Beecroft, M. Baris Dogruoz
  • Publication number: 20190211802
    Abstract: A flywheel is attached to a shaft of a turbine. As the shaft rotates, the flywheel swings outwards away from the shaft and regulates the angular velocity of the rotating shaft. In an embodiment, there are multiple flywheels attached to the shaft. In another embodiment there is a first flywheel that controls a second flywheel. In another embodiment, the flywheel has adjustable or centrifugal displacement of counterbalanced masses for effective rotational diameter with effective rotational balance. In another embodiment, a small pilot centrifugal displacement flywheel may control a clutch by rotational velocity and may include a hysteresis control. An example of a clutch may limit that degree to which the arms of the flywheel may be extended and/or retracted. In another embodiment, a small pilot centrifugal displacement flywheel controls the hysteresis of a centrifugal flywheel displacement.
    Type: Application
    Filed: March 14, 2019
    Publication date: July 11, 2019
    Inventor: Douglas P. Arduini
  • Patent number: 10247262
    Abstract: A flywheel is attached to a shaft of a turbine. As the shaft rotates, the flywheel swings outwards away from the shaft and regulates the angular velocity of the rotating shaft. In an embodiment, there are multiple flywheels attached to the shaft. In another embodiment there is a first flywheel that controls a second flywheel. In another embodiment, the flywheel has adjustable or centrifugal displacement of counterbalanced masses for effective rotational diameter with effective rotational balance. In another embodiment, a small pilot centrifugal displacement flywheel may control a clutch by rotational velocity and may include a hysteresis control. An example of a clutch may limit that degree to which the arms of the flywheel may be extended and/or retracted. In another embodiment, a small pilot centrifugal displacement flywheel controls the hysteresis of a centrifugal flywheel displacement.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: April 2, 2019
    Inventor: Douglas P. Arduini
  • Publication number: 20170201122
    Abstract: A power supply system may comprise a plurality of input buses and an output bus. A plurality of multi-input power supplies may be disposed between the plurality of input buses and the output bus. The plurality of multi-input power supplies may be configured to supply a predetermined amount of power to the output bus before and after a failure event. The failure event may comprise at least one of the following: a failure of a one of the plurality of multi-input power supplies and loss of power on one of the plurality of input buses. Each input to the power supply may include an independent power section to support near or full output power in the event of another input power loss. Any input line loss from an independent power bus/grid may provide line redundancy to the power supply and to the power system as an Uninterruptable Power Supply.
    Type: Application
    Filed: January 6, 2017
    Publication date: July 13, 2017
    Applicant: Cisco Technology, Inc.
    Inventors: Douglas P. Arduini, Sung Kee Baek, Richard Anthony O'Brien, John Beecroft, M. Baris Dogruoz
  • Patent number: 8985583
    Abstract: Typically, games are created for entertainment purposes involving trivia information or games are created for educational purposes focused on particularized subjects. Currently, there exists a need for a game that challenges players with questions from a broad range of topics useful for everyday life that are non-trivia.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: March 24, 2015
    Inventor: Douglas P. Arduini
  • Patent number: 8522466
    Abstract: In an embodiment, a low-force, low-friction, short-travel, low-energy control rolling trigger utilizes a rolling element as a trigger-release mechanism in equipment, machines and tools such as for clutches, brakes, actuators, and projectile launchers. The rolling elements within the trigger mechanism reduce the friction, which in-turn reduces the force necessary to discharge trigger. In an embodiment, the trigger is part of a firearm and uses a mechanical trigger. In another embodiment, the trigger is activated by an electronic signal that activates a solenoid, which pulls the rolling element, and thereby releases the striker or in a trigger-release assembly.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: September 3, 2013
    Inventor: Douglas P. Arduini
  • Publication number: 20120248700
    Abstract: Typically, games are created for entertainment purposes involving trivia information or games are created for educational purposes focused on particularized subjects. Currently, there exists a need for a game that challenges players with questions from a broad range of topics useful for everyday life that are non-trivia.
    Type: Application
    Filed: June 11, 2012
    Publication date: October 4, 2012
    Inventor: Douglas P. Arduini
  • Publication number: 20120131832
    Abstract: In an embodiment, a low-force, low-friction, short-travel, low-energy control rolling trigger utilizes a rolling element as a trigger-release mechanism in equipment, machines and tools such as for clutches, brakes, actuators, and projectile launchers. The rolling elements within the trigger mechanism reduce the friction, which in-turn reduces the force necessary to discharge trigger. In an embodiment, the trigger is part of a firearm and uses a mechanical trigger. In another embodiment, the trigger is activated by an electronic signal that activates a solenoid, which pulls the rolling element, and thereby releases the striker or in a trigger-release assembly.
    Type: Application
    Filed: July 20, 2011
    Publication date: May 31, 2012
    Inventor: Douglas P. Arduini
  • Publication number: 20120049454
    Abstract: Typically, games are created for entertainment purposes involving trivia information or games are created for educational purposes focused on particularized subjects. Currently, there exists a need for a game that challenges players with questions from a broad range of topics useful for everyday life that are non-trivia.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Inventor: Douglas P. Arduini
  • Patent number: 7843077
    Abstract: A system capable of converting fluid energy into electrical energy in conditions of low fluid flow is provided. In an embodiment, the system may engage and disengage an energy converter via an automatic clutch. In an embodiment, the transmission of energy to an energy converter is controlled by switching the energy converter on and off. In another embodiment, the flow of electrical energy to an electrical load is controlled by a switching device. In another embodiment, a funnel is used for condensing the flow of fluid moving through the system.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: November 30, 2010
    Inventor: Douglas P. Arduini
  • Publication number: 20100135767
    Abstract: A flywheel is attached to a shaft of a turbine. As the shaft rotates, the flywheel swings outwards away from the shaft and regulates the angular velocity of the rotating shaft. In an embodiment, there are multiple flywheels attached to the shaft. In another embodiment there is a first flywheel that controls a second flywheel. In another embodiment, the flywheel has adjustable or centrifugal displacement of counterbalanced masses for effective rotational diameter with effective rotational balance. In another embodiment, a small pilot centrifugal displacement flywheel may control a clutch by rotational velocity and may include a hysteresis control. An example of a clutch may limit that degree to which the arms of the flywheel may be extended and/or retracted. In another embodiment, a small pilot centrifugal displacement flywheel controls the hysteresis of a centrifugal flywheel displacement.
    Type: Application
    Filed: February 8, 2010
    Publication date: June 3, 2010
    Inventor: Douglas P. Arduini
  • Publication number: 20080284168
    Abstract: A system capable of converting fluid energy into electrical energy in conditions of low fluid flow is provided. In an embodiment, the system may engage and disengage an energy converter via an automatic clutch. In an embodiment, the transmission of energy to an energy converter is controlled by switching the energy converter on and off. In another embodiment, the flow of electrical energy to an electrical load is controlled by a switching device. In another embodiment, a funnel is used for condensing the flow of fluid moving through the system.
    Type: Application
    Filed: March 27, 2008
    Publication date: November 20, 2008
    Inventor: Douglas P. Arduini
  • Patent number: 6938637
    Abstract: A gas meter installation including gas supply plumbing and point of use plumbing will have a gas meter therebetween. A valve can be installed with the gas meter for shutting off the flow of gas to the point of use. This valve is preferably a gate valve mounted with the a gas meter, and can be retrofitted into existing installations, or installed with the new plumbing installation. The valve can be shut off by remote activation for example due to a seismic sensor causing a controller to send a signal to activate the valve. The control can also interact with electricity shut off apparatus, automatic meter reading apparatus and point of use security systems.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: September 6, 2005
    Inventors: James C. McGill, Douglas P. Arduini
  • Publication number: 20040149334
    Abstract: A gas meter installation including gas supply plumbing and point of use plumbing will have a gas meter therebetween. A valve can be installed with the gas meter for shutting off the flow of gas to the point of use. This valve is preferably a gate valve mounted with the a gas meter, and can be retrofitted into existing installations, or installed with the new plumbing installation. The valve can be shut off by remote activation for example due to a seismic sensor causing a controller to send a signal to activate the valve. The control can also interact with electricity shut off apparatus, automatic meter reading apparatus and point of use security systems.
    Type: Application
    Filed: December 9, 2003
    Publication date: August 5, 2004
    Inventors: James C. McGill, Douglas P. Arduini
  • Patent number: 6705340
    Abstract: A gas meter installation including gas supply plumbing and point of use plumbing will have a gas meter therebetween. A valve can be installed with the gas meter for shutting off the flow of gas to the point of use. This valve is preferably a gate valve mounted with the a gas meter, and can be retrofitted into existing installations, or installed with the new plumbing installation. The valve can be shut off by remote activation for example due to a seismic sensor causing a controller to send a signal to activate the valve. The control can also interact with electricity shut off apparatus, automatic meter reading apparatus and point of use security systems.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: March 16, 2004
    Inventors: James C. McGill, Douglas P. Arduini
  • Patent number: 6085772
    Abstract: A seismic safety valve has a housing with a fluid inlet, a fluid outlet and a fluid passageway interconnecting the inlet and outlet. A recess is formed inside the housing along the fluid passageway, with a valve seat located adjacent to and below the recess. A valve member, made of a magnetic material, is in the fluid passageway and movable between a first position in the recess and a second position on the valve seat. The valve member closes the fluid passageway in the second position and opens the fluid passageway in the first position. The recess supports the valve member so that the valve member is movable from the recess upon the housing being subjected to a predetermined amount of seismic activity under forces generated by the predetermined amount of seismic activity and gravity. At least one electromagnet is on the housing outside of the fluid passageway.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: July 11, 2000
    Inventors: James C. McGill, Douglas P. Arduini