Patents by Inventor Dafydd Roberts

Dafydd Roberts 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: 11306449
    Abstract: A spool-less system for deployment, recovery and manipulation of a traversable road covering track. The system includes an arcuate guide member detachably coupled to a retaining member; the guide member and retaining member defining a volume for receiving a roll of traversable road covering; the guide member arranged to contact the roll along a first arcuate range and the retaining member configured to contact the roll along a second arcuate range; and wherein the guide member and retaining member are detachably coupleable having, a first position in which, the guide member and retaining member are separated at a first diameter whereby the roll of traversable road covering may be deployed or recovered when the host machine is in motion, and a second position in which, the guide member and retaining member are separated at a second diameter in which the roll of traversable road covering is retained.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: April 19, 2022
    Assignee: FAUN TRACKWAY LIMITED
    Inventors: Neil Wigley, Paul Godridge, Dafydd Roberts
  • Publication number: 20210079602
    Abstract: A spool-less system for deployment, recovery and manipulation of a traversable road covering track is provided. The system includes an arcuate guide member detachably coupled to a retaining means; the guide member and retaining means defining a volume for receiving a roll of traversable road covering; the guide member arranged to contact the roll along a first arcuate range and the retaining means configured to contact the roll along a second arcuate range; and wherein the guide member and retaining means are detachably coupleable having, a first position in which, the guide member and retaining means are separated at a first diameter whereby the roll of traversable road covering may be deployed or recovered when the host machine is in motion, and a second position in which, the guide member and retaining means are separated at a second diameter in which the roll of traversable road covering is retained.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 18, 2021
    Inventors: Neil Wigley, Paul Godridge, Dafydd Roberts
  • Patent number: 10690074
    Abstract: A method of reducing cold startup time of a genset includes providing a lubricant to the genset at predetermined time intervals before a genset startup. The lubricant is heated to a predetermined lubricant temperature using an external heating system. A high temperature coolant of the genset is heated to greater than a predetermined high temperature coolant temperature. The speed of the engine is ramped to a target speed continuously without pausing at a speed lower than the target speed. Genset electrical parameters of the genset are synchronized to utility grid or load electrical parameters of the utility grid or load. The genset is electrically coupled to the utility grid or load such that the synchronizing and electrically coupling are performed within a predetermined synchronization time. A fueling rate and a spark timing is adjusted based on a power being produced by the genset.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: June 23, 2020
    Assignee: Cummins Power Generation Limited
    Inventors: Ikenna Oguguo, Philippe Goesel, Dafydd Roberts, Sean Curley, James Meadows
  • Publication number: 20180252176
    Abstract: A method of reducing cold startup time of a genset includes providing a lubricant to the genset at predetermined time intervals before a genset startup. The lubricant is heated to a predetermined lubricant temperature using an external heating system. A high temperature coolant of the genset is heated to greater than a predetermined high temperature coolant temperature. The speed of the engine is ramped to a target speed continuously without pausing at a speed lower than the target speed. Genset electrical parameters of the genset are synchronized to utility grid or load electrical parameters of the utility grid or load. The genset is electrically coupled to the utility grid or load such that the synchronizing and electrically coupling are performed within a predetermined synchronization time. A fueling rate and a spark timing is adjusted based on a power being produced by the genset.
    Type: Application
    Filed: September 19, 2016
    Publication date: September 6, 2018
    Applicant: Cummins Power Generation Limited
    Inventors: Ikenna Oguguo, Philippe Goesel, Dafydd Roberts, Sean Curley, James Meadows
  • Patent number: 5786649
    Abstract: A rotary electromagnetic actuator comprises a rotatable shaft carrying a rotor which is rotatable relative to a stator. A magnetic circuit is set up which comprises the stator and the rotor, the reluctance of the magnetic circuit being dependent on the relative rotational orientation of the rotor and stator and decreasing in a particular direction of rotation such that the reluctance is a minimum at an equilibrium position to which the rotor is therefore biased. The rotor is selectively impelled to advance away from the equilibrium position, subsequently again becoming part of a magnetic circuit, the reluctance of which decreases in the direction of rotation to a minimum at an equilibrium position to which the rotor becomes biased. The actuator provides undirectional rotation for successive actuations at substantially uniform torque and is suitable for use in actuating rotary devices such as rotary valves.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: July 28, 1998
    Inventor: Dafydd Roberts
  • Patent number: D900347
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: October 27, 2020
    Assignee: FAUN TRACKWAY LIMITED
    Inventor: Dafydd Roberts