Patents by Inventor Matthew Bradfield

Matthew Bradfield 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).

  • Hydraulic valve for an internal combustion engine
    Patent number: 9366161
    Abstract: A hydraulic valve for use with a lockable cam phaser. The hydraulic valve is configured to limit the flow of pressure medium to both the advance and retard chambers, while allowing a locking pin of the cam phaser to drain. The hydraulic valve effectively limits flow during the self-centering operation of the can phaser. This is important for the system function, since it allows the phaser to select a side (i.e., the advance or retard chamber) to bleed off, reducing pressure on that side, which allows the cam phaser to move towards the mid-park (i.e., locking) position.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: June 14, 2016
    Assignee: Hilite Germany GMBH
    Inventors: James Anthony Morehead, Matthew Bradfield, Daniel Stanhope
  • Oscillating-motor camshaft adjuster having a hydraulic valve
    Patent number: 9341090
    Abstract: An oscillating-motor camshaft adjuster which provides that, through software, camshaft alternating torque is utilized only in conditions where the torque is adequate and/or it is important to reduce flow consumption. If there is two step lift and the camshaft alternating torque is not adequate in low lift, software can position the spool to utilize some camshaft alternating torque while also tanking oil to speed up the phasing.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: May 17, 2016
    Assignee: HILITE GERMANY GMBH
    Inventors: Bernd Last, Gordon Neudörfer, Udo Diederichs, Matthew Bradfield, Melissa Mei Koenig, Kenneth J. Parker
  • OSCILLATING-MOTOR CAMSHAFT ADJUSTER HAVING A HYDRAULIC VALVE
    Publication number: 20150218976
    Abstract: An oscillating-motor camshaft adjuster which provides that, through software, camshaft alternating torque is utilized only in conditions where the torque is adequate and/or it is important to reduce flow consumption. If there is two step lift and the camshaft alternating torque is not adequate in low lift, software can position the spool to utilize some camshaft alternating torque while also tanking oil to speed up the phasing.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 6, 2015
    Inventors: Bernd Last, Gordon Neudörfer, Udo Diederichs, Matthew Bradfield, Melissa Mei Koenig, Kenneth J. Parker
  • HYDRAULIC VALVE FOR AN INTERNAL COMBUSTION ENGINE
    Publication number: 20140224198
    Abstract: A hydraulic valve for use with a lockable cam phaser. The hydraulic valve is configured to limit the flow of pressure medium to both the advance and retard chambers, while allowing a locking pin of the cam phaser to drain. The hydraulic valve effectively limits flow during the self-centering operation of the can phaser. This is important for the system function, since it allows the phaser to select a side (i.e., the advance or retard chamber) to bleed off, reducing pressure on that side, which allows the cam phaser to move towards the mid-park (i.e., locking) position.
    Type: Application
    Filed: February 13, 2014
    Publication date: August 14, 2014
    Inventors: James Anthony Morehead, Matthew Bradfield, Daniel Stanhope