Patents by Inventor John A. Cruden, Jr.

John A. Cruden, Jr. 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).

  • Proportional variable force solenoid control valve with armature damping
    Patent number: 6435472
    Abstract: Proportional variable force solenoid valve for controlling the pressure of a fluid in a fluid control system comprises a solenoid housing having therein a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil, and a biasing spring for biasing the armature in a direction to establish a valve fluid pressure response to solenoid coil current. An inner armature end cooperates with or engages a damping member residing in a fluid damping chamber to reduce non-linear valve responses resulting from pressure oscillations in the fluid control system.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: August 20, 2002
    Assignee: Saturn Electronics & Engineering, Inc.
    Inventors: Hamid Najmolhoda, David L. Seid, David A. Nezwek, John A. Cruden, Jr.
  • Proportional variable force solenoid control valve with armature damping
    Patent number: 6223761
    Abstract: Proportional variable force solenoid valve for controlling pressure of a fluid in a fluid control system comprises a solenoid housing having therein a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil, and a biasing spring for biasing the armature in a direction to establish a valve fluid pressure response to solenoid coil current. An inner armature end cooperates with or engages a damping member residing in a fluid damping chamber to reduce non-linear valve responses resulting from pressure oscillations in the fluid control system.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: May 1, 2001
    Assignee: Saturn Electronics & Engineering, Inc.
    Inventors: Hamid Najmolhoda, David L. Seid, David A. Nezwek, John A. Cruden, Jr.
  • Proportional variable force solenoid control valve with armature damping
    Patent number: 5984259
    Abstract: Proportional variable force solenoid valve for controlling the pressure of a fluid in a fluid control system comprises a solenoid housing having therein a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil, and a biasing spring for biasing the armature in a direction to establish a valve fluid pressure response to solenoid coil current. An inner armature end cooperates with or engages a damping member residing in a fluid damping chamber to reduce non-linear valve responses resulting from pressure oscillations in the fluid control system.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: November 16, 1999
    Assignee: Saturn Electronics & Engineering, Inc.
    Inventors: Hamid Najmolhoda, David L. Seid, David A. Nezwek, John A. Cruden, Jr.