Patents by Inventor Patrick A. Bloedel

Patrick A. Bloedel 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).

  • Refrigerant expansion valve having electrically operated inlet shutoff with improved armature dampening
    Patent number: 6530528
    Abstract: A combination refrigerant expansion valve adapted for operation by a thermally responsive element, and a solenoid actuated, preferably pilot operated inlet shutoff valve. The solenoid has a resilient elastomeric stop-ring for cushioning deceleration and limiting travel of the armature to prevent closing of the working air gap between the armature and a pole piece. The armature also has a cross port therethrough to alleviate flow-induced pressure decrease on the distal end of the armature from causing the armature to stick in the actuated position when the coil is de-energized.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: March 11, 2003
    Assignee: Parker-Hannifin Corporation
    Inventors: William L. Breyer, Patrick A. Bloedel
  • REFRIGERANT EXPANSION VALVE HAVING ELECTRICALLY OPERATED INLET SHUTOFF WITH IMPROVED ARMATURE DAMPENING
    Publication number: 20030019225
    Abstract: A combination refrigerant expansion valve adapted for operation by a thermally responsive element, and a solenoid actuated, preferably pilot operated inlet shutoff valve. The solenoid has a resilient elastomeric stop-ring for cushioning deceleration and limiting travel of the armature to prevent closing of the working air gap between the armature and a pole piece. The armature also has a cross port therethrough to alleviate flow-induced pressure decrease on the distal end of the armature from causing the armature to stick in the actuated position when the coil is de-energized.
    Type: Application
    Filed: July 27, 2001
    Publication date: January 30, 2003
    Applicant: EATON CORPORATION
    Inventors: William L. Breyer, Patrick A. Bloedel