Patents by Inventor Frederick J. Pilon

Frederick J. Pilon 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).

  • Dual restrictor shut-off valve
    Patent number: 7404538
    Abstract: A shut-off valve for pressurized fluids in an air cooling/heating apparatus having a first duct receiving a first restrictor and a second restrictor. Both restrictors are coaxially formed with a capillary through which the pressurized fluid passes and which causes the rapid expansion of the fluid when the fluid exits from a distal end of the capillary. The outer surface of the restrictors is in direct contact with the interior surface of the first duct. The valve can further include a sampling instrument located between the restrictors.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: July 29, 2008
    Assignee: Parker-Hannifin Corporation
    Inventors: Scott D. Gill, Justin C. Miller, Frederick J. Pilon
  • Dual restrictor flow control
    Patent number: 5265438
    Abstract: A fluid flow circuit intended for use with heat pumps having a flow control valve comprising a pair of restrictor assemblies positioned in opposed relationship. The first restrictor assembly provides for restricted flow in a first direction and unrestricted flow in the opposed and second direction. The second restrictor assembly provides for restricted flow in the second direction and unrestricted flow in the first and opposed direction.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: November 30, 1993
    Assignee: Aeroquip Corporation
    Inventors: Steven M. Knowles, Frederick J. Pilon
  • Flow control restrictor
    Patent number: 4896696
    Abstract: A restrictor for use in conduit systems, such as refrigeration and heat pump circuits for controlling the flow of fluid therein. The restrictor incorporates a unique shape to lower the operational noise normally generated by a restrictor without affecting the flow characteristics. Noise level is reduced by utilizing a specific configuration of the outer surfaces of the restrictor with respect to the direction of fluid flow.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: January 30, 1990
    Assignee: Aeroquip Corporation
    Inventors: Andrew H. Bradley, Steven M. Knowles, Frederick J. Pilon