Patents by Inventor Donald E. Williamson

Donald E. Williamson 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: 10641540
    Abstract: An anti-condensing system includes a control panel configured to electrically couple between a power source and a temperature regulating display unit. The control panel includes a housing defining an interior cavity, a door selectively repositionable to facilitate accessing the interior cavity of the housing, and a circuitry assembly disposed within the interior cavity. The circuitry assembly includes a relay configured to couple to a heating element of the temperature regulating display unit, an overcurrent protection breaker coupled to the relay and directly integrated into the control panel such that the overcurrent protection device can be locked out at the control panel, and a control circuit coupled to the relay. The control circuit is configured to actively control the relay to prevent condensation from forming on the temperature regulating display unit.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: May 5, 2020
    Assignee: Hill Phoenix, Inc.
    Inventor: Donald E. Williamson
  • Patent number: 10421656
    Abstract: A fuel dispensing system includes a plurality of fuel dispensers, at least one tank configured to store fuel, at least one pump configured to pump the fuel from the tank to at least one of the fuel dispensers, and a fuel panel assembly configured to supply electric power to each of the fuel dispensers. The fuel panel assembly includes a plurality of overcurrent protection breakers, each overcurrent protection breaker provided for one of the fuel dispensers. The fuel panel assembly further includes a plurality of disconnect devices, each disconnect device provided for one of the fuel dispensers. The fuel panel assembly is provided within a single control panel enclosure.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: September 24, 2019
    Assignee: Hill Phoenix, Inc.
    Inventor: Donald E. Williamson
  • Publication number: 20190120537
    Abstract: An anti-condensing system includes a control panel configured to electrically couple between a power source and a temperature regulating display unit. The control panel includes a housing defining an interior cavity, a door selectively repositionable to facilitate accessing the interior cavity of the housing, and a circuitry assembly disposed within the interior cavity. The circuitry assembly includes a relay configured to couple to a heating element of the temperature regulating display unit, an overcurrent protection breaker coupled to the relay and directly integrated into the control panel such that the overcurrent protection device can be locked out at the control panel, and a control circuit coupled to the relay. The control circuit is configured to actively control the relay to prevent condensation from forming on the temperature regulating display unit.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 25, 2019
    Applicant: Hill Phoenix, Inc.
    Inventor: Donald E. Williamson
  • Publication number: 20190031495
    Abstract: A fuel dispensing system includes a plurality of fuel dispensers, at least one tank configured to store fuel, at least one pump configured to pump the fuel from the tank to at least one of the fuel dispensers, and a fuel panel assembly configured to supply electric power to each of the fuel dispensers. The fuel panel assembly includes a plurality of overcurrent protection breakers, each overcurrent protection breaker provided for one of the fuel dispensers. The fuel panel assembly further includes a plurality of disconnect devices, each disconnect device provided for one of the fuel dispensers. The fuel panel assembly is provided within a single control panel enclosure.
    Type: Application
    Filed: July 25, 2017
    Publication date: January 31, 2019
    Applicant: Hill Phoenix, Inc.
    Inventor: Donald E. Williamson
  • Patent number: 6820640
    Abstract: A pressure control apparatus for use in a bed including a pressurized air source, an inflatable air sack, and an independently inflatable cell located adjacent the inflatable air sack. A controller is operable to regulate the pressure in the air sack and to independently alternately pressurize and vent the inflatable cell at a selected frequency.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: November 23, 2004
    Assignee: Hill-Rom Services, Inc.
    Inventors: Barry D. Hand, Robert C. Novack, Donald E. Williamson, James R. Stolpmann, Kenith W. Chambers
  • Publication number: 20020195144
    Abstract: A pressure control apparatus for use in a bed including a pressurized air source, an inflatable air sack, and an independently inflatable cell located adjacent the inflatable air sack. A controller is operable to regulate the pressure in the air sack and to independently alternately pressurize and vent the inflatable cell at a selected frequency.
    Type: Application
    Filed: July 8, 2002
    Publication date: December 26, 2002
    Inventors: Barry D. Hand, Robert C. Novack, Donald E. Williamson, James R. Stolpmann, Kenith W. Chambers
  • Patent number: 6415814
    Abstract: A pressure control apparatus includes a valve inlet configured to receive pressurized air from the pressurized air source, a valve stem coupled to the valve inlet and configured to engage the port of the manifold to form an airtight connection with the manifold and receive the pressurized air from the pressurized air source via the manifold, a valve outlet configured to permit exit of said pressurized air to the at least one air sack, a valve in fluid communication between said valve inlet and said valve outlet and configured to regulate flow of said pressurized air between said valve inlet and said valve outlet, and a controller coupled to said valve and configured to control said valve to regulate flow of said pressurized air through said valve.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: July 9, 2002
    Assignee: Hill-Rom Services, Inc.
    Inventors: Barry D. Hand, Robert C. Novack, Donald E. Williamson, James R. Stolpmann, Kenith W. Chambers
  • Patent number: 6098222
    Abstract: The present invention relates to a vibratory patient support system for providing therapeutic vibrational action or forces to a patient suffering from a respiratory ailment. The vibratory patient support system includes a rigid support frame such as a bed frame, a plurality of inflatable sacs supported upon the support frame with each sac having an upper surface so that the plurality of sacs forms a patient support surface. The inflatable sacs are pressurized and maintained at a predetermined pressure. This predetermined pressure may be a patient height and weight specific pressure profile. A vibrating component is provided separate from the apparatus for pressurizing and maintaining the air sacs at the predetermined pressure. The vibrating component vibrates at least a portion of the patient support surface at a predetermined frequency.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: August 8, 2000
    Assignee: Hill-Rom Company, Inc.
    Inventors: Barry D. Hand, Robert C. Novack, Donald E. Williamson, James R. Stolpmann, Kenith W. Chambers
  • Patent number: 5606754
    Abstract: The present invention relates to a vibratory patient support system for providing therapeutic vibrational action or forces to a patient suffering from a respiratory ailment. The vibratory patient support system includes a rigid support frame such as a bed frame, a plurality of inflatable sacs supported upon the support frame with each sac having an upper surface so that the plurality of sacs forms a patient support surface. The inflatable sacs are pressurized and maintained at a predetermined pressure. This predetermined pressure may be a patient height and weight specific pressure profile. A vibrating component is provided separate from the apparatus for pressurizing and maintaining the air sacs at the predetermined pressure. The vibrating component vibrates at least a portion of the patient support surface at a predetermined frequency.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: March 4, 1997
    Assignee: SSI Medical Services, Inc.
    Inventors: Barry D. Hand, Robert C. Novack, Donald E. Williamson, James R. Stolpmann, Kenith W. Chambers
  • Patent number: 3930493
    Abstract: The linear flow rate of a liquid containing dissolved oxygen, such as blood, can be determined by means of an electrode assembly having exposed to the liquid a relatively large polarographically active cathode and spaced therefrom a reference anode. With an applied energizing voltage of about 0.4-0.9 volts a current plateau is reached which is proportional to fluid flow rate. As the device is also sensitive to oxygen content, compensation can be measured by providing on the assembly an oxygen sensing membrane covered polarographic electrode pair of the Clark type.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: January 6, 1976
    Assignee: Cordis Corporation
    Inventor: Donald E. Williamson
  • Patent number: D943563
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: February 15, 2022
    Assignee: Hill Phoenix, Inc.
    Inventors: Donald E. Williamson, Michael Hines
  • Patent number: D958129
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: July 19, 2022
    Assignee: Hill Phoenix, Inc.
    Inventors: Donald E. Williamson, Michael Hines