Patents by Inventor Frederick J. Hills

Frederick J. Hills 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).

  • Fire and rescue equipment dryer system and method
    Patent number: 6018885
    Abstract: A drying unit for drying fire and rescue equipment is disclosed. The unit includes a fresh air intake and heating system into which fresh air is drawn and heated. Once the air is heated it is passed into a drying chamber where wet items are placed. As drying occurs, excess moisture is collected in the water removal and exhaust system where it is evaporated by the heated air and then exhausted from the drying unit by an exhaust fan.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: February 1, 2000
    Inventor: Frederick J. Hill
  • Reaction products of alkenyl succinimides with ethylenediamine carboxy acids as fuel detergents
    Patent number: 4971598
    Abstract: An additive for fuel compositions. The additive comprises the reaction product of an alkenyl succinimide selected from the group consisting of mono-succinimides, bis-succinimides, and mixtures thereof, with iminodiacetic acid or an ethylenediamine carboxy acid. The reaction product finds particular utility as a fuel detergent.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: November 20, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Harry J. Andress, Henry H. Ashjian, Frederick J. Hills
  • Gas turbine engine fuel controller
    Patent number: 4506503
    Abstract: A controller [20] for scheduling the flow of a liquid fuel to a gas turbine engine [16]. The controller includes a fuel valve assembly [246], a compressor discharge pressure responsive (P.sub.CD) actuator [150], a differential linkage assembly [152] which is connected to the P.sub.CD actuator and a fuel demand responsive actuator [142] and operates a metering valve [154] in the fuel valve assembly.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: March 26, 1985
    Assignee: Solar Turbines Incorporated
    Inventors: Graham E. Ogborne, Frederick J. Hill