Patents by Inventor Steve Doolittle

Steve Doolittle 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).

  • Hermetic motor and gas booster
    Patent number: 6948919
    Abstract: A fuel booster operable to compress a combustible fuel, the fuel booster comprising a compressor housing a compress rotor, and a seal assembly coupled to the compressor housing. The seal assembly and the compressor housing cooperate to at least partially define a hermetically sealed compressor chamber. A motor housing is coupled to the seal assembly. The motor housing and seal assembly cooperate to at least partially define a motor chamber that is sealed from the compressor chamber to prevent fluid flow therebetween. The fuel booster also includes a motor having a motor rotor and a motor stator. The motor rotor and the compressor rotor are contained within the compressor chamber. The motor rotor includes a cylindrical surface. The motor stator substantially surrounds the cylindrical surface and is contained within the motor chamber.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: September 27, 2005
    Assignee: Ingersoll-Rand Energy Systems Corporation
    Inventors: Eric Roslund, Steve Doolittle
  • Hermetic motor and gas booster
    Publication number: 20050099075
    Abstract: A fuel booster operable to compress a combustible fuel, the fuel booster comprising a compressor housing, a compressor rotor, and a seal assembly coupled to the compressor housing. The seal assembly and the compressor housing cooperate to at least partially define a hermetically sealed compressor chamber. A motor housing is coupled to the seal assembly. The motor housing and seal assembly cooperate to at least partially define a motor chamber that is sealed from the compressor chamber to prevent fluid flow therebetween. The fuel booster also includes a motor having a motor rotor and a motor stator. The motor rotor and the compressor rotor are contained within the compressor chamber. The motor rotor includes a cylindrical surface. The motor stator substantially surrounds the cylindrical surface and is contained within the motor chamber.
    Type: Application
    Filed: July 25, 2003
    Publication date: May 12, 2005
    Applicant: Ingersoll-Rand Energy System Corporation
    Inventors: Eric Roslund, Steve Doolittle