Patents by Inventor Robert Desmond Douglas

Robert Desmond Douglas 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).

  • Compressors for providing automatic capacity modulation and heat exchanging system including the same
    Patent number: 6663358
    Abstract: A compressor for providing automatic capacity modulation is disclosed. The compressor comprises a compression chamber, a compressing member, a reexpansion area, a flow passage, a valve member, and a biasing member. The flow passage is in fluid communication with the compression chamber and the reexpansion area. In one position, the valve member permits flow through the flow passage and in a second position it prevents flow. The valve member is subjected to a first operating condition of fluid on one side and a second operating condition of the fluid on the other side. The biasing member exerts a biasing force on the valve member. When the first operating condition reaches a predetermined point relative to the second operating condition, the valve member moves and effects a change in the capacity of the compressor.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: December 16, 2003
    Assignee: Bristol Compressors, Inc.
    Inventors: Joe Frank Loprete, David Turner Monk, Eugene Karl Chumley, Tyrone Scott Simerly, John K. Narney, II, Mark Randall Trent, Panteleimon V. Hatzikazakis, Tom Evans Goodnight, Rongchang Xin, Robert Desmond Douglas
  • Compressors for providing automatic capacity modulation and heat exchanging system including the same
    Publication number: 20020187057
    Abstract: A compressor for providing automatic capacity modulation is disclosed. The compressor comprises a compression chamber, a compressing member, a reexpansion area, a flow passage, a valve member, and a biasing member. The flow passage is in fluid communication with the compression chamber and the reexpansion area. In one position, the valve member permits flow through the flow passage and in a second position it prevents flow. The valve member is subjected to a first operating condition of fluid on one side and a second operating condition of the fluid on the other side. The biasing member exerts a biasing force on the valve member. When the first operating condition reaches a predetermined point relative to the second operating condition, the valve member moves and effects a change in the capacity of the compressor.
    Type: Application
    Filed: January 29, 2002
    Publication date: December 12, 2002
    Inventors: Joe Frank Loprete, David Turner Monk, Eugene Karl Chumley, Tyrone Scott Simerly, John K. Narney, Mark Randall Trent, Panteleimon V. Hatzikazakis, Tom Evans Goodnight, Rongchang Xin, Robert Desmond Douglas