Patents by Inventor Marion Patrick McDonald, JR.

Marion Patrick McDonald, JR. 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).

  • Air compressor having supplemental power source
    Patent number: 10161271
    Abstract: A fluid expander is disclosed as used in conjunction with an air compressor that is driven by a prime mover. The fluid expander is structured to extract useful work from a fluid stream and add that work to the work provided by the prime mover to the compressor. In some embodiments a clutch can be used to decouple the expander from the compressor if insufficient work is developed by the expander. A gear train can also be used to change the rotational speed prior to work being delivered to the compressor.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: December 25, 2018
    Assignee: Ingersoll-Rand Company
    Inventors: James Christopher Collins, Marion Patrick McDonald, Jr.
  • AIR COMPRESSOR HAVING SUPPLEMENTAL POWER SOURCE
    Publication number: 20170211428
    Abstract: A fluid expander is disclosed as used in conjunction with an air compressor that is driven by a prime mover. The fluid expander is structured to extract useful work from a fluid stream and add that work to the work provided by the prime mover to the compressor. In some embodiments a clutch can be used to decouple the expander from the compressor if insufficient work is developed by the expander. A gear train can also be used to change the rotational speed prior to work being delivered to the compressor.
    Type: Application
    Filed: January 26, 2016
    Publication date: July 27, 2017
    Inventors: James Christopher Collins, Marion Patrick McDonald, JR.