Patents by Inventor James L. Robb

James L. Robb 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).

  • MULTI-STAGE COMPRESSION SYSTEM AND METHOD OF OPERATING THE SAME
    Publication number: 20160327049
    Abstract: A multi-stage compression system includes a plurality of centrifugal compression stages. Each stage includes an impeller and a variable speed motor coup led to the impeller. Each variable speed motor is operable at a speed between a (test speed and a second speed. The multi-stage compression system also includes a control system that is connected to each of the variable speed motors and is operable to vary the speed of each motor. The speed of each motor is varied simultaneously such that a ratio of the speed of any two variable speed motors remains constant.
    Type: Application
    Filed: July 20, 2016
    Publication date: November 10, 2016
    Inventors: Britton D. Dinsdale, Michael O. Muller, James L. Robb, IV
  • MULTI-STAGE COMPRESSION SYSTEM AND METHOD OF OPERATING THE SAME
    Publication number: 20070189905
    Abstract: A multi-stage compression system includes a plurality of centrifugal compression stages. Each stage includes an impeller and a variable speed motor coupled to the impeller. Each variable speed motor is operable at a speed between a first speed and a second speed. The multi-stage compression system also includes a control system that is connected to each of the variable speed motors and is operable to vary the speed of each motor. The speed of each motor is varied simultaneously such that a ratio of the speed of any two variable speed motors remains constant.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 16, 2007
    Applicant: INGERSOLL-RAND COMPANY
    Inventors: Britton D. Dinsdale, Michael O. Muller, James L. Robb