Patents by Inventor Frederick E. Bender

Frederick E. Bender 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).

  • Compressor system
    Patent number: 8192171
    Abstract: A compressor system includes a lead compressor operable to produce a flow of compressed fluid at a first output and a lag compressor operable to produce a flow of compressed fluid at a second output. The sum of the first output and the second output defines a system output. A lead variable speed motor is operable to drive the lead compressor at a first compressor speed to vary the first output and a lag variable speed motor is operable to drive the lag compressor at a second compressor speed to vary the second output. A sensor is operable to measure a system load, and a lead motor drive is operable to control the speed of the lead variable speed motor and to set a desired operating state of the lag variable speed motor in response to a comparison of the system load and the system output.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: June 5, 2012
    Assignee: Ingersoll-Rand Company
    Inventors: James D. Mehaffey, Jason A. Roberge, Frederick E. Bender
  • COMPRESSOR SYSTEM
    Publication number: 20100178174
    Abstract: A compressor system includes a lead compressor operable to produce a flow of compressed fluid at a first output and a lag compressor operable to produce a flow of compressed fluid at a second output. The sum of the first output and the second output defines a system output. A lead variable speed motor is operable to drive the lead compressor at a first compressor speed to vary the first output and a lag variable speed motor is operable to drive the lag compressor at a second compressor speed to vary the second output. A sensor is operable to measure a system load, and a lead motor drive is operable to control the speed of the lead variable speed motor and to set a desired operating state of the lag variable speed motor in response to a comparison of the system load and the system output.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 15, 2010
    Applicant: INGERSOLL-RAND COMPANY
    Inventors: James D. Mehaffey, Jason A. Roberge, Frederick E. Bender