Patents by Inventor Jerome D. Phillips

Jerome D. Phillips 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).

  • Attenuator for use with respirators
    Patent number: 5720280
    Abstract: A positive/negative air pressure adaptor for a respirator system. The positive/negative air pressure adaptor has a port region for fluidically coupling a filter cartridge to a respirator. The adaptor has an inlet port for connecting to a positive pressure air source and a first check valve to restrict the flow of air from the port region to the filter cartridge. A second check valve may be provided to restrict the flow of air from the respirator to the port region. When the positive pressure air source is disconnected, the respirator system operates as a negative pressure respirator.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: February 24, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gerald V. Elstran, Robert J. Mattila, Jerome D. Phillips
  • Positive/negative air pressure adaptor for use with respirators
    Patent number: 5592935
    Abstract: A positive/negative air pressure adaptor for a respirator system. The positive/negative air pressure adaptor has a port region for fluidically coupling a filter cartridge to a respirator. The adaptor has an inlet port for connecting to a positive pressure air source and a first check valve to restrict the flow of air from the port region to the filter cartridge. A second check valve may be provided to restrict the flow of air from the respirator to the port region. When the positive pressure air source is disconnected, the respirator system operates as a negative pressure respirator.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: January 14, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gerald V. Elstran, Robert J. Mattila, Jerome D. Phillips