Patents by Inventor Lawrence James Moriarty

Lawrence James Moriarty 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).

  • Water-proof air-pressure equalizing valve
    Patent number: 4071040
    Abstract: A water-proof air-pressure equalizing valve for an enclosure capable of being pressurized to match a wide range of ambient air pressures including that corresponding to the pressure of several feet of water when totally submerged, such as the instrument housing of a military-type field telephone set, comprises a sandwich structure having a thin air-permeable hydrophobic membrane clamped between two rigid perforated sheets providing mechanical support against deformation due to water or air pressure.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: January 31, 1978
    Assignee: North Electric Company
    Inventor: Lawrence James Moriarty