Patents by Inventor Norman E. Ream

Norman E. Ream 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).

  • Patent number: 4450837
    Abstract: Underwater breathing apparatus immediately provides two liters of fresh air from the fresh air tank to a diver at any reasonable depth as inhalation begins. The necessary additional volume of gas in order to equalize the pressure of the ambient environment is automatically derived from a mixture of fresh air and recycled air, devoid of carbon dioxide and moisture, provided by an ambient pressure compensating diaphragm and associated chamber which is also in communication with the means for connecting the apparatus with the breathing organs of the diver.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: May 29, 1984
    Assignee: Kelsey W. Hatcher
    Inventor: Norman E. Ream