Patents by Inventor Oscar W. Schoen, Jr.

Oscar W. Schoen, Jr. 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).

  • Dew point hygrometer
    Patent number: 4701052
    Abstract: A hygrometer utilizing condensation at the dew point to determine the water content of a gas. The presence of the condensate is determined using linear polarized light to distinguish the condensate from the metal surface on which it forms. A temperature gradient is established across the surface so that condensate forms on only part of the surface. The portion of the surface covered gives an indication of the temperature of the dew point.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: October 20, 1987
    Inventor: Oscar W. Schoen, Jr.
  • Saturated vapor pressure release mechanism
    Patent number: 4674074
    Abstract: A mechanism for compensating an underwater transducer for the ambient hydrostatic pressure. The transducer housing includes a quantity of liquid which may be vaporized in the housing volume. The relative volumes of vapor and liquid depend on the temperature, pressure and type of liquid used. A small heater in the liquid increases the temperature of the liquid so that the pressure of the vapor increases and counteracts the increase in hydrostatic pressure at greater depths. The liquid chosen should have a high critical pressure relative to the operating pressure of the transducer.
    Type: Grant
    Filed: October 23, 1984
    Date of Patent: June 16, 1987
    Inventor: Oscar W. Schoen, Jr.