Patents by Inventor Steven F. Segrest

Steven F. Segrest 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).

  • Purge valve for diver's mask
    Patent number: 4241898
    Abstract: A purge valve for full face masks or helmets includes a base member fixed the mask wall and having passages opening in a flat, annular valve seat surface. A manually operable valve member includes an outer cylindrical wall, an inner cylindrical wall reentrant from an end wall and is axially slidable on a stem extending from the base member against the action of a compression spring nested between the cylindrical walls.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: December 30, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Steven F. Segrest
  • Depth selecting spool device
    Patent number: 3991475
    Abstract: A spool wherein line pay out is limited to a selected length by a pin that s retractable from one or more loops previously formed in the line and extending through a spool flange opening. A detented thumb wheel is eccentrically connected to the pin for retraction thereof.
    Type: Grant
    Filed: December 5, 1975
    Date of Patent: November 16, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Steven F. Segrest, James E. Preston
  • Helmet exhaust valve
    Patent number: 3960171
    Abstract: A diver's exhaust valve is described that is characterized by small size, ooth flow, and freedom from fouling by foreign matter. The valve comprises a valve member in the form of a spring and water biased diaphragm that separates the exhaust gas from the water which acts to close the valve. The disposition and configuration of flow passages produce continual flushing, while permitting adequate flow with a valve of smaller than usual size.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: June 1, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Steven F. Segrest, Josef M. Gardner