Patents by Inventor Albert E. Wallen

Albert E. Wallen 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).

  • Radial depressor
    Patent number: 4051799
    Abstract: A depressing force in the form of negative lift is hydrodynamically generd on a towed underwater vehicle as a result of fluid in motion passing static fluid separated by a membrane so as to cause a negative pressure zone externally of the membrane. The external negative pressure enhances distension of the membrane into a water foil generating additional negative lift.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: October 4, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Albert E. Wallen, Paul L. Whitehead
  • Ultra low frequency acoustic generator
    Patent number: 4030063
    Abstract: An underwater, ultra low frequency acoustic signal projector utilizes a pmatically powered signal generator wherein slide and poppet valves cooperate to effect pressure excursions on a piston connected to a water contacting signal generating piston.The generator is constantly pneumatically referenced to ambient hydrostatic pressures by a pressure equilibrium control system. A compressor recycles generator exhaust to provide substantially bubble free operation.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: June 14, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Albert E. Wallen