Patents by Inventor John H. Fricker

John H. Fricker 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).

  • Dewar for storing and delivering liquid cryogen
    Patent number: 5906100
    Abstract: There are disclosed several embodiments of dewars each of which include an insulated apparatus for storing and delivering a liquid cryogen and a capacitance gauge for measuring the liquid level of cryogen. A process for rapidly filling the vessel with cryogen is also disclosed.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: May 25, 1999
    Assignee: Oceaneering International Inc.
    Inventors: Bruce D. Caldwell, Paul D. Duncan, John H. Fricker, Charles L. Hethcoat, III, Rick C. Hunter, Paul E. Robinson
  • Dewar for storing and delivering liquid cryogen
    Patent number: 5619857
    Abstract: Disclosed is an apparatus for storing and delivering a liquid cryogen. The apparatus is a dewar having a rotating liquid cryogen intake, a rotating gas supply/vent, and a rotating capacitance gauge. The rotating capacitance gauge comprises two elongated plates having outer edges shaped concentrically with the inner profile of the dewar on both ends that are electrically isolated from but fastened to one another with a small gap therebetween and electrical leads to the exterior of the dewar.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: April 15, 1997
    Assignee: Oceaneering International, Inc.
    Inventors: Bruce D. Caldwell, Paul D. Duncan, John H. Fricker, Rick C. Hunter