Patents by Inventor Randolph F. Stukel

Randolph F. Stukel 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).

  • Bulkhead barrier member
    Patent number: 6244301
    Abstract: A bulkhead barrier member for separating a tubular member into chamber sections is described. The barrier member has a diameter between about 0.001 to 0.005 inches less than the diameter of the inner surface of the tubular member when positioned within the tubular housing. Upon compression of the barrier member, the barrier member is radially expandable to engage the inner surface of the tubular member to provide a sealed barrier between the chamber sections.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: June 12, 2001
    Inventors: Craig A. Scott, Randolph F. Stukel