Patents by Inventor David A. Black

David A. Black 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).

  • Patent number: 6443467
    Abstract: A baby stroller with a plurality of interchangeable front wheel support structures. The plurality of interchangeable front wheel support structures includes one swivel structure and one parallel shaft structure. In addition, the interchangeable wheel support structures also include different wheels configured for use on different terrain types.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: September 3, 2002
    Assignee: Racing Strollers, Inc.
    Inventor: David A. Black
  • Publication number: 20020096857
    Abstract: A trailer with a protective enclosure, or roll cage, for a baby stroller frame with a seat. The trailer includes left and right wheels, a trailer frame, and a towing arm for connecting the trailer to a bicycle. The trailer frame has a bottom frame, front frame, and rear frame with each frame having a plurality of frame members that form a protective roll cage for a stroller frame mounted in the trailer frame. A stroller frame can be inserted into the trailer frame, without being modified or adapted, and secured within the trailer frame for towing.
    Type: Application
    Filed: January 19, 2001
    Publication date: July 25, 2002
    Inventors: Martin Valdez, David A. Black
  • Patent number: 4622784
    Abstract: A waterstop for concrete structures, of the type consisting of an extruded strip of elastomeric material having a general flat medial portion extending between longitudinally ribbed side wing anchor portions is internally pressurized so as to compensate for dimensional changes of the concrete joint.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: November 18, 1986
    Inventors: David A. Black, John J. F. Deans
  • Patent number: D445367
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: July 24, 2001
    Assignee: Racing Strollers, Inc.
    Inventors: David A. Black, James Blubaugh