Patents by Inventor Daniel P. Nordstrom

Daniel P. Nordstrom 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: 6612620
    Abstract: A ducted flexible entry boot assembly provides a fluid-tight fitting between a wall of a fluid containment region and a conduit passing through the wall. The ducted flexible entry boot assembly comprises a seal member adapted to be disposed within the containment region, the seal member having a substantially planar seal portion and an integral hollow support sleeve concentric with the seal portion and adapted to extend axially into the containment region. The support sleeve has an outer surface and an inner, conduit receiving surface, and has a degree of flexibility relative to the seal portion sufficient to allow for the insertion of the conduit at angles equal to or other than an angle normal to the fluid containment wall while maintaining a fluid-tight environment. A mechanism is provided for rigidifying the seal portion of the seal member. The hollow support sleeve is releasably attached to the conduit.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: September 2, 2003
    Assignee: Advanced Polymer Technology, Inc.
    Inventors: Daniel P. Nordstrom, Andrew Youngs
  • Patent number: 6189717
    Abstract: A sump has a one-piece body, comprising a hollow base member for collecting fluids leaking from a piping system, the base member having an upper portion and a lower portion. The one-piece body further comprises a hollow riser section having an upper portion defining an opening, and a lower portion, the riser lower portion extending upwardly from the base member upper portion, the riser section having sidewalls with a generally corrugated shaped cross section in an axial direction. The hollow base member has a bottom and sidewalls, each of the bottom and sidewalls having an outer surface.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: February 20, 2001
    Assignee: Advanced Polymer Technology, Inc.
    Inventors: Robert H. Versaw, Jr., James W. Mosier, Daniel P. Nordstrom
  • Patent number: 6173997
    Abstract: A flexible entry boot assembly provides a fluid-tight fitting between a wall of a fluid containment region and a conduit passing through the wall. The flexible entry boot assembly comprises a seal member disposed within the containment region. A securing plate, disposed within the containment region, is releasably mounted to the seal member. A hollow support sleeve, integral with the seal member, extends axially into the containment region. The support sleeve has an outer surface and an inner, conduit receiving surface, and further has a degree of flexibility sufficient to allow for the insertion of the conduit at angles equal to or other than an angle normal to the fluid containment wall while maintaining a fluid-tight environment. The flexible boot assembly further comprises a mechanism for releasably attaching the hollow support sleeve to the conduit. A flexible, corrosion resistant sealing ring member is disposed outside the containment region.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: January 16, 2001
    Assignee: Advanced Polymer Technology, Inc.
    Inventors: Daniel P. Nordstrom, Andrew Youngs
  • Patent number: 5967567
    Abstract: A flexible entry boot provides a fluid-tight fitting between a wall of a fluid containment region and a conduit passing through the wall. The flexible entry boot comprises a seal member disposed within the containment region; and a securing plate disposed within the containment region and releasably mounted to the seal member. A flexibly rigid, hollow support sleeve is attached to the seal member. The hollow support sleeve has a degree of flexibility sufficient to allow for the insertion of the conduit at angles equal to or other than an angle normal to the fluid containment wall while maintaining a fluid-tight environment. A mechanism is provided for releasably attaching the hollow support sleeve to the conduit.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: October 19, 1999
    Assignee: Advanced Polymer Technology, Inc.
    Inventor: Daniel P. Nordstrom
  • Patent number: D404742
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: January 26, 1999
    Assignee: Advanced Polymer Technology, Inc.
    Inventors: Robert H. Versaw, Jr., James W. Mosier, Daniel P. Nordstrom
  • Patent number: D429735
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: August 22, 2000
    Assignee: Advanced Polymer Technology, Inc.
    Inventors: Robert H. Versaw, Jr., James W. Mosier, Daniel P. Nordstrom