Patents by Inventor Manfred Harle

Manfred Harle 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).

  • Fire block conduit coupler
    Patent number: 6615860
    Abstract: A coupler which is used in coupling plastic conduit through a separation in a building has plastic end regions for an overlapped accurately positioned sealed coupling with the plastic conduit to each end of the coupler. The plastic end regions are separated by an intermediate region formed by a wall of plastic based intumescent material which defines a fluid flow passage through the coupler. The fluid flow passage wall has a sufficient thickness of the intumescent material to produce a complete blockage of the passage when the coupler is subjected to conditions which cause an intumescing of the intermediate region wall material.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: September 9, 2003
    Assignee: Royal Group Technologies Limited
    Inventors: Brian M. Didone, Manfred Harle
  • Fire block conduit coupler
    Publication number: 20030131881
    Abstract: A coupler which is used in coupling plastic conduit through a separation in a building has plastic end regions for an overlapped accurately positioned sealed coupling with the plastic conduit to each end of the coupler. The plastic end regions are separated by an intermediate region formed by a wall of plastic based intumescent material which defines a fluid flow passage through the coupler. The fluid flow passage wall has a sufficient thickness of the intumescent material to produce a complete blockage of the passage when the coupler is subjected to conditions which cause an intumescing of the intermediate region wall material.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 17, 2003
    Inventors: Brian M. Didone, Manfred Harle