Patents by Inventor Dennis R. Grantier

Dennis R. Grantier 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).

  • Heating element undulation patterns
    Patent number: 9644899
    Abstract: Heat transfer sheets (70) for a rotary regenerative heat exchanger (10) have a alternating first and second undulation surfaces (71,81). The first and second undulation surfaces (71,81) are composed of parallel ridges (75,85) angled in alternating directions. When the heat transfer sheets (70) are stacked, they create passageways (79) between them that direct air/gas through them. The ridges (75,85) redirect the air flow near the surface of the heat transfer sheet (70) imparting turbulence reducing laminar flow to improve heat transfer. The heat transfer sheets (80) employ curved ridges (95) having valleys (97) between them that define passageways (99) that constantly redirect the air/gas flow minimizing turbulence, creating efficient heat transfer.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: May 9, 2017
    Assignee: Arvos, Inc.
    Inventors: Lawrence G. Cowburn, Scott R. Duffney, Dennis R. Grantier, Jeffery E. Yowell
  • HEATING ELEMENT UNDULATION PATTERNS
    Publication number: 20120305217
    Abstract: Heat transfer sheets (70) for a rotary regenerative heat exchanger (10) have a alternating first and second undulation surfaces (71,81). The first and second undulation surfaces (71,81) are composed of parallel ridges (75,85) angled in alternating directions. When the heat transfer sheets (70) are stacked, they create passageways (79) between them that direct air/gas through them. The ridges (75,85) redirect the air flow near the surface of the heat transfer sheet (70) imparting turbulence reducing laminar flow to improve heat transfer. The heat transfer sheets (80) employ curved ridges (95) having valleys (97) between them that define passageways (99) that constantly redirect the air/gas flow minimizing turbulence, creating efficient heat transfer.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 6, 2012
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Lawrence G. Cowburn, Scott R. Duffney, Dennis R. Grantier, Jeffery E. Yowell