Patents by Inventor Greig J. Tollar

Greig J. Tollar 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).

  • Self contained heating/cooling roof top unit with two stage relief hood
    Patent number: 9249980
    Abstract: A self-contained air unit for installation on a roof top of a building has a pressure relief opening that is independent of the air circulation system of the unit. The air circulation system has a first blower and the pressure relief opening has a damper system that connects the pressure relief opening to ambient air through two passages. One of the passages contains a second blower to exhaust air from the air circulation system and from the independent pressure relief opening simultaneously. A two-stage pressure relief hood is provided for use with a self-contained air unit.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: February 2, 2016
    Assignee: 2109617 Ontario Inc.
    Inventor: Greig J. Tollar
  • Self contained heating/cooling roof top unit with built in independent pressure relief
    Patent number: 9188353
    Abstract: A self-contained pre-manufactured roof top unit is used to circulate fresh air, heat or cool a building. The housing has a blower connected into a circulation system to circulate air into and out of the building. The unit has a pressure relief opening for connection into the building that is used to relieve air pressure buildup within the building. The pressure relief opening is part of a pressure relief passage that is independent of the blower and has an exhaust vent that opens and closes automatically in response to pressure differential between the building and ambient air.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: November 17, 2015
    Assignee: 2109617 Ontario Inc.
    Inventor: Greig J. Tollar
  • SELF CONTAINED HEATING/COOLING ROOF TOP UNIT WITH BUILT IN INDEPENDENT PRESSURE RELIEF
    Publication number: 20110244783
    Abstract: A self-contained pre-manufactured roof top unit is used to circulate fresh air, heat or cool a building. The housing has a blower connected into a circulation system to circulate air into and out of the building. The unit has a pressure relief opening for connection into the building that is used to relieve air pressure buildup within the building. The pressure relief opening is part of a pressure relief passage that is independent of the blower and has an exhaust vent that opens and closes automatically in response to pressure differential between the building and ambient air.
    Type: Application
    Filed: June 16, 2011
    Publication date: October 6, 2011
    Inventor: GREIG J. TOLLAR
  • Self contained heating/cooling roof top unit with built in independent pressure relief
    Patent number: 8021217
    Abstract: A self-contained pre-manufactured roof top unit is used to circulate fresh air, heat or cool a building. The housing has a blower connected into a circulation system to circulate air into and out of the building. The unit has a pressure relief opening for connection into the building that is used to relieve air pressure buildup within the building. The pressure relief opening is part of a pressure relief passage that is independent of the blower and has an exhaust vent that opens and closes automatically in response to pressure differential between the building and ambient air.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: September 20, 2011
    Assignee: MNE Engineering Inc.
    Inventor: Greig J. Tollar
  • SELF CONTAINED HEATING/COOLING ROOF TOP UNIT WITH TWO STAGE RELIEF HOOD
    Publication number: 20110111688
    Abstract: A self-contained air unit for installation on a roof top of a building has a pressure relief opening that is independent of the air circulation system of the unit. The air circulation system has a first blower and the pressure relief opening has a damper system that connects the pressure relief opening to ambient air through two passages. One of the passages contains a second blower to exhaust air from the air circulation system and from the independent pressure relief opening simultaneously. A two-stage pressure relief hood is provided for use with a self-contained air unit.
    Type: Application
    Filed: November 10, 2010
    Publication date: May 12, 2011
    Inventor: GREIG J. TOLLAR
  • SELF CONTAINED HEATING/COOLING ROOF TOP UNIT WITH BUILT IN INDEPENDENT PRESSURE RELIEF
    Publication number: 20070190925
    Abstract: A self-contained pre-manufactured roof top unit is used to circulate fresh air, heat or cool a building. The housing has a blower connected into a circulation system to circulate air into and out of the building. The unit has a pressure relief opening for connection into the building that is used to relieve air pressure buildup within the building. The pressure relief opening is part of a pressure relief passage that is independent of the blower and has an exhaust vent that opens and closes automatically in response to pressure differential between the building and ambient air.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 16, 2007
    Inventor: GREIG J. TOLLAR