Internal Damper Patents (Class 454/361)
  • Patent number: 10088181
    Abstract: A system for passively exhausting air from a structure includes at least one pair of modules arranged on a roof of the structure. Each module has an exhaust face on one side and a sloped surface on the opposite side, and can receive exhaust air that flows upward from inside the structure. The modules can be arranged in pairs facing one another, with one of the sloped surfaces facing a direction of an environmental flow of air, so that the environmental air can flow up the sloped surface of one module and down the sloped surface of the other module without impinging on the exhaust faces of either module. The pairs can also be arranged side-by-side in an array, which can be expanded with additional pairs of modules to exhaust from the structure at a greater rate.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: October 2, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert David Wilding, Peter George Ross, Geri-Ann Quinlivan, Alan Donald Gillooly, Sean Patrick Abbott
  • Patent number: 8156931
    Abstract: A vent cap for a direct vent system. The cap may include a base plate and a semicircular outer housing secured to the base plate. A divider is coupled within the outer housing, with the divider forming in exhaust region and an inlet region. A heat shield is positioned within the semicircular outer housing in the outlet region. A direct vent pipe coupling is provided in the base plate and includes a first pipe having an outlet coupled to the divider.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: April 17, 2012
    Assignee: M&G Duravent, Inc.
    Inventors: John R. Jacklich, Eric Adair
  • Patent number: 8033900
    Abstract: A vent assembly for attachment to a fluid discharge conduit of the type connected to a clothes dryer, room exhaust fan, or the like is adapted to reduce or prevent the trapping of dirt or lint as well as flapping or vibration of the door in windy conditions. A mount having an opening is received on the conduit and a door is pivotally received by the mount. The door is operable for displacement with respect to the opening between an open position and a closed position when engaged by a fluid, such as air from a clothes dryer, flowing through the discharge conduit. A hood is pivotally mounted over the door and mount opening, and is operable for displacement with respect to the mount when engaged by the door and/or by fluid flowing through the discharge conduit.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: October 11, 2011
    Assignee: P-tec Products, Inc.
    Inventors: Kalvin K. Vanden Bosch, Brian R. Dykstra
  • Publication number: 20080311842
    Abstract: An HVAC system including a first diverter valve configured to divert, in varying amounts, an airflow entering the valve out two different outlets, in a manner that does not create a substantial increase in backpressure due to the diversion or otherwise substantially restrict the general flow of air in the HVAC system. The system further includes a first sensor assembly configured to sense a first environmental condition that includes at least one of temperature and a phenomenon indicative of the makeup of room air, a control unit, and a user interface unit, wherein the control unit is in communication with the diverter valve and the first sensor assembly.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 18, 2008
    Inventors: Gerald Allen Alston, Machiko Taylor, Justin Richard Dobbs
  • Patent number: 6869354
    Abstract: A damper box for an orifice air injector, the damper box comprising front and rear faces with respective front and rear openings therein, a pair of sides, a top and a bottom; and a pair of gates pivotally mounted within the damper box and actuatable between open and closed positions.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: March 22, 2005
    Assignee: General Electric Company
    Inventors: William T. Lipinski, Peter V. Centore, George M. Gorring, James J. Jennings, Robert Waltz, Thomas A. Laursen, Chris E. Latham, Duane Plessinger, Don Morrison, David O'Connor
  • Patent number: 5749780
    Abstract: A roof vent (8) comprises a conduit having an open entry end adapted for being arranged in sealing communication with an aperture in a roof surface, and an exit end spaced from said entry end, shield means (31) adapted for preventing entry of rain into said conduit, a valve assembly for controlling flow of air or gas, said valve assembly comprising a valve member (13, 22) adapted for opening to passage of air or gas when the pressure at the entry end exceeds the pressure at the exit end and adapted for closing on other conditions to prevent back-flow of air or gas, and thermostat means (27) adapted for opening said valve member to bidirectional passage of air or gas when the temperature at said thermostat means exceeds a predetermined level.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: May 12, 1998
    Assignee: Icopa A/S
    Inventors: Sven Harder, Jan Borst
  • Patent number: 5551916
    Abstract: A pressure stabilizing system for equalizing the pressure within an enclosure and the atmosphere during rapidly developing low pressure atmospheric conditions comprising a duct with a blow out valve or a valve positively operated by an electrical or gas operated system and a pressure detector to activate the electrical or gas operated valve.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: September 3, 1996
    Inventor: Harry R. Morse, Jr.
  • Patent number: 5080005
    Abstract: A passive building vent disposed in an outside vertical building wall, communicates between the outside atmospheric air and the confined air within the building, via a housing forming an air mixing chamber with a passageway disposed therethrough. A movable membrane is mounted within the housing at one end of the passageway, the other end of the passageway communicates with the confined air and is disposed outside of the vertical building wall. The membrane has a closed position, substantially blocking the passageway and an open position, permitting the free flow of air therethrough. The air passage permits the flow of outside air into the air mixing chamber. A venting device communicates with the air mixing chamber permitting the flow of air to exit from the air mixing chamber. A deflector is mounted on the housing proximate the venting device and communicates with the air mixing chamber.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: January 14, 1992
    Assignee: Leonard W. Suroff
    Inventor: Stanley Kolt