Ventilation – Having forced recirculation – Including automatic control means
Reexamination Certificate
2003-01-27
2004-08-17
Joyce, Harold (Department: 3749)
Ventilation
Having forced recirculation
Including automatic control means
C454S342000
Reexamination Certificate
active
06776708
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to smoke extraction and, more specifically, to a smoke extraction system designed to be adapted to new air conditioning units or can be provided as a retrofit unit in itself. The smoke extraction system is provided with an infrared smoke detector, infrared thermostat, A/C sensor and transition door. When the smoke detector detects smoke it sends a signal to the thermostat changing the setting to exhaust mode, at the same time the signal is received by the electronics of the transition door, which opens the transition door, thereby sealing the unit's supply side air, allowing smoke to be vented to the outside. The extraction system can be adapted to a central air conditioning system. One or more smoke detectors having signal transmission capabilities signal the thermostat to engage the venting mode of the air conditioning unit. The thermostat also triggers a signal to the electronics controlling an exhaust portal located within the air condition unit. When the air conditioning unit engages the vent mode, the air is venting through the transition door thereby creating a draft that will remove the smoke and vent it outside.
2. Description of the Prior Art
There are other smoke extraction devices designed for extracting smoke. Typical of these is U.S. Pat. No. 2,586,797 issued to Dunlop et al on Feb. 26, 1952.
Another patent was issued to Sheppard on Jun. 26, 1973 as U.S. Pat. No. 3,741,101. Yet another U.S. Pat. No. 3,826,180 was issued to Hayashi on Jul. 30, 1974 and still yet another was issued on May 20, 1975 to Miller as U.S. Pat. No. 3,884,133.
Another patent was issued to van der Lely on Dec. 2, 1975 as U.S. Pat No. 3,923,096. Yet another U.S. Pat. No. 3,926,101 was issued to Moss on Dec. 16, 1975. Another was issued to Phillips on Dec. 20, 1977 as U.S. Pat. No. 4,063,595 and still yet another was issued on Aug. 23, 1988 to Aniello as U.S. Pat. No. 4,765,231.
Another patent was issued to Natale et al. on Apr. 4, 1989 as U.S. Pat. No. 4,818,970. Yet another U.S. Pat. No. 5,260,691 was issued to Shyu on Nov. 9, 1993. Another was issued to Arceneaux on Apr. 25, 2000 as U.S. Pat. No. 6,053,809 and still yet another was issued on Sep. 12, 2000 to James as U.S. Pat. No. 6,118,381.
U.S. Pat. No. 2,586,797
Inventor: James Dunlop et al.
Issued: Feb. 26, 1952
The invention relates to protection against fumes resulting from fires in buildings and being vented to the outdoors. A system for protecting one portion of a building against fumes from a fire in another portion having an opening connecting it to the first named portion, said system comprising; a collection duct in said other portion adjacent said opening; an exhaust fan having its inlet connected to said duct and its outlet discharging outdoors; operating means for said fan; an air intake on said one portion side of said opening; and means for causing operation of said fan operating means when such fire occurs to draw air through said opening from said air intake into said other portion to create a draft through said opening to oppose the fumes and with said fumes entrained therewith into said duct and to discharge said air and fumes outdoors.
U.S. Pat. No. 3,741,101
Inventor: Albert S. Sheppard
Issued: Jun. 26, 1973
A gravity-operated automatically opening ventilator unit which is easily installed in the roof of a building and which, at a predetermined temperature, will automatically open to vent smoke, gases and heat from the interior of the building to atmosphere.
U.S. Pat. No. 3,826,180
Inventor: Toshikazu Hayashi
Issued: Jul. 30, 1974
This invention relates to a ventilator wherein an electronic circuit is actuated when a detecting element detects the existence of any smoke or gas while a fan is in a manual selected slow rotating node of operation or in a stand by halting position, and then the fan is automatically put into full rotation in order to expel smoke or such gas as carbon monoxide, and also for a specified period after completion of this expelling operation the fan is kept rotating during the above operation through the function of a delay-off circuit, with a shutter of a ventilating window being kept open by means of a switch network.
U.S. Pat. No. 3,884,133
Inventor: Edward J. Miller
Issued: May 20, 1975
A method of controlling smoke, ventilation and fire flash point temperature in a multi-zone building served by a central ventilation system using a divided common return air duct having separate branch damper connections for each zone for directing all return air from a fire zone into the other section of the common return air duct.
U.S. Pat. No. 3,923,096
Inventor: Cornelis van der Lely
Issued: Dec. 2, 1975
A multistory building which is comprised of a plurality of superimposed elongated box-shaped prefabricated sections, each of which encloses a portion of the living space in the building, each said section comprising a floor, at least one wall and a ceiling member, said wall extending higher than the top of said ceiling member, said wall extending higher than the top of said ceiling member whereby an air space constituting a channel for transporting air is defined in each said section by the top of said ceiling member, air conditioning means provided in the building in passage communication with said air space of each said section whereby air conditioned by said air conditioning means is received in said air space, said wall being adjacent said air space and the bottom of the floor of the section next above being adjacent to and defining the top of said air space, each said ceiling member and said floor comprising heat exchange means between said air space and the living space in the sections adjacent each whereby with a difference in temperature between the air in said air space and the air in said living space a heat transfer occurs through said member and said floor relative to said living space each said section having an opening in said ceiling member for the passage of air between said air space and the living space defined by such section, closure means in said opening and adjustment means for selectively opening said closure means, and thermostatic means in the living space provided by such section adapted to control said adjustment means.
U.S. Pat. No. Des. 3,926,101
Inventor: Cyril H. Moss
Issued: Dec. 16, 1975
This invention relates to systems for cleaning smoke from buildings when a fire occurs therein. A fire safety system for use in a building having a plurality of accommodation units and a plurality of communal units providing means of access to said accommodation units, said system including a plurality of smoke detectors in said communal units and means controlled by said smoke detectors and responsive to detection of smoke in one of said communal units to admit air under pressure to that communal unit and to restrict passage of smoke from that communal unit to another communal unit or other communal units.
U.S. Pat. No. 4,063,595
Inventor: Leonard Phillips
Issued: Dec. 20, 1977
An air conditioning system capable of regulating the temperature of incoming air and further comprising safety features relating to the sensing of abnormal conditions within a room or like treated area concerning the detection of fire, smoke or abnormally high temperature conditions. The flow of air from the exterior of the system is directed to the interior of the room or area being conditioned by a fan or like blower element while being conditioned through direct exposure to hot or cold conditioning fluid. Safety features include sensing elements connected to a liquid spray assembly as well as the blower and air intake so as to determine the amount of incoming air pressure as well as regulate the delivery of certain safety liquids such as water, through the spray assembly.
U.S. Pat. No. 4,765,231
Inventor: Michael J. Aniello
Issued: Aug. 23, 1988
Harmful smoke is drawn from rooms in an air conditioned building by way of duct work which supplies conditioned air to the rooms during normal operation. When a potentially
Daoutis Rick
Nicks Bill
Joyce Harold
Kroll Michael I.
LandOfFree
Smoke extraction system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Smoke extraction system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smoke extraction system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3290099