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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7967669 | Variable air volume control apparatus The invention relates to a variable air volume control apparatus which compensates an open area ratio to be in direct proportion to an opening ratio at a low opening ratio range according to an open angle of a damper blade to achieve accurate and precise air volume ... | 06/28/2011 |
| 7441588 | Heat exchanger unit The present invention provides a heat exchanger unit that can save space, even when performing air conditioning in addition to ventilation. The heat exchanger unit performs heat exchange ventilation with a supply air channel flowing from an outdoor space to an indoo... | 10/28/2008 |
| 7332006 | Ventilating and air purifying device Ventilating and air purifying device including a case having a blower therein provided to a ceiling or a wall, a first flow passage provided between the blower and a room for making an outdoor, the blower, and the room in communication, a second flow passage for mak... | 02/19/2008 |
| 7305844 | Combined type air conditioner A combined type air conditioner is disclosed, by which manufacturing or assembly of the air conditioner is facilitated. The present invention includes a cabinet forming an exterior of the air conditioner to suck and blow an air by driving a blowing fan and an air gu... | 12/11/2007 |
| 7252253 | Bowl mill for a coal pulverizer with an air mill for primary entry of air A bowl mill for a coal pulverizer with an air mill for primary entry of air, comprising a substantially closed separator body (2) having a central axis; and a bowl-like grinding table (3) mounted on a shaft (4) rotatable about said central axis,... | 08/07/2007 |
| 7081049 | Ventilating system Ventilating system including a case mounted on a ceiling of a room, an inlet in a bottom surface of the case, and an outlet in a side surface of the case, a partition for dividing the case into an upper space, and a lower space, a fan in the upper space of the case,... | 07/25/2006 |
| 7011577 | Ventilating system Ventilating system including a case mounted on a ceiling of a room, an inlet in a bottom surface of the case, and an outlet in a side surface of the case, a partition for dividing the case into an upper space, and a lower space, a fan in the upper space of the case,... | 03/14/2006 |
| 7007498 | HVAC cabinet with configurable duct connections A cabinet for air handling equipment includes two similarly sized covers that are each nonsymmetrical about their vertical centerline. Each cover has an original supply or return air duct opening plus space for an alternate opening. The original and alternate openin... | 03/07/2006 |
| 6974382 | Year round selective dehumidifying and humidifying apparatus and method Apparatus which may be used year-round for dehumidifying air in the enclosed space of a building to comfortably allow a higher temperature during summer conditions, for exchanging air in the enclosed space year-round with fresh air to provide a more healthful enviro... | 12/13/2005 |
| 6912127 | System for vibration dampening A method and system dampens vibrations associated with a device installed in a system by supporting the device with one or more support members having a rigid support portion and a dampening support portion made from an elastic material. In one embodiment, an inform... | 06/28/2005 |
| 6629886 | Demand ventilation module A demand ventilation module for use with HVAC/R systems for ventilating inside space of a structure through an air pressure differential between return air and outside air. The demand ventilation module includes an integrated damper and an electronic cont... | 10/07/2003 |
| 6623353 | Venturi type air distribution system An air handling system for a building having a ceiling and enclosed space, the system including four interconnected induction units for mounting adjacent the ceiling. These units form four sides of a rectangular assembly. Each induction unit includes an a... | 09/23/2003 |
| 6551185 | Air intake and blowing device An air intake and blowing device, comprising a blowing fan (11) such as a turbo fan capable of blowing air in all directions which is installed inside a main casing (2) provided with an air intake port (5) and an air blowing port (9) enclosing the air int... | 04/22/2003 |
| 6536222 | Ceiling assembly for the ducted type of rvac An air conditioning unit having a return air inlet and a supply air outlet upon the roof of a vehicle that includes a mounting frame located within an opening in the roof of a vehicle with the frame extending into the comfort region of said vehicle, with ... | 03/25/2003 |
| 6514138 | Demand ventilation module A demand ventilation module is provided for use with HVAC systems in order to ventilate inside space of a structure through an air pressure differential between return air and outside air. The demand ventilation module includes an integrated damper. The d... | 02/04/2003 |
| 6514137 | Modular clean room plenum In accordance with the present invention, a modular clean room plenum is provided. This modular clean room plenum includes a rectangular plenum body with an air barrier forming a top surface of the modular clean room plenum and a ceiling grid forming a bo... | 02/04/2003 |
| 6460365 | Indoor unit of a package air conditioner The present invention provides an indoor unit of a package air conditioner sustaining a high air cooling efficiency and improved exterior appearance by constituting the front lower panel of indoor unit with a plate and a frame and making the imbibed indoo... | 10/08/2002 |
| 6460366 | Reinforced structure of front lower panel for a package air conditioner and method of making the same A reinforced structure of the front lower panel for a package air conditioner may comprise a front lower panel, which is mounted on the front lower portion of the indoor unit of the air conditioner having a blower device for air circulation, evaporator co... | 10/08/2002 |
| 6260375 | Air conditioner blowing cool air to many directions An air conditioner blowing cool air to many directions includes a housing having a hollow chamber, a face plate formed in a bottom of the housing. The face plate has a wind inlet and plural wind outlets. A wind box is provided on the wind inlet and in the... | 07/17/2001 |
| 6132309 | Modular clean room plenum A modular clean room plenum includes a rectangular plenum body with an air barrier forming a top surface of the modular clean room plenum and a ceiling grid forming a bottom surface of the modular clean room plenum. The modular clean room plenums are atta... | 10/17/2000 |
| 6093097 | Methods and apparatus for controlling an air inlet closure of an air conditioner An air conditioner includes an air inlet and an air outlet, an electric dust collector for removing dust from the air, a refrigerant-conducting heat exchanger for changing a temperature of the air, a fan for circulating air through the air conditioner, an... | 07/25/2000 |
| 5938524 | Damper blade system A damper blade system for positioning proximate a duct includes a housing with two, opposing sides; a first damper blade; and a second damper blade. The first damper blade is rotatably supported between the two sides of the housing, and one end of the fir... | 08/17/1999 |
| 5836814 | Damper blade system A damper blade system for positioning proximate a duct includes a housing with two, opposing sides; a first damper blade; and a second damper blade. The first damper blade is rotatably supported between the two sides of the housing, and one end of the fir... | 11/17/1998 |
| 5764149 | Enhanced capabilities of smoke detectors A smoke detector which includes a cover that is attached to a housing base by a mechanical latch. The housing contains a fan that induces an airflow through the housing, a smoke detector that can detect smoke in the airstream, and a flow sensor that can m... | 06/09/1998 |
| 5746655 | Method and apparatus for opening and closing an air outlet of an air conditioner An air conditioner includes a housing having an air inlet at its lower end. An air outlet is formed in an air discharge member which is mounted at an upper end of the housing. The discharge member is vertically movable relative to the housing, whereby the... | 05/05/1998 |
| 5522768 | Acoustic attenuating curb A noise reduction curb for use as an interface with a rooftop air conditioning unit by forming a base upon which the air conditioning unit rests and is mounted on a roof of a building. A noise reduction supply air duct is oriented in the longitudinal dime... | 06/04/1996 |
| 5453049 | Corner air filtration unit Air purification or filtration unit having a triangular housing, with the open front face being the hypotenuse of the triangle. The unit is particularly adaptable for use with conventional sized high efficiency particulate air, or HEPA filters and low pen... | 09/26/1995 |
| 5376045 | Twin blower airhouse An airhouse for supplying conditioned air to the interior of an enclosed building. Matched twin blowers symmetrically arranged within the airhouse enclosure are operated in unison to insure a balanced air flow into the airhouse and through the blowers. A ... | 12/27/1994 |
| 5368072 | Sliding gate terminal unit for air handling system A terminal unit for an air handling system and comprised of a housing having a conditioned air inlet for receiving forced conditioned air in the housing. A main outlet opening and a by-pass air outlet opening are provided in the housing. An air flow path ... | 11/29/1994 |
| 5343328 | Structure of automobile rear-view mirror An automobile rear-view mirror including a ventilation box attached to the mirror at an inner side adjacent to the automobile for passing a current of air during the movement of the automobile, a flow guide member attached to the mirror thereof at the bot... | 08/30/1994 |
| 5290188 | Inlet and damper system for airhouses Airhouses for supplying conditioned air in controlled amounts to the interior of large enclosed buildings. An improved air inlet, burner and damper construction adapted for utilization with both newly constructed and existing airhouses is provided. A burn... | 03/01/1994 |
| 4730551 | Heat distributor for suspended ceilings A heat distributor for equalizing the temperature gradient of a room. A housing is supported on a gridwork of a suspended ceiling. Warm air from near the ceiling is drawn through a perforated panel and an air filter mounted in the housing. An electric fan... | 03/15/1988 |
| 4681024 | Combination heater-light-ventilator unit A combination heater-light-ventilator unit for mounting in a ceiling, is disclosed. A cylindrical housing supports the unit and an annular grille on its bottom includes an arcuate heat discharge outlet around part of its circumference and an arcuate air i... | 07/21/1987 |
| 4570532 | Ventilating unit for animal buildings A ventilating unit particularly suited for animal buildings. The unit comprises a housing with a central exhaust and an intake duct on each side. Flaps are provided for opening or closing the exhaust and intake ducts and partly or fully diverting exhaust ... | 02/18/1986 |
| 4330082 | Air mixing apparatus Air mixing apparatus that is particularly useful in connection with a winter make-up air and a summer ventilation system for a factory, warehouse or the like includes inner and outer relatively movable ducts, the former having side walls, an air inlet thr... | 05/18/1982 |
| 4252054 | Dental clean air device A dental clean air cabinet is provided with a hood over a table top opening for directing flow thereto, said opening being covered by a heavy supporting screen. The inner portion of the cabinet is divided into two compartments, one compartment containing ... | 02/24/1981 |
