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Patent No. 6049912

Mountable Printable Placard With Headband

A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.

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Class 165/246 - Responsive to pressure


Subclass of Class 165 - Heat exchange
Definition: Subject matter wherein the delivered rate is varied according
No. of patents: 15
Last issue date: 04/18/2006


NumberTitleIssue Date
7028768Fluid heat exchange control system
A method of controlling a hydronic system is provided. The hydronic system includes a plurality of fluid heat exchange units for feeding a load, and a bypass valve for bypassing the load. The method includes operating at least a first and a second fluid heat exchang...
04/18/2006
7022234Method for biological treatment of environmental contaminants and waste
The invention is directed to an apparatus for delivering activated microorganisms to an environment to be treated. The apparatus has a bioreactor containing microorganisms, a supply of organic and inorganic nutrients and a controller. The controller maintains the co...
04/04/2006
7013968Method and apparatus for individually cooling components of electronic systems
A cooling system is configured to supply individually metered amounts of cooling fluid to heat generating components, e.g., processors, micro-controllers, high speed video cards, disk drives, semi-conductor devices, and the like, of an electronic system. The cooling...
03/21/2006
7007740Adjustable flow heat recovery ventilator and method
A novel system for and method of balancing fresh air flow and exhaust air flow through a ventilator. The ventilator has an air-to-air heat exchanger operably mounted within a principal fresh air flow passage and a principal stale air flow passage. A flow meter is pr...
03/07/2006
6929062Air-conditioning apparatus
An air-conditioning apparatus regulates at least the temperature of at least one room to a predetermined temperature desired value (TRAUM SOLL) by ventilation with heated or cooled supply air. The air-conditioning apparatus has a supply air motor (15
08/16/2005
6091218Energy conservation circuit and method for use with multi-phase motors used to power a variable load
An energy conserving apparatus and method are disclosed. The apparatus is used for conserving power supplied to a multi-phase motor used to power a compressor having a high pressure output line. The motor has a plurality of voltage input lines for connect...
07/18/2000
5761908Apparatus suited for ventilating rooms contaminated with infectious disease organisms
A self-contained ventilation apparatus is disclosed for ventilating buildings, e.g., patient rooms such as hospital rooms, waiting rooms, hospital operating rooms, doctors' offices, and clinics, especially rooms contaminated with infectious microorganisms...
06/09/1998
5540555Real time remote sensing pressure control system using periodically sampled remote sensors
A real time remote sensing pressure control system is provided which uses periodically sampled remote sensors to generate a bias signal that modifies the base setpoint of a proportional-integral controller that controls variable speed pumps. This control ...
07/30/1996
5418438Draft inducer air flow control
A control circuit for a motor driving a fan for inducing a draft in the exhaust of a heating, ventilating and air conditioning (HVAC) system. The control circuit may be used in conjunction with either a variable pressure sensor or one or two discrete pres...
05/23/1995
5076346Air conditioner
A duct type of air conditioner wherein temperature in a plurality rooms are controlled independently, and which after having controlled opening and closing of dampers for the rooms, is capable of controlling air volume, controlling the opening and closing...
12/31/1991
4836096Variable air volume air distribution system
An improved variable air volume air distribution system for distributing air within the interior of a building. The variable air volume air distribution system includes an air supply plenum, a supply fan for transferring air from the air supply plenum int...
06/06/1989
4781107Method and apparatus for maintaining a zero-pressure type plant
A method of continuously regulating the operation of a ventilation plant of the zero-pressure type, which is preferably of heat recovery type. This is done by continuously regulating the rotational speed of the exhaust fan. The invention also relates to a...
11/01/1988
4627568Moisture eliminator for air washer
An air conditioning system is disclosed which employs an air washer for treating variable volumes of air moving through the air washer per unit of time. The air washer includes a moisture eliminator that is provided with means for changing its effective f...
12/09/1986
4437608Variable air volume building ventilation system
A variable air volume ventilation system (10) is disclosed in which the output air flow from a supply fan (13), delivered through a supply duct (11) to various places within a building, is returned by a return duct (15) through a return fan (17) and then ...
03/20/1984
4407185Return air flow control for variable air volume system
A variable air volume (VAV) system in which the inflow of outside air is maintained above a predetermined value by maintaining a substantially fixed negative pressure in the plenum by the use of a static pressure sensor and control system for controlling ...
10/04/1983
 
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