Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 6571522 | Covering system for buildings The covering system includes at least one panel capable of being placed in an inclined position with respect to a horizontal. The panel incudes an inner chamber, a plurality of suction apertures through which the inner chamber communicates with a void ins... | 06/03/2003 |
| 6346041 | Economizer The present invention is an economizer that is capable of mixing outside air and inside air while incurring a significantly low pressure drop across the return air damper. In one embodiment, the economizer comprises a mixing chamber, a return air vent, an... | 02/12/2002 |
| 6241601 | High efficiency air mixer using jet streams A mixer for first and second fluids, e.g. fresh air and return air respectively, has an outlet for the first fluid which is contiguous to outlet for the second fluid. A first flap is able to move from a position wherein the fresh air outlet is closed to a... | 06/05/2001 |
| 4793247 | Method of mixing two or more gas flows In a method of mixing two or more gas flows, the gas flows are passed through an array of at least three parallel adjacent guide conduits so as to emerge from said conduits into a mixing zone as a corresponding array of parallel adjacent streams flowing i... | 12/27/1988 |
| 4677904 | Fluid flow control assembly A fluid flow control assembly which comprises an inlet defining structure through which a fluid medium flows in one direction, a partitioning member for dividing the fluid flow into first and second fluid streams, an outlet defining structure positioned d... | 07/07/1987 |
| 4078576 | Gas mixer A gas mixer for mixing two or more gases of different quantities and physical characteristics includes a gas inlet chamber and a gas mixing chamber in gaseous communication with the gas inlet chamber. Pairs of gas inlet ducts face one another across the g... | 03/14/1978 |
| 3973590 | Mixing valve for air distributing systems A mixing valve for mixing airstreams of different characteristics in an air distributing system, and wherein the mixing valve is provided with first and second groups of louvers so arranged that one group of louvers is moved toward an open position as the... | 08/10/1976 |
| 3960527 | Air delivery and treatment apparatus A centrifugal blower assembly having apparatus for optionally directing inlet air thereto from a plurality of air sources and which may be equipped with or coupled to, means for treating the inlet air prior to delivery thereof to the centrifugal blower as... | 06/01/1976 |
