Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 6986386 | Single-coil twin-fan variable-air-volume (VAV) system for energy-efficient conditioning of independent fresh and return air streams An HVAC system has two variable-air-volume (VAV) systems, a first VAV system for moving fresh air and a second VAV system for moving recycled air. Both the fresh air and recycled air are cooled and dehumidified by a single heat-exchanging coil. The fresh and recycle... | 01/17/2006 |
| 6386281 | Air handler with return air bypass for improved dehumidification A VAV air handler includes a cooling coil with a return air bypass damper for improved dehumidification. The bypass interjects into the supply air a portion of relatively warm, dry return air downstream of the cooling coil. This allows the cooling coil to... | 05/14/2002 |
| 5806582 | Method and arrangement for controlling heat transfer in ventilation Apparatus or air conditioning apparatus A method and an arrangement for controlling heat transfer in a ventilation apparatus or an air conditioning apparatus, in which heat contained in exhaust air is recovered into supply air by means of a heat transfer circuit having fluid circulation. Additi... | 09/15/1998 |
| 4519217 | Supermarket environmental control system An air temperature regulating or conditioning control apparatus for use in a space having one or more refrigerated display fixtures. The fixtures have an open refrigerated display zone separated from the conditioned room space by one or more planes (curta... | 05/28/1985 |
| 4285390 | Method of and apparatus for supplying treated air to spaces having different cooling requirements Fresh, outside air may be supplied to a first space, such as a dining area of a restaurant or the like, while air from the first space may be recirculated through an air conditioning unit for cooling or heating the air, which is returned to the first spac... | 08/25/1981 |
| 4054035 | Ventilation air tempering device A multi-zone heating-cooling system having a plurality of reversible cycle air heating and cooling units connected to a closed loop water circulation circuit, and at least one ventilating air tempering coil in liquid flow communication with the water flow... | 10/18/1977 |
