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http://en.wikipedia.org/wiki/Frederick_McKinley_Jones

http://en.wikipedia.org/wiki/Willis_Carrier

Frederick_McKinley_Jones

Around 1935, Jones designed a portable air-cooling unit for trucks carrying perishable food, and received a patent for it on July 12, 1940. Numero sold his movie sound equipment business to RCA and formed a new company in partnership with Jones, the U.S. Thermo Control Company (later the Thermo King Corporation) which became a $3 million business by 1949. Portable cooling units designed by Jones were especially important during World War II, preserving blood, medicine, and food for use at army hospitals and on open battlefields.

Patents

U.S. Patent 2,163,754 was issued on June 27, 1943 ? Ticket dispensing machine.
132182 U.S. Patent D 132,182 was issued on April 28, 1943 ? Design for air conditioning unit.
U.S. Patent 2,336,735 was issued on December 14, 1943 ? Removable cooling units for compartments.
U.S. Patent 2,337,164 was issued on December 21, 1943 ? Means for automatically stopping and starting gas engines.
U.S. Patent 2,376,968 was issued on May 29, 1945 ? Two-cycle gas engine.
U.S. Patent 2,417,253 was issued on March 11, 1947 ? Two-cycle gas engine.
U.S. Patent 2,475,841 was issued on July 12, 1949 ? Automatic refrigeration system for long-haul trucks.
U.S. Patent 2,475,842 was issued on July 12, 1949 ? Starter generator.
U.S. Patent 2,475,843 was issued on July 12, 1949 ? Means operated by a starter generator for cooling a gas engine.
U.S. Patent 2,477,377 was issued on July 26, 1949 ? Means for thermostatically operating gas engines.
U.S. Patent 2,504,841 was issued on April 18, 1950 ? Rotary compressor.
U.S. Patent 2,509,099 was issued on May 23, 1950 ? System for controlling operation of refrigeration units.
159209 U.S. Patent D 159,209 was issued on July 4, 1950 ? Design for air conditioning unit.
U.S. Patent 2,523,273 was issued on September 26, 1950 ? Engine actuated ventilating system.
U.S. Patent 2,526,874 was issued on October 24, 1950 ? Apparatus for heating or cooling atmosphere within an enclosure.
U.S. Patent 2,535,682 was issued on December 26, 1950 ? Prefabricated refrigerator construction.
U.S. Patent 2,581,956 was issued on January 8, 1952 ? Refrigeration control device.
U.S. Patent 2,666,298 was issued on January 19, 1954 ? Methods and means of defrosting a cold diffuser.
U.S. Patent 2,696,086 was issued on December 7, 1954 ? Method and means for air conditioning.
U.S. Patent 2,780,923 was issued on February 12, 1957 ? Method and means for preserving perishable foodstuffs in transit.
U.S. Patent 2,850,001 was issued on September 2, 1958 ? Control device for internal combustion engine.
U.S. Patent 2,926,005 was issued on February 23, 1960 ? Thermostat and temperature control system.

Willis Carrier

In Buffalo, New York, on July 17, 1902, in response to a quality problem experienced at the Sackett-Wilhelms Lithographing & Publishing Company of Brooklyn, Willis Carrier submitted drawings for what became recognized as the world's first modern air conditioning system. The 1902 installation marked the birth of air conditioning because of the addition of humidity control, which led to the recognition by authorities in the field that air conditioning must perform four basic functions:

1.) control temperature; 2.) control humidity; 3.) control air circulation and ventilation; 4.) cleanse the air.

After several more years of refinement and field testing, on January 2, 1906, Carrier was granted U.S. patent No. 808897 on his invention, which he called an "Apparatus for Treating Air," the world's first spray-type air conditioning equipment. It was designed to humidify or dehumidify air, heating water for the first and cooling it for the second.

In 1906, Carrier discovered that "constant dew-point depression provided practically constant relative humidity," which later became known among air conditioning engineers as the "law of constant dew-point depression." On this discovery he based the design of an automatic control system, for which he filed a patent claim on May 17, 1907. The patent, No. 1,085,971, was issued on February 3, 1914.