Plant husbandry – Frost preventing
Patent
1978-04-03
1980-08-12
Davis, Albert W.
Plant husbandry
Frost preventing
126 595, A01G 1306
Patent
active
042166144
ABSTRACT:
There is disclosed a system for heating the atmosphere adjacent a ground surface in an agricultural area as well as the process and apparatus for constructing the system. The system comprises an elongate heat distributing structure which extends through the cultivated area and means for circulating a relatively warm fluid through the heat distributing structure. The heat distributing structure includes a plastic shell member disposed in an upwardly concave configuration having a plurality of imperforate wall conduits bonded thereto. The shell member is filled with sand, crushed rock or gravel to provide a heat sink. The top of the plastic shell member is covered with an asphaltic material which acts to close the top of the heat distributing structure and radiate heat to the atmosphere in the cultivated area. The apparatus for laying the heat distributing structure comprises a tracked vehicle having a plow thereon for excavating a shallow furrow in the earth, a reel containing the spooled shell member, a trough on which the shell member runs during unreeling, means for delivering crushed rock into the top of the shell member and means for applying the asphaltic material to the top of the shell member.
REFERENCES:
patent: 1375221 (1921-04-01), Lowe
patent: 2164011 (1939-06-01), Hilborn
patent: 4117685 (1978-10-01), Skaife
Davis Albert W.
Moller G. Turner
Streule, Jr. Theophil W.
Triad & Associates, Inc.
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