Title: Fan motor safety feature for grain drying system

Abstract: A crop-drying system utilizing a conventional crop or grain confining bin having means for delivering drying air to the grain retained within the bin. A solar pre-heat chamber is utilized to deliver pre-heated air to the impeller, with the solar pre-heat chamber comprising an elongated tubular structure having bottom, side and top walls, and wherein the bottom wall is an opaque, highly absorbent flexible film, with the side and top walls being transparent, highly transmissive flexible films. The pre-heat chamber is coupled to an air inlet chamber, with normally closed vents being provided for responding to a clogged condition to the normal inlet port of the inlet chamber.

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Inventors: Tonn, Martin H. (Amboy, MN, US)

Application Number: 617957
Filing Date: 1975-09-29
Publication_date: 1976-09-14
Assignee:
Primary Class(es): 34/93 55/311, 126/569
Other Classes:
US Patent Ref:

1195983	Aug, 1916	Farmer	55/311.
1853496	Apr, 1932	Blair	55/311.
1994766	Mar, 1935	Heglar	55/311.
3908631	Sep, 1975	Rom	34/93.
3919784	Nov, 1975	Tonn	34/93.

Other Refs:
Primary Examiner: Sprague, Kenneth W.
Assistant Examiner: Yeung, James C.
Attorney: Haugen; Orrin M.