Title: Clean room perforated floor panel

Abstract: A perforated floor panel for use in the construction of a floor for a "clean room" having a return air system, and the like, which provides a controlled constant balanced pressure drop across the floor and a roughing filtration of air passing through it, the floor panel comprising a perforated floor pan, a balancing pad, and a balancing pad retainer which holds the balancing pad in position against the bottom surface of the floor pan.

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Inventors: Shuler, Bernard R. (Louisville, KY, US)

Application Number: 509430
Filing Date: 1974-09-26
Publication_date: 1976-03-09
Assignee: American Air Filter Company, Inc. (Louisville, KY)
Primary Class(es): 55/494 55/501, 55/509, 55/513, 55/515, 55/517, 55/518, 55/519, 454/187
Other Classes:
US Patent Ref:

2685345	Aug, 1954	Lindner	55/509.
3158457	Nov, 1964	Whitfield	98/33.
3250063	May, 1966	Andrews	55/504.
3366013	Jan, 1968	Mad, Jr.	55/DIG.
3487766	Jan, 1970	Wood	98/31.

Other Refs: 302,527

Jan, 1955	CH

Primary Examiner: Lutter, Frank W.
Assistant Examiner: Prunner, Kathleen J.
Attorney: Winger; Jon C.