The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 1994
Filed:
Mar. 29, 1993
Applicant:
Inventor:
James R Dralle, Lemont, IL (US);
Assignee:
A. J. Dralle, Inc., Lemont, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55484 ; 55493 ; 55497 ; 55501 ; 55502 ; 55516 ;
Abstract
An air filtration system includes a holding frame supported by a universal mounting frame and a cartridge in the holding frame. The holding frame has a header used to permanently mount and seal the holding frame to the universal frame. The filtration cartridge fits inside the holding frame and is easily replaceable. A seal is provided between the holding frame and cartridge to assure that air passing through the system passes through the cartridge. In a preferred embodiment, the seal is provided on a flange at the back of the holding frame and another seal is provided on a cover that holds the cartridge into the holding frame.