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:
Jun. 04, 1996
Filed:
May. 27, 1994
Applicant:
Inventor:
Robert A Frey, Westlake, OH (US);
Assignee:
HMI Industries, Inc., Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55309 ; 55380 ; 55DI / ;
Abstract
A vacuum cleaner filter bag having multiple, nested inner bags and an outer bag for sequentially filtering a discharge from a vacuum cleaner, wherein each of the inner bags is adapted to cease filtering the discharge therethrough when the bag has become clogged with particulate matter. Each inner bag is designed to rupture, when clogged, in a manner to allow the discharge to bypass that bag and directly enter the next bag.