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:
Feb. 22, 2000
Filed:
Apr. 08, 1998
Applicant:
Inventor:
Matthew Bruce Siemers, Ottawa, CA;
Assignee:
Lee Valley Tools Ltd., Ottawa, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55429 ; 55435 ; 55449 ; 55450 ; 554592 ;
Abstract
A molded plastic lid for use on an auxiliary trash collection container used with a shop vacuum cleaner or dust collector system. Incoming air and entrained materials are directed along the inside of the container at a shallow angle, and outgoing air is drawn from the center of the lid at a steeper angle. The resulting airflow in the container is a vortex or cyclone-like flow that deposits most of the incoming material within the container, thereby increasing the collection capacity of the system with which the lid is used by the volume of the auxiliary container.