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:
Oct. 19, 1993
Filed:
Nov. 18, 1992
Eugene W Finke, Wilmington, OH (US);
NuTone, Inc., Cincinnati, OH (US);
Abstract
A cyclonic vacuum cleaner for compacting dirt within a receptacle is disclosed. The vacuum cleaner includes a receptacle having a top side and bottom wall with an air inlet opening in the side wall. A frustoconical air flow structure is disposed within the receptacle to separate air entering the inlet from the top wall. A filter spanning from the side wall to the air flow producing structure is disposed within the receptacle between the air inlet and an outlet disposed within the receptacle between the air inlet and an outlet disposed in the side wall near the bottom wall of the receptacle. The outlet may be connected to a suction source to produce negative pressure within the receptacle so air entering the air inlet downwardly spirals about the air flow producing structure and a particulate within the air flow is removed by the filter. The downwardly spiralling air flow compacts the removed particulate atop the filter to create a further filter effect on the air flow. The air is exhausted from the receptacle through the outlet. The compaction of the removed particulate increases the capacity of the receptacle, and substantially reduces the disturbance of the air flow when the top wall is removed for emptying the receptacle.