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:
Aug. 11, 1992
Filed:
Sep. 09, 1991
Applicant:
Inventor:
Norwood S Carter, Jr, Harrells, NC (US);
Assignee:
Fasco Industries, Inc., Fayetteville, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55399 ; 554591 ;
Abstract
A one-piece, truncated conical annulus or dust separator body is molded from a high impact polystyrene material in such manner that a narrow rib is formed on the inner conical surface of the body to extend continuously in a spiral path from the larger to the smaller end thereof. A flange on its larger end is used to support the body in a vacuum cleaner chamber above a dust collecting canister. Dust-laden air enters the upper end of the body tangentially and cyclonically so that dust particles are urged outwardly by centrifugal forces, and are fed by the spiral rib downwardly into the canister.