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:
Apr. 20, 1982
Filed:
Apr. 07, 1980
Applicant:
Inventors:
Charles A Mattson, Woodland Hills, CA (US);
George M Zink, Simi Valley, CA (US);
Douglas A Milliken, Thousand Oaks, CA (US);
Assignee:
Allegretti & Company, Chatsworth, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
15330 ; 15337 ; 15339 ; 15405 ; 241 56 ; 4151 / ;
Abstract
A portable blower-vacuum unit has an impeller for drawing air axially through a housing air inlet, and for discharging the air centrifugally through a tangential housing air outlet. In a blower mode, a perforate cover plate prevents ingestion of solid material by the impeller. In a vacuum mode, a vacuum conduit connects to the housing in lieu of the cover plate, and a vacuum bag attaches to the air outlet. A mulching blade rotates with the impeller to chop any solid material passing through the housing when the unit is operated in the vacuum mode.