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. 29, 1989
Filed:
Feb. 29, 1988
Applicant:
Inventors:
James W Kohl, Eagan, MN (US);
Mark D Belcher, Burnsville, MN (US);
Assignee:
Donaldson Company, Inc., Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
981154 ; 285184 ; 285226 ;
Abstract
Fumes are drawn by a vacuum source from a scoop through conduit. The conduit provides its own structure with rigid tubes and which are held with respect to one another, a mounting collar and the scoop by joint attaching assemblies and. In this way, the fume exhauster requires minimal structure. Also, joint assemblies minimize flow resistance since they are located along inside conduit curvatures.
Published as: