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:
Jun. 02, 1992
Filed:
May. 07, 1990
Applicant:
Inventor:
Wolfgang Hentzschel, Filderstadt, DE;
Assignee:
Electrostar Schottle GmbH & Co., Reichenbach/Fils, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15409 ; 417151 ; 417197 ;
Abstract
A suction or blowing apparatus and/or pneumatic conveying apparatus for different types of dust and bulk material. The apparatus includes two tubes arranged one within the other, wherein propellant air is admitted to the inner tube. To increase the suction effect, the outer tube is also connected to a propellant air-generating device. The tubes are arranged concentrically within each other and form an annular injection nozzle.