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:
Feb. 18, 1997
Filed:
Nov. 21, 1995
Applicant:
Inventors:
David E O'Ryan, Clarkston, MI (US);
Richard D Burke, Amherst, OH (US);
Assignee:
ABB Flexible Automation Inc., New Berlin, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F / ;
U.S. Cl.
CPC ...
366107 ; 34582 ;
Abstract
A powder hopper with an internal air assist is provided with at least one vertically extending tube having a plurality of air outlet ports which are utilized in agitating the powder within a powder chamber. According to a first embodiment, the vertically extending tubes are rotated about a central axis. According to a second embodiment, the vertically extending tube is divided up into a plurality of zones which are sequentially provided with pulses of compressed air, thereby providing an equivalent air agitation rotating action without the requirement of rotating the vertically extending tube.