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:
Dec. 05, 1989
Filed:
Jan. 17, 1989
Applicant:
Inventor:
Andy L Thompson, Courtland, KS (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B81D / ; B65G / ;
U.S. Cl.
CPC ...
55290 ; 55337 ; 55432 ; 554591 ; 55467 ; 406 67 ; 406109 ; 406173 ;
Abstract
A rotary screen assembly for a pneumatic grain handling device is described which is comprised of a perforated cylindrical screen member rotatably driven by a propeller means which is placed in the airstream of the device. The screen assembly includes a cut-off plate positioned at the bottom inside surface of the screen member for interupting airflow through a portion of the screen member thereby creating a continuous cleaning action of the screen assembly. The screen assembly is particularly useful for preventing abrasive airborne particles from entering into and damaging the blower components.