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.

Date of Patent:
Oct. 05, 1999

Filed:

Dec. 18, 1996
Applicant:
Inventors:

Fred M Austin, Eugene, OR (US);

Roy R Miller, Eugene, OR (US);

Brian K Clark, Eugene, OR (US);

Assignee:

Bulk Handling, Inc., Eugene, OR (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B07B / ;
U.S. Cl.
CPC ...
209672 ; 209667 ; 209353 ; 209673 ;
Abstract

A compound disc is used to eliminate a secondary slot normally formed between adjacent shafts of a material separation screen. The compound disc comprises a primary disc joined to an associated secondary disc. The primary disc and the secondary disc each have the same shape but the secondary disc has a smaller outside perimeter and is wider. The primary disc and associated secondary disc are formed from a unitary piece of rubber. The compound discs are interleaved with oppositely aligned compound discs on adjacent shafts. In other words, the large disc is positioned on a shaft to align with a smaller disc on an adjacent shaft. The oppositely aligned and alternating arrangement between the large discs and small discs reduces problems that exist in screens that use in-line multi-sided discs.


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