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:
Sep. 15, 1992
Filed:
Jul. 25, 1991
Floyd E Buschbom, Long Lake, MN (US);
Van Dale, Inc., Long Lake, MN (US);
Abstract
An impeller assembly having a housing supporting a rotatable impeller. The housing has a bottom entrance opening and a top exit opening separated by a curved back wall. A liner of low friction and abrasion resistant plastic material located adjacent a portion of the inside of the back wall prevents material buildup on the back wall. The liner is removeably mounted on the housing so that it can be replaced without taking the housing apart. The impeller has a plurality of pivoted paddle assemblies. Each paddle assembly has a body carrying a generally U-shaped liner of low friction and abrasion resistant material to minimize the collection of material on the paddle assemblies. The housing includes a knife adjacent the entrance opening. The body of the impeller assembly has a transverse lip that moves in close relation relative to the knife to cut material.