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:
Apr. 17, 2012
Filed:
Oct. 22, 2008
Patrick A. Bear, Richfield, MN (US);
Matthew A. Cottrell, Woodbury, MN (US);
Michael L. Linsdau, Hoffman Estates, IL (US);
David G. Vensland, Champlin, MN (US);
Patrick A. Bear, Richfield, MN (US);
Matthew A. Cottrell, Woodbury, MN (US);
Michael L. Linsdau, Hoffman Estates, IL (US);
David G. Vensland, Champlin, MN (US);
Sta-Rite Industries, LLC, Delavan, WI (US);
Abstract
Embodiments of the invention provide an impeller assembly having a flexible impeller and a method of replacing a removable drive mechanism. The impeller assembly includes an impeller having an outer portion defining a substantially cylindrical shape, at least one flexible blade extending radially outward from the outer portion, and a first bore extending a first axial length. The impeller assembly also includes a tubular insert supported at least partially within the first bore. The tubular insert has a second bore defining a substantially cylindrical shape with a first radial distance from an axis passing through the center of the impeller, and a key portion radially extending from the second bore. The key portion defines a second radial distance from the axis larger than the first radial distance.