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:
Jan. 30, 1990
Filed:
Oct. 31, 1988
John C Vendelin, Springfield, OR (US);
Frederick J Winegar, Springfield, OR (US);
Cedarapids, Inc., Cedar Rapids, IA (US);
Abstract
A rotor for a vertical shaft impact crusher features a unique protector for the trailing edge of each material exit portal of the crusher. The portal protector includes upper and lower 'wings' between which is a channel. The wings and channel trail outwardly from the portal and along the periphery of the rotor to create a pair of trailing vortices which confine the exiting material to the periphery of the rotor in order to prevent the material from also spilling over the upper and lower edges of the portal and onto the top of the rotor, thus reducing wear. The peripheral wall of the rotor is protected by symmetrical shell segments having upper and lower lips. Each of the latter is engaged in turn by a symmetrical, segmented rim liner fashioned so that a shell segment can be replaced or moved to even-out wear simply by removing one of its associated segmented rim liners.