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:
Oct. 13, 1998
Filed:
Apr. 25, 1997
Applicant:
Inventor:
Guido Greco, Northport, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241154 ; 241275 ;
Abstract
A solid material pulverizer using a vertical shaft has a plurality of bearings above a lower fixed bearing that are resiliently held in fixed mounts allowing the bearings to rise vertically against spring pressure as the shaft lengthens from thermal expansion. Impellers fixed to the shaft between the bearings hurl solid material against rings arranged around the impellers, and the rings have multi-sided interiors with ridges and grooves confronting the impeller and angled inward from bottom to top of each ring.