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. 18, 1977
Filed:
Sep. 25, 1975
Applicant:
Inventor:
William F Fisher, Walpole, MA (US);
Assignee:
Bird Machine Company, Inc., South Walpole, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K / ; B23P / ; B23P / ;
U.S. Cl.
CPC ...
2915 / ; 29460 ; 198658 ; 198676 ; 228175 ; 228176 ; 2392185 ; 302 50 ; 427423 ;
Abstract
A helical bladed conveyor for use in a centrifuge is provided with a wear-resistant outer foward edge by securing to the blade a thin band of metal having an upstanding marginal portion extending beyond the forward face and forming with it a cavity which is filled to the desired depth by fusing a wear-resistant material in place.