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. 23, 2003
Filed:
Sep. 19, 2001
Applicant:
Inventor:
Zenon Wasyleczko, Kowice, PL;
Assignee:
Boart Longyear GmbH & Co. KG, Burghaun, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C 3/5197 ;
U.S. Cl.
CPC ...
E21C 3/5197 ;
Abstract
A chisel arrangement for mining machines includes a rotatable chisel including a working part, a supporting flange arranged adjacent to the working part, and a shaft arranged adjacent the supporting flange, the shaft having a lug and an end flange at an and opposite from the supporting flange. A chisel holder is arranged around apportion of the shaft, and a friction ring is arranged around the lug and at least partially against the chisel holder. The end flange of the shaft, a portion of the lug and a portion of the friction ring are arranged exterior of the chisel holder.