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:
Aug. 13, 2002
Filed:
Jul. 10, 2000
Applicant:
Inventor:
Maurice K. LeBegue, Bluefield, WV (US);
Assignee:
Eimco LLC, Bluefield, WV (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C 2/508 ;
U.S. Cl.
CPC ...
E21C 2/508 ;
Abstract
An extendable rotor arm for a mining machine includes a rotor arm having an end portion, a sleeve removably secured on at least part of the end portion, a rotor arm extension having an internal opening in which the sleeve and the end portion of the rotor arm are axially slidably received and nonrotatable, and a seal between an internal surface of the internal opening of the rotor arm extension and the sleeve. Methods of repairing an extendable rotor arm for a mining machine are also disclosed.