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:
Feb. 13, 2007
Filed:
May. 10, 2005
Applicants:
Reinhard Neuper, Judenburg, AT;
Ralf Grief, Zeltweg, AT;
Inventors:
Reinhard Neuper, Judenburg, AT;
Ralf Grief, Zeltweg, AT;
Assignee:
Voest-Alpine Bergtechnik Gesellschaft m.b.H., Zeltweg, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C 25/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a hewing or cutting roll including a central roll part and at least one lateral roll part telescopically extractable in the axial direction of the roll, wherein the central roll part and the extractable roll part have each a connection site for a hydraulic cylinder piston unit, the hydraulic cylinder piston unit is arranged to be pivotable relative to the central roll part and/or the extractable roll part about at least two axes and, in particular, universally.