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. 17, 2021
Filed:
Mar. 30, 2018
Applicant:
Sandvik Intellectual Property Ab, Sandviken, SE;
Inventors:
Luis Garcia, Zeltweg, AT;
Guenther Staber, Murau, AT;
Assignee:
SANDVIK INTELLECTUAL PROPERTY AB, Sandviken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C 25/18 (2006.01); E21D 9/10 (2006.01); E21D 9/11 (2006.01);
U.S. Cl.
CPC ...
E21D 9/104 (2013.01); E21C 25/18 (2013.01); E21D 9/117 (2013.01);
Abstract
A cutter for a cutting unit used in cutting apparatus suitable for creating tunnels or subterranean roadways. The cutter includes a disc body having an underside, an upper side arranged substantially opposite to the underside, and a radially peripheral part. A plurality of buttons for abrading rock are mounted in the radially peripheral part of the disc body and protrude outwardly therefrom to engage rock during an undercutting operation, wherein at least some of the buttons have a cutting part having a dome-shaped cutting surface.