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. 25, 2015
Filed:
Aug. 31, 2012
Applicants:
Arno Glaser, Schaanwald, LI;
Steven Moseley, Nenzing-Gurtis, AT;
Inventors:
Arno Glaser, Schaanwald, LI;
Steven Moseley, Nenzing-Gurtis, AT;
Assignee:
HILTI AKTIENGESELLSCHAFT, , LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B 51/02 (2006.01); B25D 17/02 (2006.01); B22F 7/04 (2006.01); B23B 51/00 (2006.01); B22F 7/06 (2006.01); B23P 15/32 (2006.01); C22C 29/08 (2006.01); C22C 19/07 (2006.01); C22C 38/08 (2006.01); C22C 38/10 (2006.01);
U.S. Cl.
CPC ...
B23B 51/02 (2013.01); B22F 7/04 (2013.01); B22F 7/062 (2013.01); B23B 51/00 (2013.01); B23P 15/32 (2013.01); B25D 17/02 (2013.01); C22C 19/07 (2013.01); C22C 29/08 (2013.01); C22C 38/08 (2013.01); C22C 38/105 (2013.01); B23B 2222/28 (2013.01); B23B 2222/41 (2013.01); B23C 2228/49 (2013.01); Y10T 408/78 (2015.01); Y10T 408/89 (2015.01);
Abstract
A drill includes a drill bit, an intermediate part, and a shaft. The drill bit is made from a sintered carbon-containing hard metal. The intermediate part is made from steel and arranged along an axis between the drill bit and the shaft. An activity of carbon in the steel of the intermediate part is greater at a temperature ranging from 1100° C. to 1450° C. than an activity of carbon in the sintered hard metal at the temperature.