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. 11, 2012
Filed:
Oct. 09, 2008
Hagen W. Dost, Chicago, IL (US);
Javier I. Sandoval, Schaumburg, IL (US);
Patrick M. Mcauliffe, Chicago, IL (US);
Creighton W. Nachtigall, Chicago, IL (US);
Kenneth C. Osberg, Lake in the Hills, IL (US);
Hagen W. Dost, Chicago, IL (US);
Javier I. Sandoval, Schaumburg, IL (US);
Patrick M. McAuliffe, Chicago, IL (US);
Creighton W. Nachtigall, Chicago, IL (US);
Kenneth C. Osberg, Lake in the Hills, IL (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A bit including a shaft defining an axis about which the bit is configured to be rotated. The bit further includes a blade having a first end attached to the shaft and an opposite second end, the blade further having (i) a first blade portion including a first shoulder defining a first cutting edge portion at the second end of the blade, and (ii) a second blade portion including a second shoulder defining a second cutting edge portion at the second end of the blade. The bit additionally includes a frusto-conically-shaped tip portion having an apex and being attached to the second end of the blade. The frusto-conically-shaped tip portion includes threads extending from the apex to a location adjacent to the first cutting edge portion and the second cutting edge portion.