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:
Mar. 26, 2013
Filed:
Oct. 26, 2007
Steven Weaver, Fletcher, AU;
Darren Webb, Floraville, AU;
John Horsch, Wallsend, AU;
Matthew Kenny, Hamilton, AU;
Steven Weaver, Fletcher, AU;
Darren Webb, Floraville, AU;
John Horsch, Wallsend, AU;
Matthew Kenny, Hamilton, AU;
Sandvik Intellectual Property AB, Sandviken, SE;
Abstract
A drilling tool incorporating first and second ends, a shaft extending between the ends. The first end has a drill bit to penetrate rock. The drill bit and the shaft have complementary threads. The drill bit and the shaft comprise a relative rotation stop means that ensures that the drill bit remains loose during drilling in a first direction. The invention further relates to a self drilling rock bolt, a drill bit, drill shaft and shaft coupling, an anchoring device, and an end coupling per se.