Invention Grant
- Patent Title: Breakable rock bolt
- Patent Title (中): 可破碎的岩栓
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Application No.: US12444918Application Date: 2007-10-11
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Publication No.: US08434970B2Publication Date: 2013-05-07
- Inventor: Timothy J. Gaudry , Peter H. Craig
- Applicant: Timothy J. Gaudry , Peter H. Craig
- Applicant Address: US PA Pittsburgh
- Assignee: FCI Holdings Delaware, Inc.
- Current Assignee: FCI Holdings Delaware, Inc.
- Current Assignee Address: US PA Pittsburgh
- Agency: The Webb Law Firm
- Priority: AU2006905824 20061019
- International Application: PCT/US2007/081077 WO 20071011
- International Announcement: WO2008/051728 WO 20080502
- Main IPC: E21D20/00
- IPC: E21D20/00
Abstract:
A rock bolt is disclosed, which includes first and second ends, a shaft extending between the ends, the shaft incorporating a hollow metal rod including at least one breaking zone and wherein the shaft is arranged to preferentially break in the breaking zone when impact loading is applied to the shaft.
Public/Granted literature
- US20100028088A1 BREAKABLE ROCK BOLT Public/Granted day:2010-02-04
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