Invention Grant
- Patent Title: Drill bit
- Patent Title (中): 钻头
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Application No.: US11795029Application Date: 2006-01-16
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Publication No.: US07641004B2Publication Date: 2010-01-05
- Inventor: Paul-Philippe Lapointe
- Applicant: Paul-Philippe Lapointe
- Applicant Address: CA St. Laurent
- Assignee: Groupe Fordia Inc.
- Current Assignee: Groupe Fordia Inc.
- Current Assignee Address: CA St. Laurent
- International Application: PCT/CA2006/000053 WO 20060116
- International Announcement: WO2006/076795 WO 20060727
- Main IPC: E21B10/48
- IPC: E21B10/48

Abstract:
A bit for drilling a hole. The bit includes a support member, the support member having a passageway extending substantially longitudinally therethrough; a substantially annular crown defining a crown distal end and a crown proximal end, a radially inwardly located crown inner surface and a radially outwardly located crown outer surface, the crown extending from the support member; a slot extending between the crown inner and outer surfaces from the crown distal end substantially longitudinally towards the crown proximal end, the slot defining a slot first side wall, a substantially circumferentially opposed slot second side wall and a slot proximal wall extending therebetween substantially opposed the crown distal end; and a reinforcing member extending substantially circumferentially across the slot between the slot first and second walls; wherein the slot includes a slot proximal segment extending between the reinforcing member and the slot proximal wall and a slot distal segment extending between the reinforcing member and the crown distal end.
Public/Granted literature
- US20080066969A1 Bit For Drilling A Hole Public/Granted day:2008-03-20
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