Invention Application
- Patent Title: Rotary cutting bit having spark suppression sleeve
- Patent Title (中): 旋转切割头具有火花抑制套筒
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Application No.: US10845556Application Date: 2004-05-14
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Publication No.: US20050212345A1Publication Date: 2005-09-29
- Inventor: Keith Sleep , Steven Weaver
- Applicant: Keith Sleep , Steven Weaver
- Applicant Address: SE Sandviken
- Assignee: SANDVIK AB
- Current Assignee: SANDVIK AB
- Current Assignee Address: SE Sandviken
- Priority: AU2004.201284 20040326
- Main IPC: E21C25/14
- IPC: E21C25/14 ; E21C35/183 ; E21C35/197 ; E21F5/00

Abstract:
A cutting pick includes an elongate shank, a cutting tip fixed to one end of the shank to project from that end and which is of a material that is harder than the material of the shank, and an annular sleeve which is attached about the shank adjacent the cutting tip. The sleeve is of a material (e.g., tungsten carbide) which is harder than the material of the shank and which has a lower propensity for incendive spark production during a cutting operation than the material of the shank. The sleeve includes a plurality of annular sleeve portions which are attached about the shank immediately adjacent to each other.
Public/Granted literature
- US07172256B2 Rotary cutting bit having spark suppression sleeve Public/Granted day:2007-02-06
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