Invention Grant
- Patent Title: Bi-steel percussive drill rod
- Patent Title (中): 双钢冲击钻杆
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Application No.: US12427562Application Date: 2009-04-21
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Publication No.: US07900719B2Publication Date: 2011-03-08
- Inventor: Jing James Yao
- Applicant: Jing James Yao
- Applicant Address: US UT South Jordan
- Assignee: Longyear TM, Inc.
- Current Assignee: Longyear TM, Inc.
- Current Assignee Address: US UT South Jordan
- Agency: Workman Nydegger
- Main IPC: E21B17/20
- IPC: E21B17/20
Abstract:
A drill rod includes a first end section, a mid-section, wherein the first end section and the mid-section are connected and wherein the first end section is manufactured using different steel than is used for the mid-section. Such a configuration can reduce the costs associated with forming a drill rod while maintaining the functionality of such a drill rod.
Public/Granted literature
- US20090266615A1 BI-STEEL PERCUSSIVE DRILL ROD Public/Granted day:2009-10-29
Information query
