发明授权
- 专利标题: Bore path alignment system
- 专利标题(中): 孔径对准系统
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申请号: US09825095申请日: 2001-04-02
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公开(公告)号: US06487781B2公开(公告)日: 2002-12-03
- 发明人: Clifford C. Johnson
- 申请人: Clifford C. Johnson
- 主分类号: G01C500
- IPC分类号: G01C500
摘要:
A bore path alignment system for accurately determining a desired bore pitch for a ground-boring device. The bore path alignment system includes a first pole, a first tube adjustably positioned upon the first tube, a guide tube with a pitch instrument pivotally attached to the first tube, a second pole, and a second tube including a spotter strip adjustably positioned upon the first tube. The user positions the first pole into the ground surface where boring is to begin and the second pole above a location where a specific depth is required. The user positions the second tube containing the spotter strip according to the depth in the second location. The user then adjusts the angle of the guide tube until the spotter strip is aligned thereby allowing the user to determine the required boring pitch by the pitch instrument.
公开/授权文献
- US20020138994A1 Bore path alignment system 公开/授权日:2002-10-03
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