发明名称 Bore path alignment system
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.
申请公布号 US2002138994(A1) 申请公布日期 2002.10.03
申请号 US20010825095 申请日期 2001.04.02
申请人 JOHNSON CLIFFORD C. 发明人 JOHNSON CLIFFORD C.
分类号 G01C15/02;(IPC1-7):G01C5/00 主分类号 G01C15/02
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