Original document(5 pages)  中文版
    The gyrator includes casing guide pipe, and core and features its three-thread worm gear transmission. The inner side of the worm gear is meshes with the guide pipe and the worm is meshed to the driver. The drilling rod with bit in the lower part is connected via the core with the guide pipe. The driving force is transmitted via the worm gear to drive the drill and this has high power utilization, low manufacture cost and high efficiency.
Application Number
申请号		 02135399 Application Date
申请日		 2002.09.03
Title 名称 Gyrator
Publication Number
公开号		 1399057 Publication Date
公开日		 2003.02.26
Approval Pub. Date Granted Pub. Date
International Classification 分类号 E21B3/04
Applicant(s) Name
申请人		 Wang Weijun
Address 地址 272037
Inventor(s) Name 发明人
Attorney & Agent 代理人
More information 更  多  信  息


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