发明名称 FEED MECHANISM FOR DRILLING SYSTEMS
摘要 <p>591783 A cartridge feed screw nut (200) includes a body having a tubular threaded opening defined therein and having side portions. The side portions include a plurality of lateral surfaces (260A, 260B) and a plurality of end surfaces (270A, 270B). The lateral surfaces and the end surfaces form a profile shaped to prevent rotation of the cartridge feed screw nut relative to a front washer cylinder (220) through engagement between at least one of the lateral surfaces or the end surfaces with the front washer cylinder. A pin hole extends through the body from the first lateral surface (260A) to the second lateral surface (260B), the pin hole being spaced from the tubular threaded opening of the body and being generally transverse to the longitudinal axis of the tubular threaded opening of the body, the pin hole being adapted to receive a locking pin (230) such that the cartridge feed screw nut is secured in place relative to the front cylinder washer.</p>
申请公布号 NZ591783(A) 申请公布日期 2013.09.27
申请号 NZ20080591783 申请日期 2008.12.23
申请人 LONGYEAR TM, INC. 发明人 ROBERTS, NEIL, JAMES
分类号 E21B7/02;E21B3/02;E21B15/04;E21B19/081 主分类号 E21B7/02
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