发明名称 ROTOR FOR AN ECCENTRIC SCREW PUMP OR A SUBSURFACE DRILLING MOTOR
摘要 A rotor (4) for an eccentric screw pump or a subsurface drilling motor consists of a straight, essentially cylindrical core element (21), onto which a shell (22) is forged by a cold-forging process. The forging gives the shell (22) the helical external form required for eccentric screw pumps (1). The rotor (4) described can be produced by non-cutting shaping, which is of considerable advantage in particular in the case of large rotor dimensions, since no waste material is produced.
申请公布号 CA2350578(C) 申请公布日期 2008.05.06
申请号 CA19992350578 申请日期 1999.09.21
申请人 WILHELM KAECHELE GMBH ELASTOMERTECHNIK 发明人 KACHELE, BRUNO
分类号 F04C2/107;B21C37/15;F04C2/08 主分类号 F04C2/107
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