发明名称 |
TOP DRIVE DRILLING SYSTEM AND OTHER APPLICATIONS USING A LOW SPEED DIRECT DRIVE AC MOTOR |
摘要 |
A low speed alternating current motor having motor shaft speeds of about (300) is provided, and such motor has application in numerous industries and devices, such as, for example, in top drive drilling systems. Because of the low shaft speed, mechanical speed reduction equipment may not be necessary. In addition, the motor shaft may be hollow to facilitate the flow of fluid, such as, for example, drilling mud. |
申请公布号 |
EP1941598(A1) |
申请公布日期 |
2008.07.09 |
申请号 |
EP20050804199 |
申请日期 |
2005.10.03 |
申请人 |
LETOURNEAU TECHNOLOGIES DRILLING SYSTEMS, INC. |
发明人 |
WILLIAMS, KEVIN R.;HOWARD, AL;MCNEASE, DANIEL F.;HARRIS, RUDY;BRADLEY, RICHARD |
分类号 |
H02K1/32;E21B4/04;H02K1/30 |
主分类号 |
H02K1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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