发明名称 |
HARD MATERIAL IMPELLER AND METHODS AND APPARATUS FOR CONSTRUCTION |
摘要 |
Methods of producing impeller castings from very hard materials are disclosed in which the formation of a selectively configured core produces an impeller casting that does not need to be machined to receive the drive shaft and eliminates the need for employing a lead babbitt or soft insert, as is known in the prior art, to receive the drive shaft, thereby producing a hard material impeller for a centrifugal pump that is significantly less costly to produce and is environmentally safe. |
申请公布号 |
EP1620647(A2) |
申请公布日期 |
2006.02.01 |
申请号 |
EP20040750454 |
申请日期 |
2004.04.23 |
申请人 |
ENVIROTECH PUMPSYSTEMS, INC. |
发明人 |
SHAW, JAMES |
分类号 |
B63H1/26;B28B7/28;F04D29/02;F04D29/20;F04D29/22 |
主分类号 |
B63H1/26 |
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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