发明名称 |
Method and apparatuses for pre-screening |
摘要 |
A vibratory screening machine includes a primary screening area and a pre-screening assembly including a frame and screen assemblies. The screen assemblies are secured to the frame and form a pre-screening surface. The frame is attached to the vibratory screening machine such that the concave pre-screening surface is above the primary screening area.
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申请公布号 |
US8439203(B2) |
申请公布日期 |
2013.05.14 |
申请号 |
US20080051658 |
申请日期 |
2008.03.19 |
申请人 |
WOJCIECHOWSKI KEITH F.;NEWMAN CHRISTIAN;DERRICK CORPORATION |
发明人 |
WOJCIECHOWSKI KEITH F.;NEWMAN CHRISTIAN |
分类号 |
B07B1/49 |
主分类号 |
B07B1/49 |
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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