发明名称 Magnetic hole former
摘要 An improved method and apparatus for attaching a hole former to a mold assembly for use in the formation of cast materials such as concrete and the like. The apparatus comprises a hole former assembly attached to a bracket. The bracket is held in a stationary position by a magnet assembly that is remotely located from the hole former. The magnet assembly is comprised of a plurality of magnets encased in a metal casing. An expendable blister pack can be provided to fit on the outside of the casing to facilitate removal of the magnetic assembly from the cast member.
申请公布号 US2005173612(A1) 申请公布日期 2005.08.11
申请号 US20040772559 申请日期 2004.02.05
申请人 SRACKANGAST JAMES V. 发明人 SRACKANGAST JAMES V.
分类号 B28B7/16;B28B7/28;(IPC1-7):B28B7/16 主分类号 B28B7/16
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