发明名称 Manhole cover lift
摘要 An apparatus for moving a manhole cover comprising a lever having a first lever arm pivotally connected to a second lever arm by a hinge for movement between a collapsed position, wherein the first lever arm is substantially parallel to the second lever arm, and a plurality of operative positions, wherein the first lever arm extends at a non-parallel angle with respect to the second lever arm. A linkage is connected to an engaging end of the lever, and at least one magnet is connected to the linkage and engageable with the manhole cover.
申请公布号 US7503743(B1) 申请公布日期 2009.03.17
申请号 US20060582724 申请日期 2006.10.18
申请人 INDUSTRIAL MAGNETICS, INC. 发明人 FRIEDRICH PETER
分类号 B66F3/00 主分类号 B66F3/00
代理机构 代理人
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