专利名称：Method for adjusting screw jacks for
supporting stringers and joists inconstruction of a building
发明人：John Michael Burke申请号：US08/837323申请日：19970411公开号：US06055730A公开日：20000502
摘要：A tool and method provide a labor saving procedure for positioning the collarsof screw jacks on base frames at desired heights at construction heights. A conventionalelectric motor driven drill is coupled to the screw jack pipe by the tool to rotate thepipes for positioning the collar at desired levels on the pipe.
申请人：BURKE; JOHN MICHAEL
代理机构：Hill & Simpson
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