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公开(公告)号:US07698776B1
公开(公告)日:2010-04-20
申请号:US11416265
申请日:2006-05-01
申请人: John H. Lawson
发明人: John H. Lawson
IPC分类号: A47L13/50
摘要: A balanced cleaning apparatus that advantageously contains a carrying handle, a dust pan and a bucket wherein the dustpan and the bucket are carried at the two ends of the carrying handle in a balanced position.
摘要翻译: 一种平衡的清洁装置,其有利地包括携带手柄,防尘盘和铲斗,其中簸箕和铲斗在平衡位置处在承载手柄的两端承载。
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公开(公告)号:US1531463A
公开(公告)日:1925-03-31
申请号:US74643124
申请日:1924-10-28
申请人: JOHN H LAWSON
发明人: VINCENT P M
IPC分类号: E21B17/043
CPC分类号: E21B17/043 , Y10T403/50
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公开(公告)号:US4399890A
公开(公告)日:1983-08-23
申请号:US265407
申请日:1981-05-20
申请人: Leroy R. Bartels , John H. Lawson , Paul L. King
发明人: Leroy R. Bartels , John H. Lawson , Paul L. King
CPC分类号: E06C7/186 , A62B35/005 , A62B35/0068 , A62B35/04
摘要: A flexible cable safety system for a fixed ladder is mounted adjacent to and independent of the ladder. This arrangement is useful for ladders which are not designed to withstand the loads imposed when a safety system arrests the fall of a workman.
摘要翻译: 固定梯子的柔性电缆安全系统安装在梯子附近并独立于梯子。 这种安排对于不能承受安全系统阻止工人跌倒时施加的载荷的梯子是有用的。
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