发明名称 Floating rings sling
摘要 A circular sling with at least one floating ring used to lift and move objects, such as logs and poles. Preferably, two rings located at opposite ends of the circular sling are used to pull the circle taught and create a type of double strap sling. The present sling can be used in all well known lifting techniques that traditionally employ a single strap sling as well as additional techniques made possible by the present circular sling. Particular benefits are provided when the present sling is used in a new modified double basket lifting method. The sling can be made of a man made webbing and the rings are preferably made of a metal or metal alloy. Each ring has an associated stress ball that is a solid ball used in a simple stress test. When a ring is in good working condition the stress ball passes freely through the middle of the ring. When the sling has been over stressed the ring warps slightly inward and the stress ball can no longer pass through the middle of the ring.
申请公布号 US6447035(B1) 申请公布日期 2002.09.10
申请号 US20010884279 申请日期 2001.06.20
申请人 KOHOUT BERNARD J. 发明人 KOHOUT BERNARD J.
分类号 B66C1/18;(IPC1-7):B66C1/12 主分类号 B66C1/18
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