发明名称 Lifting gear and testing it
摘要 A lifting attachment for lifting a heavy load comprises a generally cylindrical member (7,30) which may be a post passing through a hole in the load, or a sleeve fitting over a post (6) fixed to the load. To retain a lifting sling, the member (7,30) has a radially projecting retaining flange (8), that extends circumferentially at least partly around it; the flange (8) has a curved shaped with wings (12) curving upwardly from its lowermost portion, so that an increasing amount of the flange (8) contacts the sling as the angle of approach of the sling to the sleeve becomes more acute. The flange (8) and member (7,30) may be a re-usable one-piece casting. Apparatus is also provided for test-loading the lifting attachment.
申请公布号 US4735450(A) 申请公布日期 1988.04.05
申请号 US19860928625 申请日期 1986.11.03
申请人 PMB SYSTEMS ENGINEERING, LIMITED 发明人 FERN, DEREK T.
分类号 B66C1/12;B66C1/66;(IPC1-7):B66C1/12 主分类号 B66C1/12
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