| 摘要 |
An improved safety hoist ring assembly. Fewer and simpler parts are used in the assembly, as compared with the prior art safety hoist rings. It can be easily assembled and disassembled without the use of tools. The assembly includes a lift stud member, a bushing member, a retainer element, a U-bar member and a clevis pin element. The cylindrical bearing surface of the lift stud member is axially received in and retained within the central bore of the bushing member by the retainer element. The external diameter of the retainer element is less than the external diameter of the bushing member. The retainer element is thus sized to pass through any bore in an object to which the bushing member is to be attached. The external surface of the bushing member is provided with some mounting mechanism, such as a thread, which mounts the bushing to an object which is to be lifted. The lateral movement of the lift stud member is restrained by seating a radial flange of the lift stud member into a circular recess in the mating surface of the bushing member. The U-bar member includes two opposed legs having bores that are in axial alignment. The clevis pin element engages the bores of the opposed legs and a load bearing bore in the enlarged end, thereby pivotally attaching the U-bar member to the lift stud member.
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