| 摘要 |
<p>1514446 Fasteners ILLINOIS TOOL WORKS Inc 22 Feb 1977 [23 Feb 1976] 07302/77 Heading F2H A fastener for clamping apertured workpieces together when there is access from only one side comprises a threaded member 12, a sleeve 18 tapered and provided with ribs 30 at one end, and an internally-threaded, slotted, expansion member 40, the arrangement being such that, in use, the fastener is inserted through apertures 64 in workpieces 60, 62 and clamping is effected by rotating the member 12 while restraining sleeve 18 from rotation, this causing expansion member 40 to be drawn upwardly and expanded, the ribs 30 on the sleeve interacting with slots 48 in the expansion member to prevent relative rotation therebetween.</p> |
