Collapsible fastener with plastic sleeve

Details Collapsible fastener with plastic sleeve Collapsible fastener with plastic sleeve

1981-05-18

1983-11-22

Smith, Gary L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Bulged by axially contracting ends

411542, 411908, F16B 1304

Patent

active

044165722

ABSTRACT:
A collapsible fastener comprises a tubular plastic having a head on one end for bearing against one surface of the work. There is an internally threaded tail portion at the shank end of the sleeve. The shank is slotted to define strips which are notched internally and intermediate the ends. The slots increase in width from their ends to the area of the notches. A screw extends through the sleeve and is devoid of threads intermediate its ends to prevent overtorquing. A radially tapered annulus is positioned atop the sleeve for sealable engagement with the screw head in the assembled condition.

REFERENCES:
patent: 3316796 (1967-05-01), Young
patent: 4274324 (1981-06-01), Giannuzzi
patent: 4280390 (1981-07-01), Murray

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