Plastic drive fastener

Details Plastic drive fastener Plastic drive fastener

1993-02-02

1994-04-26

Wilson, Neill R.

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

Headed fastener element

Having resilient securing structure on shank

411913, F16B 1900

Patent

active

053060989

ABSTRACT:
A one-piece plastic drive fastener comprises an enlarged head with a rigid cylindrical shank extending therefrom and terminating in a free end. Four circumferentially spaced axial rows of wing elements extend generally radially outwardly from the shank. The wing elements each have the shape of a segment of a thin walled truncated cone with a narrow first end joined to the cylindrical shank and a wider second end spaced outwardly of the shank and inclined toward the head portion. The wing members are freely flexible in the direction toward the head portion with the wing elements in each row being relatively uniformly spaced axially of the shank but axially offset from the wing elements in the next adjacent rows.

REFERENCES:
patent: 3494244 (1970-02-01), Wayland
patent: 4381633 (1983-05-01), MacLeod
patent: 4396329 (1983-08-01), Wollar
patent: 4704059 (1987-11-01), Nakama et al.
patent: 4762437 (1988-08-01), Mitomi
patent: 5011356 (1991-04-01), Fernandez
patent: 5039267 (1991-08-01), Wollar

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