Fastening element assembly with a deformable sleeve

Details Fastening element assembly with a deformable sleeve Fastening element assembly with a deformable sleeve

1988-12-19

1990-04-10

Lindsey, Rodney M.

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

Impact driven fastener, e.g., nail, spike, tack, etc.

411441, F16B 1500

Patent

active

049155610

ABSTRACT:
A fastening element assembly is made up of a nail-like fastening element and a deformable sleeve displaceably secured on the fastening element shank. The assembly is used to secure sheet metal plates to a base material of variable strength. At its leading end the sleeve has an outwardly extending flange. When the assembly is driven into a receiving material or base, the sleeve is displaced in the rearward direction along the shank toward the trailing head on the fastening element. The shank widens conically toward the head. As the sleeve is displaced rearwardly, it is radially expanded. When the trailing end of the sleeve contacts the head, the sleeve collapses or is deformed in the axial direction in the manner of an accordian. Excess energy applied to the assembly during the driving step is converted into deformation work acting on the sleeve.

REFERENCES:
patent: 2660084 (1953-11-01), Dewman
patent: 3315720 (1967-04-01), Gutshall
patent: 3324542 (1967-06-01), Hilti
patent: 3377903 (1968-04-01), Korte
patent: 3382751 (1968-05-01), Kopf
patent: 3921495 (1975-11-01), Braum et al.
patent: 3978759 (1976-09-01), Bakoledis
patent: 4102238 (1978-07-01), Thurner
patent: 4802802 (1989-02-01), Thurner

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