Reduced obstruction self-sealing fasteners for multi-layer panel

Details Reduced obstruction self-sealing fasteners for multi-layer panel Reduced obstruction self-sealing fasteners for multi-layer panel

1992-06-09

1993-11-16

Reese, Randolph A.

Joints and connections

Having a joining piece extending through aligned openings in...

403 2, 411399, F16B 3100

Patent

active

052617599

ABSTRACT:
A fastener system for securing a multi-layer panel having a first surface adapted to be secured to a substructure, a second surface awash in a fluid flowing thereacross, and a plurality of spaced fastener-receiving holes arranged in a predetermined array in the second surface. Each fastener includes a threaded shank having a diameter smaller than any of the fastener-receiving holes, a load-bearing flange located adjacent the shank having a diameter greater than the shank diameter for pressing the first surface of the panel against the substructure, an unthreaded shank extending away from the load-bearing flange and having a diameter smaller than the threaded shank diameter, and a second flange having a diameter greater than the diameter of the load-bearing flange. The second flange is located on the side of the unthreaded shank opposite the load-bearing flange, and functions to seat against a recessed region of the second surface of the panel. A surface on the second flange adjacent the unthreaded shank engages with and seals against a correspondingly configured recess in the panel second surface.

REFERENCES:
patent: 3434262 (1969-03-01), Lawrence
patent: 3564798 (1971-02-01), Darby et al.
patent: 3606416 (1971-09-01), Hatter et al.

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