Abstract A fastener for joining a laminated panel such as plywood to a structural member and to provide a moisture proof connection therebetween. The fastener includes a ferrule having a hollow shank portion with a transverse flange portion extending from one of the ends. The shank portion is received in aligned holes in the panel and structural member so that the flange portion seats on margins of the hole in the structural member. A rivet or softer material than the ferrule with a head at one of its ends is passed through the ferrule and its opposite end is swaged over the outwardly turned flange of the ferrule to make a flush connection. The hollow shank of the ferrule prevents the shank of the rivet of softer material from upsetting into the relatively soft interior of the panel.
A rivet fastener in combination with a structural member and a stress panel having opposed outer layers of waterproof material and a relatively soft core material for providing a moisture seal with the member and stress panel while maintaining the core material free of physical distortion, both said stress panel and said structural member having substantially the same size aligned holes therein, said structural member having opposed flanges for receiving said stress panel therebetween, said fastener including a hollow steel sleeve member of substantially the same outer diameter as said aligned holes and extending therethrough, said sleeve member including a flange at one of its ends extending transverse to the axis of said member and engaging an outer surface of one flange of said structural member, an aluminum rivet having a shank portion extending within said sleeve member and including an enlarged end portion swaged into flush engagement with said flange at one end of said hollow sleeve member, the axial length of the sleeve member being less than the sum of the thicknesses of said panel and said structural member, and a head on said rivet adjacent the opposite end of said sleeve member engaging an outer surface of said opposed flange of said structural member and being axially spaced from said sleeve member, said inner surfaces of said flanges of said structural member forming a substantially waterproof seal with said opposed waterproof layers of said stress panel, said sleeve member serving as a rigid barrier between said rivet and said core material of said panel to prevent physical distortion of said core.
Claim 2
Dependent Claim
264 words
A rivet fastener in combination with a structural member and a stress panel having opposed outer layers of waterproof material and a relatively soft core material for providing a moisture seal with the member and stress panel while maintaining the core material free of physical distortion, both said stress panel and said structural member having substantially the same size aligned holes therein, said structural member having opposed flanges for receiving said stress panel therebetween, said fastener including a hollow steel sleeve member of substantially the same outer diameter as said aligned holes and extending therethrough, said sleeve member including a flange at one of its ends extending transverse to the axis of said member and engaging an outer surface of one flange of said structural member, an aluminum rivet having a shank portion extending within said sleeve member and including an enlarged end portion swaged into flush engagement with said flange at one end of said hollow sleeve member, the axial length of the sleeve member being less than the sum of the thicknesses of said panel and said structural member, and a head on said rivet adjacent the opposite end of said sleeve member engaging an outer surface of said opposed flange of said structural member and being axially spaced from said sleeve member, said inner surfaces of said flanges of said structural member forming a substantially waterproof seal with said opposed waterproof layers of said stress panel, said sleeve member serving as a rigid barrier between said rivet and said core material of said panel to prevent physical distortion of said core.