Abstract: An article of cookware is assembled by the rivet attachment of a handle. The rivets are simultaneously attached to both the cookware vessel and the handle. The co-aligned holes for receiving the rivet in the wall of the cooking vessel and the handle flange are bevel such that exterior of the rivet is relatively flush with the interior of the cookware article and the exterior of the handle flange. Deformation of the rivet head also deforms the beveled edges of the through hole in the cookware article, locking it with the corresponding portion of the handle flange through hole.

Abstract: An article of cookware is assembled by the riveted attachment of a handle. Novel rivets are first attached from the interior of the cookware article via a flush hole such that the deformation of the cookware article around the rivet locks the rivet to the cookware article yet leaves the rivet head flush with the interior surface of the cookware article. The handle is subsequently attached by deforming the opposite end of the rivet.

Abstract: A trampoline provides higher performance and greater shock absorption capability by utilizing pairs of springs to connect the rebounding mat to the supporting frame. The springs in each pair are coupled to a common junction on the periphery of the rebounding mat, being disposed vertically with respect to each other. The upper spring in each pair is directly connected to the rebounding mat and the trampoline frame to initially to tension the mat in the equilibrium position. The lower spring in each pair is coupled to the frame and then to rebounding mat via a linkage arm such that it comes substantially under tension only as the corresponding upper spring is stretched. Depending on the level of impact force on the trampoline mat both springs extend, such that their combined stored energy propels the user upward on the return bounce. However, as each spring pair engages in stages the shock of the users initially landing is gradually absorbed.