초록 ▼

A corrosion resistant angled head fastener is disclosed for use with at least two non-metallic panels. The panels defining a bore and a counterbore with the counterbore and a portion of the bore being in one panel and the bore extending through another panel. The fastener head has an end face with t

A corrosion resistant angled head fastener is disclosed for use with at least two non-metallic panels. The panels defining a bore and a counterbore with the counterbore and a portion of the bore being in one panel and the bore extending through another panel. The fastener head has an end face with two angled sections. The first section extends forwardly of the face of the head and the second section extends forwardly of the first second. The included angle of the taper of the second section is between about 100°and about 170°. The head section is configured to fit into the counterbore of the panel.

대표청구항 ▼

In combination with a composite workpiece having at least two panels and defining a bore and a counterbore, the counterbore and a portion of the bore located in one panel, another portion of the bore located in another panel, (a) a corrosion resistant fastener having an axially extending shank recei

In combination with a composite workpiece having at least two panels and defining a bore and a counterbore, the counterbore and a portion of the bore located in one panel, another portion of the bore located in another panel, (a) a corrosion resistant fastener having an axially extending shank received in and engageable with said bore and defining an axis, and the fastener having a flush countersink head, (b) the head having an end face, a first section located forwardly of said end face and a second forwardly tapered frusto-conical section located forwardly of the first section, the included angle taper angularity 2B of the second section being between 105°and about 170°, (c) the head first section having a side wall which has bearing engagement with a counterbore side wall of said workpiece to cooperate with bearing engagement of the shank with said workpiece bore to resist relative shear displacement of said panels, (d) the head first section side wall having taper angularity A within the range 15°to 0°, A being greater within said range as the taper angularity 2B of the second section is lower, within its range 105°to 170°, (e) said panels incorporating non-metallic filaments extending adjacent said bore portions, (f) the head first and second sections having heights H1 and H2 respectively, the ratio of H1 to H2 being within the range of about 1.0 to about 7.3, and said ratio decreasing within said range as 2B is lower within its range 105°to 170°, (g) said head end face being outwardly domed substantially completely across its diameter.