Shearing fastener for sealing a fastener hold
First Claim
1. A shearing fastener for sealing a fastener hole, comprising:
- a plug having an upper surface and a threaded outer surface;
a shank having an upper end, a lower end, and a diameter;
a transition section along the lower end of the shank that tapers inwardly and intersects the upper surface of the plug at a neck; and
a fastener head disposed along the upper end of the shank,wherein the plug has an outer diameter that is greater than the diameter of the shank, andwherein the upper surface of the plug further includes a recess, and the transition section intersects the plug below an upper extent of the plug.
1 Assignment
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Accused Products
Abstract
A shearing fastener for sealing a fastener hole in a work piece includes a shank, a plug, and a fastener head. The fastener head is disposed along the upper end of the shank, while the lower end of the shank further includes a transition section that tapers inward and intersects with an upper surface of the plug at a neck. The plug has a threaded outer surface and an outer diameter greater than the shank. The plug engages the threaded bore of the fastener hole when inserted therein. The shank is configured to shear across the neck and separate the shank from the plug when the fastener head is torqued above a threshold torque. The plug is retained within the threaded bore of the fastener hole to seal the lower end of the fastener hole, forming a repaired work piece.
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Citations
16 Claims
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1. A shearing fastener for sealing a fastener hole, comprising:
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a plug having an upper surface and a threaded outer surface; a shank having an upper end, a lower end, and a diameter; a transition section along the lower end of the shank that tapers inwardly and intersects the upper surface of the plug at a neck; and a fastener head disposed along the upper end of the shank, wherein the plug has an outer diameter that is greater than the diameter of the shank, and wherein the upper surface of the plug further includes a recess, and the transition section intersects the plug below an upper extent of the plug. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A shearing fastener for sealing a fastener hole, comprising:
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a plug having an upper surface and a threaded outer surface; a shank having an upper end, a lower end, and a diameter; a transition section along the lower end of the shank that tapers inwardly and intersects the upper surface of the plug at a neck; and a fastener head disposed along the upper end of the shank, wherein the plug has an outer diameter that is greater than the diameter of the shank, wherein the upper surface of the plug further includes a recess, and the transition section intersects the plug below an upper extent of the plug, wherein the plug is configured to engage female threads of a fastener hole, and the shank is configured to shear and form a fracture surface across the neck to separate the shank from the plug when the fastener head is torqued above a threshold torque, and wherein the fracture surface being below the upper extent of the plug. - View Dependent Claims (8, 9, 10, 11)
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12. A shearing fastener for sealing a fastener hole, comprising:
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a plug having an upper surface and a threaded outer surface; a shank having an upper end, a lower end, and a diameter; a transition section along the lower end of the shank that tapers inwardly and intersects the upper surface of the plug at a neck; a fastener head disposed along the upper end of the shank; and a radius extending around a periphery of the neck at the intersection between the transition section and the upper surface of the plug, wherein the plug has an outer diameter that is greater than the diameter of the shank, and wherein the upper surface of the plug including a recess extending around the periphery of the neck such that at least a portion of the neck is disposed below an upper extent of the plug, the recess including an angled surface extending downward from the upper extent of the plug to the radius. - View Dependent Claims (13, 14, 15, 16)
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Specification