Patent ID: 8979453
Filing Date: 2015-03-17
Classification: F16B

Abstract:
1. A fastener, comprising: a core bolt having an elongated shank with a first end, a second end opposite the first end, a head located at the second end, and a pull portion located at the first end, the pull portion having a plurality of grooves; and a sleeve having an elongated body with a fiat end, a second end opposite the first end of the elongated body, an exterior surface extending from the first end of the elongated body to the second end of the elongated body, a head located at the first end of the elongated body, and a tapered notch formed within the exterior surface intermediate the first and second ends of the elongated body and defined by a tapered portion, wherein the core bolt is adapted to be installed within the sleeve such that the head of the core bolt is juxtaposed with the second end of the elongated body of the sleeve, wherein the fastener is adapted to be installed within a plurality of work pieces such that the head of the sleeve engages an accessible side of one of the plurality of work pieces, and the second end of the elongated body of the sleeve extends from a blind side of another of the plurality of work pieces, wherein during installation of the fastener within the plurality of work pieces, a bulb is formed on the elongated body of the sleeve, the bulb defining a portion of a bulbed portion which extends from the bulb to the second end of the elongated body of the sleeve, wherein when a selected axial force applied to the fastener is reached, the bulbed portion separates from the elongated body and thereafter engages the tapered portion axially and in a direction towards the first end of the elongated body, thereby increasing the diameter of the bulb, and wherein when the fastener is in an installed position, the bulb engages the blind side of the another of the plurality of work pieces.