Patent ID: 9163656
Filing Date: 2015-10-20
Classification: B64D,F16B

Abstract:
1. A lightning protection fastener assembly comprising: a fastener member having a shaft that penetrates a first member and a second member so as to fasten the second member to the first member that constitutes an airframe of an aircraft, the shaft protruding toward at least one of the sides of the first member and the second member; a cap, made of an insulating material, that is attached so as to cover the shaft of the fastener member that protrudes toward at least one of the sides of the first member and the second member; and a sealant, made of an insulating material, that is filled into the cap to seal a space between the cap and the fastener member so that the shaft of the fastener member is covered with the sealant, wherein the cap has an opening that accommodate the shaft of the fastener member, an end part of the cap on the opening side, the end part facing the first member or the second member, comprises a plane orthogonal to an axis line of the cap and a tapered face formed on an outer circumferential side of the plane; and wherein the sealant is filled between the tapered face and a surface of the first member, or between the tapered face and a surface of the second member.