Patent ID: 8517649
Filing Date: 2013-08-27
Classification: F16B,Y10T

Abstract:
1. A blind clamp comprising: a core bolt comprising a first threaded portion on a first end and a bolt head on a second end; an expanding nut comprising a second threaded portion, a end portion and a bulbing region between said second threaded and end portions of said expanding nut, wherein said bulbing region bulbs to form a flange upon application of a first compressive load between said second threaded portion and said end portion of said expanding nut and wherein said second threaded portion is threadingly engaged with said first threaded portion; a shank positioned between said expanding nut and said bolt head; a shear member that prevents said shank from advancing along said core bolt until a second compressive load is exerted, wherein said second compressive load is greater than said first compressive load and wherein said shear member is constructed and arranged to fracture and form a shear segment upon application of the second compressive load; and a boss on the shank constructed and arranged to interface with said shear member to align said shear member with respect to said shank, wherein said boss extends inside of the smallest internal dimension of said shear member before application of the first compressive load.