Blind fastener and method of making

Details Blind fastener and method of making Blind fastener and method of making

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 13/04 (2006.01) B21K 1/58 (2006.01) F16B 19/10 (2006.01)

Patent

CA 2066432

2066432 9105959 PCTABS00005 A blind fastener comprises a fastener body (12), a stem (14) and a shaped shear ring wire (18). The shear ring (18) in one embodiment is disposed in an annular groove (36) disposed intermediate the ends of a neck of the stem (14). When the fastener is installed, a bulbing portion (44) of the shear ring (18) upsets the tail end of the fastener and then shears at a predetermined load. An anchor portion (42) of the shear ring (18) travels through the fastener body, with the stem neck radially expanding the fastener to fill the hole within the workpieces (24) being secured together. A lock ring groove (34) is formed in the stem midsection of smaller diameter at the intersections of the stem neck and midsection. In another embodiment, the shear ring (18) is positioned at the intersection so that the shear ring anchor portion (42) engages the rear of a lock ring positioned in said lock ring groove (36).

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