High strength blind bolt fastener

Details High strength blind bolt fastener High strength blind bolt fastener

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 13/04 (2006.01) F16B 19/10 (2006.01)

Patent

CA 2068508

ABSTRACT OF THE DISCLOSURE A high strength blind bolt for fastening structural workpieces the blind bolt being of a swage type, pull type construction and having a pin member with a plurality of locking grooves, a main sleeve, an expandable sleeve and a collar adapted to be swaged into the lock grooves, the main sleeve having a tapered nose portion adapted to radially expand the expandable sleeve in response to the application of a preselected relative axial force applied between the pin member and the collar, the tapered nose portion being defined by a preselected small angle to limit the radial expansion of the expandable sleeve to provide a high strength blind head for engaging the adjacent, blind side of the structural workpieces and to initially clamp the structural workpieces together at a high clamp load and to provide a final high, residual clamp load upon swaging of the collar into the lock grooves of the pin member.

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