US 11,053,968 B1
Blind bolt
Bruce A. Carmichael, Bay Village, OH (US); and Michael Strange, Medina, OH (US)
Assigned to Allfasteners USA, LLC, Medina, OH (US)
Filed by Allfasteners USA, LLC, Medina, OH (US)
Filed on Jun. 22, 2018, as Appl. No. 16/16,010.
Application 16/016,010 is a continuation of application No. 14/957,934, filed on Dec. 3, 2015, granted, now 10,018,212, issued on Jul. 10, 2018.
Application 14/957,934 is a continuation of application No. 14/734,271, filed on Jun. 9, 2015, granted, now 9,694,478, issued on Jul. 4, 2017.
Application 14/734,271 is a continuation in part of application No. 14/727,021, filed on Jun. 1, 2015, granted, now 9,683,593, issued on Jun. 20, 2017.
Claims priority of provisional application 62/102,920, filed on Jan. 13, 2015.
Claims priority of provisional application 62/079,921, filed on Nov. 14, 2014.
Claims priority of provisional application 62/069,797, filed on Oct. 28, 2014.
Claims priority of provisional application 62/009,357, filed on Jun. 9, 2014.
This patent is subject to a terminal disclaimer.
Int. Cl. F16B 13/06 (2006.01)
CPC F16B 13/063 (2013.01) 9 Claims
OG exemplary drawing
 
1. A blind bolt for extending through a hole, the hole having a diameter, a length, a proximate end and a distal end, the hole extending through a first member and a second member with a surface formed on the second member adjacent the distal end of the hole, and with an interface between the first member and the second member, the blind bolt comprising:
a blind bolt shaft having a length greater than the length of the hole and having a distal end and a proximate end with threads formed on the blind bolt shaft adjacent the proximate end;
a blind bolt head on the distal end of the blind bolt shaft, the blind bolt head having a diameter that is smaller than the diameter of the hole;
a folding washer being foldable along a fold line for being disposed on the distal end of the threaded blind bolt shaft between the blind bolt head and the surface on the second member, the folding washer having a folded configuration with a dimension and configuration such that it may pass through the hole and having an unfolded configuration with a diameter greater than the diameter of the hole and configured such that it may not pass through the hole;
a shear sleeve disposed on the blind bolt shaft proximate the distal end of the blind bolt shaft and having a length dimension sufficient to extend from the surface of the second member, across the interface between the first and second members, and into the first member;
a nut threaded on the threads of the blind bolt shaft; and
a compressible coil disposed on the blind bolt shaft between the shear sleeve and the nut;
the compressible coil and the shear sleeve having a combined length such that, when the folded washer is in the unfolded configuration between the head and the surface, the shear sleeve and the compressible coil are positioned within the hole, and the nut is being tightened, the compressible coil is compressed and creates a force pushing the shear sleeve, the shear sleeve being dimensioned to slide on the blind bolt shaft within the hole in response to the force of the compressible coil, and the compressible coil being dimensioned and configured to transmit a force from the nut as it is tightened to slide the shear sleeve to a position extending across the interface.