US 12,241,494 B2
Multi-piece bolts and methods of making the same
Arnold R. Limatoc, Aiea, HI (US); Joel S. Peck, Kapolei, HI (US); and James P. Karins, Chuluota, FL (US)
Assigned to CRUSHLOCK, INC., Chuluota, FL (US)
Filed by CRUSHLOCK, INC., Chuluota, FL (US)
Filed on Aug. 10, 2021, as Appl. No. 17/398,833.
Application 17/398,833 is a continuation of application No. 16/358,466, filed on Mar. 19, 2019, granted, now 11,111,945.
Claims priority of provisional application 62/653,168, filed on Apr. 5, 2018.
Prior Publication US 2021/0364028 A1, Nov. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. F16B 19/00 (2006.01); F16B 31/04 (2006.01); F16B 39/284 (2006.01)
CPC F16B 31/04 (2013.01) [F16B 39/284 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for making a bolt, the method comprising:
providing a shaft having a first end and a second opposing end;
forming a flared protrusion at the first end of the shaft;
forming a thread on the shaft such that the thread extends from the second end to the flared protrusion;
threadingly engaging a bolt head onto the thread of the shaft at the second opposing end of the shaft, the bolt head including (i) an interior threaded bore, (ii) a front surface, and (iii) an opposing back surface having a recess;
rotating the bolt head relative to the shaft such that bolt head translates along the shaft towards the first end;
continuing to rotate the bolt head until the flared protrusion formed in the shaft is received within the recess of the bolt head, thereby forming the bolt; and
fixing the bolt head to the shaft such that the bolt head is prevented from rotating relative to the shaft,
wherein at least a portion of the shaft including the thread extends beyond the bolt head after the forming the bolt.