Improvements in relation to blind bolting

Details Improvements in relation to blind bolting Improvements in relation to blind bolting

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 35/00 (2006.01) B25B 31/00 (2006.01) F16B 35/04 (2006.01) F16B 43/00 (2006.01)

Patent

CA 2552448

A method of installing a threaded fastener (8) from one side of a hole (20, 21) through a substrate (18, 19). The fastener includes a collar (12) and a bolt (10) having a head (28), a threaded tail portion (33) and a tool engagement portion (34) extending from the tail. The method includes: (a) engaging the tool engagement portion with a bolt engagement portion (67) of a tool (60), (b) passing the bolt through to the far side of the hole and supporting it there by way of the tool, (c) passing the collar through the hole while supporting it with the tool; (d) assembling the bolt and collar to form the threaded fastener having a head larger than the hole; (e) engaging a nut (14) to tighten the fastener; and (f) detaching the tool from the fastener. Separation of the bolt engagement portion and the tool engagement portion is prevented by a moveable member (78) which engages both portions.

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