Patent ID: 7204667
Filing Date: 2007-04-17
Classification: F16B

Abstract:
1. A high strength bolted structure comprising: a box section member and an adjacent joining hardware with each having multiple aligned bolt holes for a high strength bolted connection; at least at one of said multiple aligned bolt holes of said box section member and adjacent joining hardware: a nut having a sleeve fixed to said nut and having a female thread abuts against an inner side of said box section member adjacent said bolt hole, with said sleeve of said nut inserted into said adjacent bolt hole of said box section member; a nut holding part having a flange and a sleeve, with said sleeve of said nut holding part inserted into said bolt hole of said box section member adjacent said nut from an outer side of said box section member, with said flange of said nut holding part abutting said outer side of said box section member, and with said sleeve of said nut holding part engaged with said sleeve of said nut, whereby said nut is secured to said inner side of said box section member; a high strength bolt having a nut head and a male thread, said high strength bolt inserted through aligned bolt holes of said box section member and adjacent joining hardware from an outer side of said adjacent joining hardware, with said nut head of said high strength bolt adjacent said outer side of said adjacent joining hardware and with said male thread of said high strength bolt screwed into said female thread of said nut, thereby providing said high strength bolted structure.