Bolt, the axial force of which is to be determined by a...

Details Bolt, the axial force of which is to be determined by a... Bolt, the axial force of which is to be determined by a...

2008-07-15

2011-12-13

Saether, Flemming (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

With means to indicate application of predetermined...

C411S014000, C073S761000

Reexamination Certificate

active

08075233

ABSTRACT:
The object of the present invention is to provide a bolt, the axial force of which can be measured by a supersonic wave, or the like, with high accuracy and which can be manufactured in a shortened process.A bolt1having an angular polygonal shaped bolt head2is provided in the present invention. A recess4is formed on the bolt head2and a projection5having a plane upper face6is formed on the inner side of the recess4, and at the end of the bolt shaft3, a plane end face8is formed, and a wall, the outside of which being a C-face part is formed around the plane end face8.

REFERENCES:
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patent: 3718066 (1973-02-01), Dally
patent: 4506917 (1985-03-01), Hansen
patent: 5029480 (1991-07-01), Kibblewhite
patent: 5220839 (1993-06-01), Kibblewhite
patent: 5913650 (1999-06-01), Daoud
patent: 6009759 (2000-01-01), Kibblewhite et al.
patent: 6712570 (2004-03-01), Kersten
patent: 2002-113546 (2002-04-01), None
patent: 2002-316235 (2002-10-01), None
patent: 2007-301663 (2007-11-01), None

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