Lock nut

Details Lock nut Lock nut

2011-05-10

2011-05-10

Saether, Flemming (Department: 3677)

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

Internally threaded fastener element, e.g., nut, etc.

Having cap

C411S910000

Reexamination Certificate

active

07938610

ABSTRACT:
A special shape inner peripheral surface connected to a base end side of a female thread and set to be rotatable only by a first special purpose tool is formed in a nut main body. A cap is constituted by a shaft portion which is inserted to the special shape inner peripheral surface of the nut main body and having a male thread threaded with a base end portion of the female thread of the nut main body in a leading end side, and a head portion provided in abase end side of the shaft portion.

REFERENCES:
patent: 533338 (1895-01-01), Bagley
patent: 972140 (1910-10-01), Adam
patent: 4170918 (1979-10-01), Burge
patent: 4302137 (1981-11-01), Hart
patent: 5391028 (1995-02-01), Charles
patent: 5797659 (1998-08-01), Fuller
patent: 6017177 (2000-01-01), Lanham
patent: 2 128 282 (1984-04-01), None
patent: 3125160 (2006-08-01), None
patent: WO 98/27344 (1998-06-01), None
European Search Report issued Feb. 1, 2011 in European patent application EP 08 00 7518.

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