Method for effecting a screwed connection

Metal working – Method of mechanical manufacture – With testing or indicating

Reexamination Certificate

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Details

C029S407050, C029S525010, C029S525020, C029S525110, C073S761000, C411S368000, C411S190000, C081S055000

Reexamination Certificate

active

08033000

ABSTRACT:
A screwed connection has a threaded bolt; a nut; a washer arranged between the nut and a surface of a component to be clamped; a screwing device with a housing, a holding tool connected to the housing, and a tightening tool that engages positively the nut; a measuring element arranged in the washer for measuring a compressive force generated by tightening the screwed connection. The washer has an anti-rotation device oriented toward the surface of the component. The outer periphery of the washer is positive-lockingly engaged by the holding tool. The washer has no positive or frictional connection to the threaded bolt, and the holding tool has no torque supporting action on the threaded bolt or on any other part so that a reaction moment, generated when tightening the nut, is introduced from the housing of the screwing device through the washer into the component to be clamped.

REFERENCES:
patent: 110511 (1870-12-01), Ratcliff
patent: 1363504 (1920-12-01), Flynn
patent: 3541844 (1970-11-01), Stover
patent: 4159483 (1979-06-01), Bettin
patent: 5222399 (1993-06-01), Kropp
patent: 5888012 (1999-03-01), Nygren et al.
patent: 6253642 (2001-07-01), Junkers
patent: 6490952 (2002-12-01), Junkers
patent: 2004/0131445 (2004-07-01), Kjellberg
patent: 11 24 729 (1962-03-01), None
patent: 198 54 062 (2000-11-01), None
patent: 0 440 011 (1991-08-01), None
patent: 2004097232 (2004-11-01), None

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