Anti-unscrewing device for ring nuts in coupling systems for...

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member extending between plural fasteners and restricting...

Reexamination Certificate

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Details

C411S102000, C411S114000, C411S326000, C411S978000, C411S145000

Reexamination Certificate

active

07862276

ABSTRACT:
An anti-unscrewing device for coupling the tubular ends of two components in fluid conveying or delivery systems by means of a threaded ring nut that can be screwed to one of said tubular ends to connect said ends, wherein said anti-unscrewing device comprises a connecting portion to connect the device to one of the components and at least one counter element provided with an engaging portion suitable to engage a corresponding engaging surface formed at said ring nut, such that the engaging portion can be displaced by means of a movement of the ring nut. There are further provided guide means dictating a movement path for the counter element, such that an unscrewing movement of the ring nut will cause the engaging portion to move to a locking position relative to the ring nut thereby preventing the ring nut from unscrewing.

REFERENCES:
patent: 5083819 (1992-01-01), Bynum
patent: 5362110 (1994-11-01), Bynum
patent: 5388866 (1995-02-01), Schlosser
patent: 5823702 (1998-10-01), Bynum
patent: 6679663 (2004-01-01), DiStasio et al.
patent: 0 945 664 (1999-09-01), None
patent: 1 452 789 (2004-09-01), None
European Search Report dated Jul. 4, 2005 for European Application No. 05 42 5033.

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