EP 1656240 A1 20060517 - DOUBLE NUT FOR THE CONTROLLED TIGHTENING OF A PART BY MEANS OF A SCREW CONNECTION
Title (en)
DOUBLE NUT FOR THE CONTROLLED TIGHTENING OF A PART BY MEANS OF A SCREW CONNECTION
Title (de)
DOPPELMUTTER ZUM KONTROLLIERTEN SPANNEN EINES BAUTEILS MITTELS SCHRAUBENVERBINDUNG
Title (fr)
DOUBLE-ECROU POUR TENDRE UNE PARTIE STRUCTURALE DE MANIERE CONTROLEE A L'AIDE D'UNE LIAISON A VIS
Publication
Application
Priority
- EP 2004008477 W 20040729
- DE 10339201 A 20030822
Abstract (en)
[origin: WO2005021216A1] The invention relates to a double nut for the controlled tightening of a part by means of screw connections, consisting of a pulling bush (4) with an internal thread (5), which can be screwed onto the end of the thread (3) of the screw, with an external thread (6), and with a pressing bush (7), which can be screwed onto the external thread and which is supported on the part (1) that is to be tightened by means of the screw connection. The internal thread (8) of said pressing bush engages inside the external thread of the pulling bush while being situated at a distance of a number of turns of the thread from the end of the pulling bush facing the part to be tightened. The external thread also serves to screw on a pulling bush (24) of a hydraulic screw tightening cylinder (18). This hydraulic screw tightening cylinder has a supporting bush (20), which encircles the pressing sleeve, is also supported on the part that is to be tightened by means of the screw connection, and which overlaps the pulling bush and pressing bush.
IPC 1-7
IPC 8 full level
B25B 29/02 (2006.01)
CPC (source: EP US)
B25B 29/02 (2013.01 - EP US); Y10S 411/917 (2013.01 - EP US)
Citation (search report)
See references of WO 2005021216A1
Designated contracting state (EPC)
CH DE DK ES FR GB LI
DOCDB simple family (publication)
WO 2005021216 A1 20050310; CN 100425408 C 20081015; CN 1839016 A 20060927; DE 10339201 A1 20050331; DE 10339201 B4 20050721; DE 502004008165 D1 20081113; DK 1656240 T3 20090202; EP 1656240 A1 20060517; EP 1656240 B1 20081001; ES 2313049 T3 20090301; JP 2007503557 A 20070222; JP 4712705 B2 20110629; US 2007020061 A1 20070125; US 7338240 B2 20080304
DOCDB simple family (application)
EP 2004008477 W 20040729; CN 200480024170 A 20040729; DE 10339201 A 20030822; DE 502004008165 T 20040729; DK 04763584 T 20040729; EP 04763584 A 20040729; ES 04763584 T 20040729; JP 2006524251 A 20040729; US 56935506 A 20060222