EP 1319475 A3 20080910 - Method of operating a hydraulic pressing tool and hydraulic pressing tool
Title (en)
Method of operating a hydraulic pressing tool and hydraulic pressing tool
Title (de)
Verfahren zum Betreiben eines hydraulischen Verpressgerätes und hydraulisches Verpressgerät
Title (fr)
Méthode pour operer un outil de sertissage hydraulique et outil de sertissage hydraulique
Publication
Application
Priority
- DE 20120204 U 20011213
- DE 10206801 A 20020219
Abstract (en)
[origin: US2003126905A1] The invention relates to a method of operating a hydraulic pressing unit, in particular manual pressing unit, and a pressing unit of this type, it being the case that the pressing unit has a hydraulic pump, a moving part, a stationary part and a non-return valve, that, furthermore, the moving part is displaced into a pressing position by the build-up of a hydraulic pressure and the non-return valve moves automatically into an open position only in the presence of a predetermined hydraulic pressure corresponding to a pressing pressure, and that, furthermore, the moving part is configured for moving back automatically from the pressing position into an end position under the action of a restoring spring and the non-return valve is configured only to close once the moving part has reached the end position. In order to allow the moving part to be stopped optionally in position, the invention proposes, as far as the method is concerned, that the non-return valve is subjected to the action of a closure force, which is necessary for achieving the optional stopping in position of the moving part [lacuna] as the moving part moves back, when a pre-selected return position or a predetermined return position of the moving part is reached. It is advantageous here if it is possible to stop the return of the moving part before it reaches the end position by a triggering device, acting on the non-return valve. The open position of the non-return valve may also be arrested until a predetermined return position of the moving part has been reached.
IPC 8 full level
B25B 27/10 (2006.01); B21D 39/04 (2006.01); B21J 15/20 (2006.01); F15B 11/028 (2006.01); F15B 15/20 (2006.01)
CPC (source: EP US)
B21J 15/20 (2013.01 - EP US); B25B 27/10 (2013.01 - EP US); F15B 11/028 (2013.01 - EP US); F15B 15/204 (2013.01 - EP US); F15B 2211/30505 (2013.01 - EP US); F15B 2211/40515 (2013.01 - EP US); F15B 2211/411 (2013.01 - EP US); F15B 2211/423 (2013.01 - EP US); F15B 2211/426 (2013.01 - EP US); F15B 2211/473 (2013.01 - EP US); F15B 2211/50536 (2013.01 - EP US); F15B 2211/55 (2013.01 - EP US); F15B 2211/7052 (2013.01 - EP US); F15B 2211/76 (2013.01 - EP US); F15B 2211/7716 (2013.01 - EP US)
Citation (search report)
- [A] EP 1121997 A1 20010808 - CBC SPA [IT]
- [A] GB 2057945 A 19810408 - NOWIKONTAKT AB
- [AD] US 6276186 B1 20010821 - FRENKEN EGBERT [DE]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
Designated extension state (EPC)
AL LT LV MK RO
DOCDB simple family (publication)
US 2003126905 A1 20030710; US 6769356 B2 20040803; AT E469732 T1 20100615; DE 10206801 A1 20030626; DE 20120204 U1 20030417; DE 20221862 U1 20080828; DE 50214464 D1 20100715; DK 1319475 T3 20101004; EP 1319475 A2 20030618; EP 1319475 A3 20080910; EP 1319475 B1 20100602; ES 2344249 T3 20100823
DOCDB simple family (application)
US 31926902 A 20021212; AT 02027234 T 20021206; DE 10206801 A 20020219; DE 20120204 U 20011213; DE 20221862 U 20021206; DE 50214464 T 20021206; DK 02027234 T 20021206; EP 02027234 A 20021206; ES 02027234 T 20021206