EP 0911080 B1 20021211 - Centrifuge with dismountable rotor and a device for the axial locking of the rotor on the drive shaft and rotor for such a centrifuge
Title (en)
Centrifuge with dismountable rotor and a device for the axial locking of the rotor on the drive shaft and rotor for such a centrifuge
Title (de)
Zentrifuge mit abnehmbarem Rotor und einer Einrichtung zur axialen Verriegelung des Rotors auf der Antriebswelle, sowie Rotor für eine solche Zentrifuge
Title (fr)
Centrifugeuse à rotor démontable et à dispositif de blocage axial du rotor sur une tête d'entraînement, et rotor pour une telle centrifugeuse
Publication
Application
Priority
FR 9713308 A 19971023
Abstract (en)
[origin: EP0911080A1] A centrifuge has a rotating driving head (2) fixed to a rotating shaft (43), a rotor (3) fixed to the driving head, a means (21) of coupling the driving head and the rotor in rotation, and a means of blocking axial movement on the shaft comprising a means of applying an axial force to a surface (9) of the rotor where the force increases with the rotational speed of the driving head. The means of applying an axial force to the rotor has at least two inertial masses (56) mounted on one end of the driving head symmetrically about its axis of rotation (42). Each mass can be moved between a position unblocking the rotor axially, in which the mass is retracted into the driving head, and a position blocking the rotor axially, depending on the speed of rotation of the head. In this position, the pressing part of the mass extends beyond the external radial surface (49) of the driving head and acts with a ramped surface (11) to a receiving opening (7) on the rotor. This ramped surface is inclined towards the inside of the opening and towards the pressing surface (9) of the rotor. The ramp is conical. At least one mass is held elastically from its retracted position to an initial blocking position. The pressing surface (9) and the holding surface (47) are conical and matched. At least one mass is a shock load to produce a resonant signal during the blocking. An Independent claim is included for a rotor for a centrifuge as above with a receiving opening for at least one end of a driving head, with a surface pressing against the holding surface and at least one ramp which acts with part of a mass, inclined towards the inside from the outside and towards the pressing surface.
IPC 1-7
IPC 8 full level
B04B 5/02 (2006.01); B04B 9/08 (2006.01); B04B 9/12 (2006.01)
CPC (source: EP US)
B04B 9/08 (2013.01 - EP US); B04B 2007/025 (2013.01 - EP US); B04B 2009/085 (2013.01 - EP US); Y10T 403/602 (2015.01 - EP US); Y10T 403/608 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0911080 A1 19990428; EP 0911080 B1 20021211; AT E229375 T1 20021215; DE 69810060 D1 20030123; DE 69810060 T2 20031009; ES 2189110 T3 20030701; FR 2770154 A1 19990430; FR 2770154 B1 19991126; JP 4239119 B2 20090318; JP H11197549 A 19990727; US 6063018 A 20000516
DOCDB simple family (application)
EP 98402433 A 19981002; AT 98402433 T 19981002; DE 69810060 T 19981002; ES 98402433 T 19981002; FR 9713308 A 19971023; JP 30240298 A 19981023; US 16695598 A 19981006