Patent ID: 7461967
Filing Date: 2008-12-09
Classification: A47J,Y10T

Abstract:
1. Releasable coupling device between a tool shank and a motor assembly in hand-held blenders, in particular a coupling device that enables the user to perform a firm and reliable connection between the two components and easily separate the tool shank ( 2 ) from the motor assembly ( 1 ) of the blender when cleaning, maintenance or replacement operations of the tool shank ( 2 ) are to be performed, the connection between which is determined by an externally threaded cylindrical nozzle ( 3 ) formed on the closing base at the distal end of the motor assembly ( 1 ), through which the drive shaft is accessed, and a nut portion ( 10 ) complementarily threaded on its inner face, formed on the inside of a coupling bell piece ( 4 ) on the proximal end of the tool shank ( 2 ), the inside of the coupling bell also having multiple angularly equally-spaced partitions ( 11 ) that extend radially between said nut portion ( 10 ) and the inner surface of the wall of the coupling bell ( 4 ) to form a succession of hollow interior segments, which is characterised in that the motor assembly ( and in that the bell (