Releasable coupling device between a tool shank and a motor...

Details Releasable coupling device between a tool shank and a motor... Releasable coupling device between a tool shank and a motor...

2006-07-28

2008-12-09

Cooley, Charles E (Department: 1797)

Agitating

Operator supported

C403S322200

Reexamination Certificate

active

07461967

ABSTRACT:
The invention discloses a fast and reliable coupling device between a tool shank and a motor assembly of a hand-held blender, which can be released by the user. The motor assembly is of the type that has a cylindrical nozzle centrally positioned on the base by which it couples to the tool shank, the outer side of which has a threaded portion, whilst the tool shank has an internally threaded nut that is complementary to the nozzle, the base of the motor assembly also including a formation that projects outwards, with a hole through which a retaining ball projects, pushed by a spring, whilst radial partitions project from the outer wall of the coupling nut of the tool shank towards the inner face of the coupling bell, one of these partitions having on its upper edge a cup-shaped formation that is of suitable dimensions to admit and house said ball when aligned with it during the coupling operation between said tool shank and motor assembly.

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