Household food preparation appliance for preparing liquid...

Details Household food preparation appliance for preparing liquid... Household food preparation appliance for preparing liquid...

2005-12-15

2008-03-04

Francis, Faye (Department: 3725)

Solid material comminution or disintegration

Apparatus

Rotating comminuting surface

Reexamination Certificate

active

07338001

ABSTRACT:
A food processing appliance having: a drive shaft coupled to a motor; a bowl having a hollow sleeve that extends upwardly from its bottom; a lid for closing the bowl; and a processing tool that includes a hub having an opening that extends from its lower end, and arranged to be fitted over the sleeve. The tool has a drive element coupleable to the drive shaft to be rotated by the motor. The lid is constructed to be placed on the bowl in a manner that leads to a reduction in the volume enclosed between the bowl and the lid while maintaining a degree of fluid tightness. The hub is provided with a vent and encloses a passage that is distinct from the lower drive element and that extends between the vent and the opening to allow escape of air from the volume to a region outside of the bowl.

REFERENCES:
patent: 4111372 (1978-09-01), Hicks et al.
patent: 5979806 (1999-11-01), Borger et al.
patent: 6007011 (1999-12-01), McBain
patent: 2 707 187 (1995-01-01), None

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