Agitating – Operator supported
Patent
1998-07-22
2000-07-18
Cooley, Charles E.
Agitating
Operator supported
366331, A47J 43044, A47J 4307, A47J 4310
Patent
active
060897465
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to the general technical field of household food preparation appliances, of the multi-function or multi-purpose type or even mini or multi-choppers provided with a rotatable working attachment capable of being positionable against the bottom of a container.
The present invention concerns a household food preparation appliance, of the multi-purpose food processor type, comprising a working container and a rotary working assembly including a motor unit with a drive shaft capable of carrying a working attachment, said assembly being capable of being positionable in the container, substantially against the bottom of said container, in association with a bearing means.
In the framework of the invention it is in order to understand by the term household food preparation appliance, of the multi-purpose food processor type, all electrical appliances of which the rotatable working attachment should be disposed in a container substantially bearing against the bottom in a manner to be able to assume the function assigned to the attachment, and this independently of the type of attachment utilized, from the instant that it is in rotation in the container. Consequently, the term food preparation appliance takes on, in the context of the invention, a broad meaning including various appliances not limited by their food preparation function which can consist by way of non-limiting example in chopping, mixing, grinding, emulsifying, etc.
PRIOR ART
Such appliances are for example described in the patent application FR-A2642294 which refers to a cutter-mixer appliance for food preparation. The appliance described comprises a bowl in which can be provided a rotatable working assembly including a motor unit driving in rotation a drive shaft on which is mounted, in a removable or non-removable manner, a working attachment, or tool, such as a blade. In the working position, the drive shaft is positioned in the bowl, its extremity coming to rest by bearing against this latter. In a conventional manner, it is envisioned in order to permit centering and rotation of the working attachment, in this case the blade, to provide, to integrate in the bottom of the bowl, for example by overmoulding, a fixed shaft extending axially starting from the bottom and from the center of this same bowl. In this manner, the drive shaft and the attachment can bear against this shaft, which permits centering and rotational support for the attachment. Such technique is widely used in most small household food preparation appliances.
The drawbacks of this solution are linked to the difficulty of cleaning the bowl, since it has at its bottom and at its center an insert generally made of metal interfering particularly with a good cleaning but being able equally to be the source of bacterial proliferation. Moreover, the presence of an insert or metal shaft prevents the utilization of the bowls in conventional or microwave ovens, which is often perceived by consumers to be a negative limitation on utilization. The insert affects the ergonomics of the bowl and renders it difficult to use them for serving by interfering with the displacement of utensils at the bottom of the bowl. Finally, on the industrial scale, positioning of the metal insert constitutes an additional step in a fabrication process leading to a cost increase.
An appliance according to the prior art is known from the document U.S. Pat. No. 4,813,624.
SUMMARY OF THE INVENTION
The object of the invention aims consequently at providing a solution to the different drawbacks listed previously and in furnishing a household food preparation appliance having a simplified general design, without at the same time limiting its ease of utilization.
The form and the nature of the materials aid moreover the damping of vibrations caused by high rotational speeds.
Another object of the invention is to provide a household food preparation appliance which is particularly easy to use.
Another object of the invention is to provide a household food preparation a
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Cooley Charles E.
Seb S.A.
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