Press for food products, such as fruits or vegetables, and kitch

Details Press for food products, such as fruits or vegetables, and kitch Press for food products, such as fruits or vegetables, and kitch

1999-09-02

2000-12-26

Simone, Timothy

Foods and beverages: apparatus

Means to treat food

By isolating a fluid constituent

99492, 99509, 99510, 241 375, 241 92, 241261, 366314, 366601, A23N 100, A23N 102

Patent

active

061641960

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The present invention relates to a press, particularly for domestic use, for food products, such as fruits or vegetables adapted to be reduced to a puree, and which is adapted particularly but not exclusively to be mounted on an electric kitchen apparatus called a kitchen appliance which, by the securement of various tools such as knives, scraper disks, chopping disks, etc. on the shaft of an electric motor, permits carrying out preparations of various foods.
It concerns more particularly a press of this type comprising a working bowl closed by a removable cover and enclosing a rotatable press tool comprising a vertical central shaft which carries at least one pressing blade whose outer edge extends toward the lateral wall of the bowl, and which is coupled in rotation to a drive shaft of a motor group by means of a coupling device, said blade being maintained in contact against a fixed sieve under the influence of a return spring associated with the blade-carrying shaft so as to cause, when turning, the pressing and the passage of the food products through the sieve, and the assembly formed by the blade and the shaft which carries it being moreover adapted, in the case in which the blade encounters a hard body, to rise against the force of the return spring.
There is to be understood by a hard body, a body which has abnormally high resistance, such as for example a large apricot pit during the preparation of apricot nectar.


BACKGROUND OF THE INVENTION

In a known press of this type, in the case of the introduction of a hard body into the products to be pressed, this hard body, upon pressing, will wedge laterally against the external edge of the blade and the lateral wall of the working bowl, thus blocking the blade and leading to an abnormal heating of the motor which thus can be damaged.
To overcome this risk, it has already been proposed to arrange in the supply circuit of the motor a thermal protective device, for example of the thermostatic detector type, adapted to cut the supply to the motor when the detected temperature exceeds a given threshold. However, such a thermal protective device is particularly costly, sizable and requires precise adjustment which is difficult to obtain.


OBJECT OF THE INVENTION

The invention has particularly for its object to overcome these drawbacks and to provide at lowest cost a press of the type described above, which permits in a simple way avoiding any deterioration of the motor group arising from lateral wedging of the blade due to a hard body introduced into the products to be pressed.


SUMMARY OF THE INVENTION

According to the invention, the coupling device of the blade-carrying shaft of the press tool with the drive shaft of the motor group also constitutes a device adapted to uncouple the blade-carrying shaft of said drive shaft when the assembly formed by the blade and the blade-carrying shaft rises.
Thanks to this coupling device serving also to uncouple the blade-carrying shaft from the shaft of the motor group upon each rising of the blade-carrying shaft following the encounter of a hard body by the blade, there is provided a mechanical protection for the motor, and no longer a thermal protection as in the prior art, which will be simple and reliable, thereby permitting providing a press apparatus offering optimum guarantee of safety.
In a preferred embodiment of the invention, the coupling-uncoupling device of the blade-carrying shaft of the press tool, from the drive shaft of the motor group, is constituted by a disengageable clutch device.
The invention also provides a kitchen appliance, of the type comprising a housing enclosing a motor group and having a region forming a base outside of which the drive shaft of the motor group projects vertically, and on which is removably mounted a press according to the invention.


BRIEF DESCRIPTION OF THE DRAWINGS

The characteristics and advantages of the invention will become further apparent from the description which follows, by way of non-limiting example, with reference to the acc

REFERENCES:
patent: 4840119 (1989-06-01), Caldi
patent: 5031522 (1991-07-01), Brixel et al.
patent: 5421248 (1995-06-01), Hsu
patent: 5433144 (1995-07-01), Lee
patent: 5669289 (1997-09-01), Chen
patent: 5761993 (1998-06-01), Ling et al.
patent: 5924357 (1999-07-01), Chen

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