Juicer having two cutters

Details Juicer having two cutters Juicer having two cutters

2000-08-25

2001-03-20

Simone, Timothy F. (Department: 1761)

Foods and beverages: apparatus

Means to treat food

By isolating a fluid constituent

C099S513000

Reexamination Certificate

active

06202547

ABSTRACT:

BACKGROUND OF THE INVENTION
FIG. 1
illustrates the general structure of a currently commercially available juicer A. As shown, the juicer A includes a base A
1
, an operating motor A
2
mounted in the base A and having an externally threaded main shaft A
3
upward projected therefrom, a working bowl A
4
, a strainer basket A
5
, and a rotary cutter A
6
sequentially mounted on the top of the base A
1
around the main shaft A
3
o the motor A
2
, and a top cover A
7
covering a top of the working bowl A
4
. Fruit or vegetable is fed into the juicer via a feed tube A
8
provided on the top cover A
7
and is slowly pushed downward with a plunger A
9
. The fruit or vegetable, when being exposed from a lower end of the feed tube A
8
, is ground by the rotary cutter A
6
to produce juice and pulp. The pulp is thrown under a centrifugal force of the rotary cutter directly to a discharge outlet A
1
. Since there is only one cutter, the pulp is produced and centrifugally thrown out within a very short time after the fruit or vegetable is in contact with the rotary cutter A
6
, and therefore the pulp still contains considerably large amount of juice. This is, of course, an unnecessary waste of the fruit or vegetable.
It is therefore tried by the inventor to develop a juicer having two cutters to eliminate the drawbacks existing in the conventional juicer that has only one rotary cutter.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a juicer having two cutters to fully grind the fruit or vegetable fed into the juicer to produce as much juice as possible.
To achieve the above and other objects, the juicer according to the present invention includes a rotary cutter mounted onto the main shaft of the operating motor of the juicer to rotate along with the main shaft of the motor, and a stationary cutter fixedly connected to a lower end of the feed tube downward extended from the top cover of the juicer to closely locate above and face against the rotary cutter. The stationary and the rotary cutters are provided on lower and upper surfaces, respectively, with a plurality of cutter blades at an inner area and a grinding zone around an outer peripheral area. Any fruit or vegetable fed into the juicer via the feed tube is first ground between the two cutters by the cutter blades and any partially ground fruit or vegetable is then centrifugally moved to the peripheral grinding zones for further grinding to produce more juice before the resulting pulp is discharged from the juicer.


REFERENCES:
patent: 2311379 (1943-02-01), Gillanders
patent: 2845971 (1958-08-01), Cordero
patent: 3892365 (1975-07-01), Verdum
patent: 4183293 (1980-01-01), Arao et al.
patent: 4345517 (1982-08-01), Arao et al.
patent: 4506601 (1985-03-01), Ramirez et al.
patent: 4614153 (1986-09-01), Kurome et al.
patent: 4681031 (1987-07-01), Austad
patent: 4700621 (1987-10-01), Elger
patent: 5222430 (1993-06-01), Wang
patent: 5421248 (1995-06-01), Hsu
patent: 5433144 (1995-07-01), Lee
patent: 5479851 (1996-01-01), McClean et al.

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