Refrigeration – Means producing shaped or modified congealed product – With means for working congealing material – e.g. – beater
Reexamination Certificate
1999-09-27
2001-03-27
McDermott, Corrine (Department: 3744)
Refrigeration
Means producing shaped or modified congealed product
With means for working congealing material, e.g., beater
C366S309000
Reexamination Certificate
active
06205806
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an ice cream making apparatus and an agitator for the same, more particularly to an household ice cream making apparatus and an agitator for the same.
2. Description of the Related Art
FIG. 1
illustrates a conventional ice cream making apparatus. The apparatus includes a stand
11
, a container
13
mounted on the stand
11
, an agitator
15
disposed inside the container
13
, a driving unit
14
connected to the agitator
15
, and a cover
12
covering the top of the container
13
. The agitator
15
includes a shaft
151
, a spiral-shaped blade
153
mounted on the shaft
151
, an L-shaped blade
152
mounted on the shaft
151
and the spiral-shaped blade
153
, and an extruding screw portion
155
extending downward from the shaft
151
. The screw portion
155
extends through the bottom of the container
13
so as to extrude the ice cream out from the container
13
.
While the above described agitator
15
can be used in an ice cream making apparatus, its mixing effect is unsatisfactory as the quality of the resulting ice cream is relative poor.
SUMMARY OF THE INVENTION
Therefore, it is an object of the present invention to provide an agitator for an ice cream making apparatus that is capable of providing an excellent mixing effect for producing good quality ice cream.
According to one aspect of this invention, an agitator for an ice cream making apparatus of this invention comprises: a shaft having opposing top and bottom ends, and defining an axis that extends through the top and bottom ends; first left and right arms mounted on the shaft adjacent to and below the top end of the shaft, the first left and right arms extending radially and oppositely from the shaft, and having first left and right ends distal from the shaft, respectively; second left and right arms mounted on the shaft adjacent to and above the bottom end of the shaft, the second left and right arms extending radially and oppositely from the shaft and being aligned with the first left and right arms, respectively, the second left and right arms having second left and right ends aligned with the first left and right ends, respectively; a first left wing extending downwardly from a bottom side of the second left arm in a direction substantially parallel to the axis, and a first right wing extending downwardly from a bottom side of the second right arm and inclined at an angle relative to the axis; diametrically opposed third left and right arms interconnecting the first and second left ends and the first and second right ends, respectively; and second left and right wings extending inclinedly from the third left and right arms, respectively.
According to another aspect of this invention, an agitator for an ice cream making apparatus of this invention comprises: a stand; a container mounted on the stand; a cover mounted on the container; a shaft disposed inside the container, the shaft having opposing top and bottom ends, and defining an axis that extends through the top and bottom ends; an extruding screw portion coaxial with the shaft and extending downwardly from the bottom end of the shaft through the container; first left and right arms mounted on the shaft adjacent to and below the top end of the shaft, the first left and right arms extending radially and oppositely from the shaft, and having first left and right ends distal from the shaft, respectively; second left and right arms mounted on the shaft adjacent to and above the bottom end of the shaft, the second left and right arms extending radially and oppositely from the shaft and being aligned with the first left and right arms, respectively, the second left and right arms having second left and right ends aligned with the first left and right ends, respectively; a first left wing extending downwardly from a bottom side of the second left arm in a direction substantially parallel to the axis, and a first right wing extending downwardly from a bottom side of the second right arm and inclined at an angle relative to the axis; diametrically opposed third left and right arms interconnecting the first and second left ends and the first and second right ends, respectively; second left and right wings extending inclinedly from the third left and right arms, respectively; and a driving unit mounted on the stand and connected to the shaft for rotating the shaft and the extruding portion about the axis.
REFERENCES:
patent: 1039779 (1912-10-01), Miles
patent: 2784951 (1957-03-01), Bakewell
patent: 2924952 (1960-02-01), Swenson et al.
patent: 4429549 (1984-02-01), Randolphi
patent: 4796440 (1989-01-01), Shiotani et al.
patent: 4910973 (1990-03-01), Osrow et al.
patent: 5890804 (1999-04-01), Edwards et al.
Ali Mohammad M
McDermott Corrine
Trop Pruner & Hu, P.C
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