Foods and beverages: apparatus – Means to treat food – By isolating a fluid constituent
Reexamination Certificate
2002-09-27
2003-10-28
Simone, Timothy F. (Department: 1761)
Foods and beverages: apparatus
Means to treat food
By isolating a fluid constituent
C099S495000, C099S513000, C100S117000, C100S145000
Reexamination Certificate
active
06637323
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of Invention
The present invention is directed to a juice extractor, more specifically to improvement of a juicer which can be easily controlled with simple manipulation for optimum squeezing pressure in order to provide the best squeezing force and maximize the effectiveness of the compression depending on the kind of foodstuff such as fruit or vegetables.
2. Description of the Prior Art
A typical structure of a squeezing-type extractor in the prior art relates to a helical spindle connected to a power driving source at one end part without a supporting member at the other end part of the spindle. Due to the absence of a sustaining element for the rotating spindle, blades of the spindle are subject to frictional abrasion with a squeeze housing or a filtering case, resulting in a noisy sound during operation. Thus, problems related to the low rate of juice extraction and deficiency in the mechanical structure remain in the prior art.
To solve the above mentioned problems of juice extractors in the prior art, an utility patent application by the same inventor of this present invention was filed in the Korean Patent Office as the application No. 2001-033462.
As seen in FIG.
1
and
FIG. 2
, the juice extractor
30
in the prior application comprise a structure related to an inlet
32
in the upper part and an outlet
33
in the lower part of a housing
31
, a helical spindle
35
located inside of the housing
31
being connected to a power driving source
34
, a filtering case
36
or a squeeze housing (not shown on drawings) which surrounds the outer surface of the helical spindle, and a bushing element
37
made of Acetyl-resin having the property of durability being combined with a nozzle part
40
so that the bushing element
37
can support the end part of the rotating helical spindle
35
with the combination of a drum cap
38
.
The size of pin holes
36
a
formed on the filtering case
36
are designed to fit with the technical specification of the helical spindle
35
which is partitioned into the sector of an inlet grinding portion
35
b
, a fine grinding portion
35
c
and a refine grinding portion
35
d
to enhance the extracting efficiency of juice while in the squeezing operation. In addition, inside of a guide case
36
b
, a conical extracting portion
35
e
of the helical spindle
35
being contacted with the elastic packing
39
helps to transport the foodstuff providing an appropriate squeezing pressure for the smooth operation of the juicer.
But the above mentioned structure in the juice extractor
30
has problems in that the squeezing pressure exerted between the guide case
36
b
and the elastic packing
39
remains constant regardless of the type of the materials to be squeezed, which results in deficiency of the squeezing operation; in addition, a noisy sound due to friction between the rotating helical spindle
35
and the elastic packing
39
is encountered, and furthermore the structure has no typical function or means for guiding effectively to extract the dregs of foodstuff while in the operation of squeezing.
SUMMARY OF THE INVENTION
Accordingly, the present invention is directed to a new juice extractor enabling one to easily set the best squeezing pressure with simple manipulation and eliminating the noisy sound between the helical spindle and the elastic packing.
The present invention provides an improved structure for a juice extractor to maximize the efficiency of juice extraction and to minimize frictional sound with the structural movement of a bushing element in connection with a helical spindle using a pressure control cap so as to adjust the squeezing pressure in a simple way, and further to provide a new constitution for extracting the dregs of foodstuff in a very convenient way.
REFERENCES:
patent: 4429626 (1984-02-01), Ihara et al.
patent: 4440074 (1984-04-01), Ihara et al.
patent: 5396836 (1995-03-01), Kim
patent: 5452650 (1995-09-01), Lee
patent: 5906154 (1999-05-01), Yoon et al.
patent: 5970860 (1999-10-01), Yip
patent: 6425321 (2002-07-01), Yip
Jacobson & Holman PLLC
Simone Timothy F.
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