U.S. patent application number 10/022816 was filed with the patent office on 2002-07-11 for juice extractor.
Invention is credited to Yip, Chung Lun.
Application Number | 20020088352 10/022816 |
Document ID | / |
Family ID | 4689468 |
Filed Date | 2002-07-11 |
United States Patent
Application |
20020088352 |
Kind Code |
A1 |
Yip, Chung Lun |
July 11, 2002 |
JUICE EXTRACTOR
Abstract
A juice extractor includes an auger tube having an auger
rotatably mounted within it. The auger has a spiral formation of
decreasing pitch toward a grinding end. At the grinding end, a
grinding surface bears against a grinding plate to extract more
juice from fruit or vegetable sediment. Sediment is delivered
through an outlet, whereas juice is deliver from a separate outlet
to a cup having a special shape.
Inventors: |
Yip, Chung Lun; (King's Park
Villa, HK) |
Correspondence
Address: |
Ladas & Parry
26 West 61 Street
New York
NY
10023
US
|
Family ID: |
4689468 |
Appl. No.: |
10/022816 |
Filed: |
December 18, 2001 |
Current U.S.
Class: |
99/495 ; 99/501;
99/506; 99/510 |
Current CPC
Class: |
A47J 19/025
20130101 |
Class at
Publication: |
99/495 ; 99/501;
99/506; 99/510 |
International
Class: |
A23N 001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 10, 2001 |
CN |
01214880.6 |
Claims
1. A juice extractor comprising: an auger tube having an inlet for
receiving fruit and/or vegetable pieces to be juiced and an outlet
for extracted juice, an auger rotatably mounted within the tube and
driven from outside the tube to rotate, a grinder at one end of the
auger for receiving partly juiced sediment and grinding the
sediment for extracting more juice therefrom, and a ground sediment
outlet separate from the juice outlet.
2. The juice extractor of claim 1 wherein the auger includes a
spiral formation having a pitch which decreases toward the
grinder.
3. The juice extractor of claim 1 wherein the grinder includes a
grinding surface on one end of the auger and a grinding plate fixed
within the auger tube, the grinding surface turning against the
grinding plate upon rotation of the auger.
4. The juice extractor of claim 3 wherein the grinding surface has
a spiral formation and the grinding plate has a spiral formation in
an opposite direction to the spiral formation of the grinding
surface.
5. The juice extractor of claim 1 wherein a residue outlet cap is
temporarily secured to the auger tube.
6. The juice extractor of claim 5 wherein the grinding plate is
fixed within the residue outlet cap.
7. The juice extractor of claim 3 wherein the grinding surface and
grinding plate are substantially conical in form.
8. The juice extractor of claim 5 wherein the residue outlet cap is
substantially conical in form.
9. The juice extractor of claim 1 wherein the auger tube has
internal longitudinal grooves formed therein.
10. The juice extractor of claim 1 wherein the auger has a splined
end onto which a handle having a splined socket is received.
11. The juice extractor of claim 1 wherein the auger tube includes
a formation and the juice extractor also includes a base to which
the formation is received.
12. The juice extractor of claim 11 wherein the base is temporarily
mounted upon a flat surface by a suction fastener.
Description
FIELD OF THE INVENTION
[0001] The following invention relates to a juice extractor. More
particularly, although not exclusively, the invention relates to a
juice extractor having an auger which drives fruit or vegetable
sediment toward a grinding mechanism for pulverising the sediment
to extract more juice therefrom.
[0002] Known juice extractors can comprise various rotatable
mechanisms for extracting juice from fruit or vegetables. For
citrus juice, the fruit can be cut into halves and each half pushed
down upon a rotating conical/hemispherical surface. Such devices
not only remove juice from the fruit but also mix in with the
juice, the fibrous fruit particles and seeds. These particles are
included with the extracted juice to be embibed.
[0003] It might be desired to provide a natural fruit or vegetable
juice with a reduced quantity of residue therein.
OBJECT OF THE INVENTION
[0004] It is an object of the present invention to provide a juice
extractor in which fruit or vegetable sediment is better separated
from the juice itself.
[0005] It is a further object of the present invention to provide
and improved juice extractor that extracts more juice from fruit or
vegetable sediment.
[0006] It is yet further object of the present invention to provide
an efficient juice extractor for mounting temporarily on a kitchen
bench.
[0007] It is a general object of the present invention to overcome
or substantially ameliorate the above mentioned disadvantages.
DISCLOSURE OF THE INVENTION
[0008] There is disclose herein a juice extractor comprising:
[0009] an auger tube having an inlet for receiving fruit and/or
vegetable pieces to be juiced and an outlet for extracted
juice,
[0010] an auger rotatably mounted within the tube and driven from
outside the tube to rotate,
[0011] a grinder at one end of the auger for receiving partly
juiced sediment and grinding the sediment for extracting more juice
therefrom, and
[0012] a ground sediment outlet separate from the juice outlet.
[0013] Preferably the auger includes a spiral formation having a
pitch which decreases toward the grinder.
[0014] Preferably the grinder includes a grinding surface on one
end of the auger and a grinding plate fixed within the auger tube,
the grinding surface turning against the grinding plate upon
rotation of the auger.
[0015] Preferably the grinding surface has a spiral formation and
the grinding plate has a spiral formation in an opposite direction
to the spiral formation of the grinding surface.
[0016] Preferably a residue outlet cap is temporarily secured to
the auger tube.
[0017] Preferably the grinding plate is fixed within the residue
outlet cap.
[0018] Preferably the grinding surface and grinding plate are
substantially conical in form.
[0019] Preferably the residue outlet cap is substantially conical
in form.
[0020] Preferably the auger tube has internal longitudinal grooves
formed therein.
[0021] Preferably the auger has a splined end onto which a handle
having a splined socket is received.
[0022] Preferably the auger tube includes a formation and the juice
extractor also includes a base to which the formation is
received.
[0023] Preferably the base is temporarily mounted upon a flat
surface by a suction fastener.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] A preferred form of the present invention will now be
described by way of example with reference to FIG. 1 which is a
schematic parts--exploded perspective illustration of a juice
extractor.
DESCRIPTION OF THE PREFERRED EMBODIMENT
[0025] In the accompanying drawing there is schematically depicted
in a parts-exploded diagram a juice extractor 10.
[0026] Juice extractor 10 includes an auger tube 11 having an inlet
hopper 37 as shown.
[0027] An auger 15 is fitted within the auger tube 11 and has a
splined driving end fitted within a splined socket 23 of a handle
12. That is, the driving end of the auger passes through an opening
in one end of the auger tube 11 to receive externally of the tube
11 the splined socket 23. Rotation of handle 12 causes rotation of
the auger 15 within the auger tube 11.
[0028] Extending longitudinally along the inner surface of the
auger tube 11 are grooves 13. These grooves 13 might be spaced the
whole way around the inner surface of the tube 11 or just part way
therearound. If the grooves do not extend the whole way around the
inner surface of the tube 11, they might be provided just in the
lower part thereof.
[0029] To centrally mount the auger 15, a bearing 14, typically
formed of nylon fits around the splined end of the auger to locate
the auger centrally of the aperture (not shown) through which the
splined end passes to receive the splined socket 23. The splined
end of the auger can be made of a different material than the main
part of the auger itself. Where the auger is of plastics material,
the splined end might be of stronger or higher density plastics.
This piece might be adhered or plastics welded to the main part of
the auger.
[0030] A residue outlet cap 19 is threaded onto the end of the
auger tube 11. The residue outlet cap 19 has a conical form, to the
inside of which there is received a metal grinding plate 18.
Grinding plate 18 has helical indentations pressed thereon which
correspond with similar shaped helical formations (not shown)
moulded on the inside surface of the conical cap 19. These helical
formations mate with those of the grinding plate to prevent the
grinding plate 18 from spinning within the cap 19. A sealing ring
17 fits within the cap 19 and presses against the end of the auger
tube 11 when the cap 19 is threaded thereon. The residue outlet cap
19 has a tip with a through-passage 34. This tip is externally
threaded to receive a residue tip outlet 20 having a small aperture
35 therein. Ground residue passes through the openings 34 and 35 to
be received by a cup for example.
[0031] The auger 15 has a conically formed metallic grinding
surface 16 adhered to its end. The grinding surface 16 has spiral
shaped formations extending in a direction opposite to the
direction of the formations formed on the grinding plate 18. Plate
18 and surface 19 are typically metallic, whereas the other
component of the auger and housing are typically formed of moulded
plastics material. The auger tube might be light is transmissive or
transparent. The auger 18 has a spiral 36 extending about its
exterior surface from one end to the other. The pitch of the spiral
decreases toward the grinding surface 16. That is, beneath the
hopper 37, the pitch of the spiral is high, whereas the pitch
decreases toward the residue outlet end.
[0032] The auger tube 11 has a lug 38 at its bottom surface to be
received within a formation 39 at the top of a base 21.
[0033] The base 21 is to be temporarily secured to a kitchen bench
top by means of a suction fasting device therein.
[0034] The base 21, typically formed as a plastics moulding
includes a shaft 26 having an eccentricity or cam located thereon.
The shaft extends through an aperture 25. At the end of the shaft,
there is provided a square head 27 that passes through a washer 28.
Washer 28 is secured into a recess by screws. A dial 29 is attached
to the square head 27 and extends partly into the recess in the
base about the aperture 25. Within the base 29, there is provided a
plate 30 which cooperates with a lifter 32. Lifer 32 has an
upstanding leg through which there is formed a cam surface 33. The
shaft 36 passes through the aperture about which the cam surface 33
is formed, such that upon rotation of the shaft 26 upon turning of
dial 29, the lifer 32 lifts upwardly away from the bench top into
the base 21. The lifter 32 bears against a diaphragm 31 formed of
rubber for example and fixed at its periphery to the base. This
diaphragm acts like a suction cup to hold the base 21 on to the
bench top.
[0035] A specially shaped cup 22 sits on the bench top and partly
surrounds the base 21. The cup 22 includes a juice receiving
extension 40 which sits directly beneath the juice outlet 24.
[0036] In use, pieces of fruit and/or vegetable are inserted
through the hopper 37 to the feed end of the auger tube 11. The
handle 12 is rotated in a clockwise direction so as to cause the
auger 15 to rotate within the tube 11. As a result, the fruit
and/or vegetable pieces are caught by the spiral formation 36 to
drive the pieces toward the grinding surface 16.
[0037] Due to the longitudinal grooves 13 against which the auger's
spiral formation closely bears, the pieces do not simply rotate
within the tube 11, but are forced toward the grinding surface 16.
As the pitch of formation 36 decreases, the pieces are squeezed and
extracted juice is caused to flow back to the outlet 24 to be
received by the cup 22. As fibrous sediment and seeds for example
are delivered to the grinding surface 16, they are pulverized
between this surface and the grinding plate 18 against which the
grinding surface turns. As the parts have spiral formations in
opposing directions, an efficient crushing effect is achieved.
Also, the pulverized pieces are driven toward the outlet apertures
34 and 35 and more juice is squeezed therefrom. Because aperture 35
is very small, nearly all of the juice from these pieces is driven
back into the cylinder 11 to flow back to the juice outlet 24. To
assist this flow, the bottom of the auger tube 11 can be inclined
downwardly toward juice outlet 24. It should be appreciated that
modifications and alternations obvious to those skilled in the art
are not to be considered as beyond the scope of the present
invention.
[0038] For example, the cup 22 could be provided with two
compartments, one for juice and the other for sediment received
from the outlet 35. Also, instead of a manually operated handle, an
electric motor, and possibly a reduction gearbox could drive the
auger.
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