Canadian Patents Database / Patent 2334192 Summary

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(12) Patent: (11) CA 2334192
(54) English Title: APPARATUS FOR CLEANING AND DESTONING PARTICULATE FOODS
(54) French Title: APPAREIL PERMETTANT DE NETTOYER ET D'ELIMINER LES CAILLOUX D'ALIMENTS PARTICULAIRES
(51) International Patent Classification (IPC):
  • B03B 5/66 (2006.01)
  • A23N 12/00 (2006.01)
  • B03B 5/62 (2006.01)
(72) Inventors (Country):
  • GUPTA, VIJAI P. (United States of America)
(73) Owners (Country):
  • GUPTA, VIJAI P. (United States of America)
(71) Applicants (Country):
  • GUPTA, VIJAI P. (United States of America)
(74) Agent: NA
(45) Issued: 2005-11-29
(86) PCT Filing Date: 1998-04-14
(87) PCT Publication Date: 1999-10-21
Examination requested: 2003-02-24
(30) Availability of licence: N/A
(30) Language of filing: English

English Abstract





An apparatus for cleaning particulate materials which readily sink
in water, being slightly heavier than water by removing much heavier
particulates and by also removing particulates which either float or sink
very slowly in water. Differences in settling velocities in water are used
to separate groups of particulate materials, by allowing the particulates to
float or settle through two columns (1, 2) filled with water. The columns
(1, 2) have water flowing upward at different velocities, or watering flowing
upward through one column (2) and stagnant water in the other column (1).


French Abstract

L'invention concerne un appareil permettant de nettoyer des matériaux particulaires légèrement plus lourds que l'eau, qui s'enfoncent rapidement dans l'eau, par élimination des particules beaucoup plus lourdes et des particules qui flottent ou s'enfoncent lentement dans l'eau. On utilise les différences de vitesses de dépôt dans l'eau pour séparer des groupes de matériaux particulaires, les particules pouvant flotter ou se déposer dans deux colonnes (1, 2) remplies d'eau. Les colonnes (1, 2) présentent un écoulement d'eau vers le haut à différentes vitesses, ou un écoulement d'eau vers le haut dans une colonne (2) et de l'eau stagnante dans l'autre colonne (1).


Note: Claims are shown in the official language in which they were submitted.



What I claim as new is:
1. Food-cleaning apparatus for separating into three fractions feed
particulate
matter in which said three fractions are mixed, a first one of said fractions
consisting of particles that float or sink slowly in stagnant water, a second
one
of said fractions consisting of particles of food that sink more rapidly than
the
said first fraction in stagnant water but which if introduced into water
flowing
upwardly at an average velocity of a predetermined minimum value or higher
will be carried upwardly by said upwardly-flowing water, and a third one of
said
fractions consisting of particles that will sink if introduced into water
flowing
upwardly at said predetermined minimum value, said apparatus comprising:
(a) first and second substantially vertical columns, each having a lower
and an upper end, the lower end of the first column being connected to the
second column through an entry port located at a point between the ends of
the second column,
(b) means for causing water to flow upwardly through said second
column at an average velocity exceeding said predetermined minimum value
and for causing water in said first column to flow upwardly through said first
column at a low average velocity less than the said predetermined minimum
value or to remain stagnant,
(c) means for introducing said feed particulate matter into said first
column while water in said first column is either stagnant or flowing upwardly
at an average velocity below said predetermined minimum value and water in
second column is flowing upwardly at an average velocity exceeding said
predetermined minimum velocity, thereby causing said first fraction to be
carried to the upper surface of the water in said first column and causing
said
second and third fractions to sink through the water in said first column past
the lower end thereof and through said entry port into the upwardly flowing
water in said second column, and in which:
(d) the particulate matter entering the upwardly-flowing water in said
second column from said first column is separated within said second column
into said second and third fractions, the third fraction sinking toward the
lower
8



end of said second column while the second fraction is carried by the
upwardly-flowing water toward the upper end of said second column,
(e) means is provided for removing said second fraction from the upper
end of said second column via a first path, and
(f) means is provided for removing said first fraction from the upper
surface of the water present in said first column via a second path that is
separate from said first path, whereby said first and second fractions remain
separated.
2. The apparatus of claim 1 in which said first column is located outside said
second column in side-by-side relationship to said second column.
3. The apparatus of claim 1 in which said first column is located within said
second column in spaced relationship to said second column so that the
upwardly-flowing water in said second column flows upwardly through the
space around said first column.
4. The apparatus of claim 1 in which the water in both said first and second
columns is controlled in such a manner that during separation of said
fractions, an upper surface exposed to atmospheric pressure is present on the
water in each of said two columns.
5. The apparatus of claim 4 in which the upper surface level of the water in
said first column is controlled by a stand pipe that is vertically adjustable
and
has an entry opening and an exit opening, the entry opening being at the upper
surface of the water in said first column and the exit opening being located
beneath said entry opening and outside said first column.
6. The apparatus of claim 4 in which the upper surface level of the water in
said second column is controlled by means forming a dam at the top of said
second column over which water containing said second fraction flows.
9



7. The apparatus of claim 1 in which the average water velocity in said second
column is in the range of 5 to 200 cm/ sec and the average water velocity in
said first column is in the range of 0 to 20 cm/ sec.
8. The apparatus of claim 1 in which the average water velocity in said second
column is in the range of 6 to 50 cm/ sec and the average water velocity in
said
first column is in the range of 0 to 10 cm/ sec.
9. The apparatus of claim 1 in which the particles of said second fraction are
beans, peas, or grains and the particles of said third fraction are of
materials
having a greater density than the particles of said second fraction.
10. Apparatus as defined in claim 1 and further comprising means for
introducing a flow of gas into the water in said first column at a location
below
the upper surface of the water in the said first column for producing upwardly
moving gas bubbles in said first-column water for facilitating upward
movement of said first fraction in said first-column water, the flow of gas
being
controlled at such a rate that said second fraction is free to sink through
the
water in said first column and at least some of the bubbles remain distinct
until reaching the upper water surface.
11. The apparatus of claim 1 in which said means for introducing said feed
particulate matter into said first column comprises a line through which the
feed particulate matter flows into said first column, said line having an exit
opening normally located below the water level in said first column.
12. The apparatus of claim 1 in which said means of paragraph (f) removes
floating particles of said first fraction from the upper surface of the water
present in said first column.
13. The apparatus of claim 11 in which said means for removing said first
fraction removes floating particles of said first fraction from the upper
surface
of the water present in said first column.


14. The apparatus of claim 10 in which the feed particulate matter is wheat
containing grain dust and said first fraction comprises said grain dust.
11


A single figure which represents the drawing illustrating the invention.

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Admin Status

Title Date
(86) PCT Filing Date 1998-04-14
(87) PCT Publication Date 1999-10-21
(85) National Entry 2000-12-12
Examination Requested 2003-02-24
(45) Issued 2005-11-29
Lapsed 2009-04-14

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
The additional fee for late payment $200.00 2000-12-04
Filing $150.00 2000-12-04
Maintenance Fee - Application - New Act 2 2000-04-14 $50.00 2000-12-04
Maintenance Fee - Application - New Act 3 2001-04-17 $50.00 2001-04-15
Reinstatement - failure to respond to office letter $200.00 2001-08-21
Maintenance Fee - Application - New Act 4 2002-04-15 $50.00 2002-03-28
Request for Examination $200.00 2003-02-24
Maintenance Fee - Application - New Act 5 2003-04-14 $75.00 2003-02-24
Maintenance Fee - Application - New Act 6 2004-04-14 $100.00 2004-03-01
Maintenance Fee - Application - New Act 7 2005-04-14 $100.00 2005-03-04
Final $150.00 2005-09-19
Maintenance Fee - Patent - New Act 8 2006-04-18 $100.00 2006-04-11
Maintenance Fee - Patent - New Act 9 2007-04-16 $100.00 2007-03-19
Back Payment of Fees $125.00 2008-02-06
Back Payment of Fees $200.00 2008-07-15

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Representative Drawing 2001-03-21 1 3
Description 2000-12-04 7 364
Abstract 2000-12-04 1 44
Claims 2000-12-04 4 160
Drawings 2000-12-04 2 17
Representative Drawing 2005-06-17 1 3
Cover Page 2001-03-21 1 39
Cover Page 2005-11-04 2 35
PCT 2000-12-04 3 110
Correspondence 2001-03-08 1 20
Correspondence 2001-08-21 1 39
Fees 2003-02-24 1 75
Prosecution-Amendment 2003-02-24 1 50
Prosecution-Amendment 2003-05-13 2 130
Fees 2001-04-15 1 72
Fees 2002-03-28 1 142
Fees 2004-03-01 1 109
Fees 2005-03-04 1 48
Correspondence 2005-09-19 1 80
Fees 2006-04-11 1 28
Fees 2007-03-19 1 45
Correspondence 2008-02-28 1 33
Fees 2008-02-06 1 63
Correspondence 2008-07-16 1 24
Correspondence 2008-10-20 1 27
Fees 2008-07-15 1 42