US3703200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating cereal grains and seeds
Assignee: UNITED MILLING SYSTEMS AS
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Filing: 1970-07-28
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Granted: 1972-11-21
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Expires: 1990-07-28
Abstract
Abstract Seeds and grains are dehulled in an apparatus comprising a drum rotating in a casing. The seeds are first treated in a radial gap between an end face of the drum and the casing and then between a peripheral face of the drum and a surrounding part of the casing.
Inventors
- 👤 Leslie Palyi
- 👤 Helge Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:22
CPC Classifications
B; B02; B02B; B02B3/00; B02B3/04
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
182 words
An apparatus for the dehulling of grain material, comprising: an outer casing; an axially extending drum positioned in said casing; said drum having an axis about which it rotates; said drum including an outwardly extending wall; said casing including a first wall facing toward and spaced away from said drum outwardly extending wall; said outwardly extending and said first wall being shaped and oriented to define a radially extending gap between said drum outwardly extending wall and the said facing casing first wall; said drum including an axially extending wall intersecting its said outwardly extending wall; said casing including an axial wall facing toward and spaced away from said drum axially extending wall, thereby defining an annular gap between said drum axially extending wall and said casing axial wall; said annular gap intersecting said radially extending gap; said casing having a grain material inlet adjacent said drum axis and leading into said radially extending gap; impeller blower means located near said drum axis and in said radially extending gap for blowing grain material through both said radially extending and said annular gaps.
Claim 2
Independent Claim
182 words
An apparatus for the dehulling of grain material, comprising: an outer casing; an axially extending drum positioned in said casing; said drum having an axis about which it rotates; said drum including an outwardly extending wall; said casing including a first wall facing toward and spaced away from said drum outwardly extending wall; said outwardly extending and said first wall being shaped and oriented to define a radially extending gap between said drum outwardly extending wall and the said facing casing first wall; said drum including an axially extending wall intersecting its said outwardly extending wall; said casing including an axial wall facing toward and spaced away from said drum axially extending wall, thereby defining an annular gap between said drum axially extending wall and said casing axial wall; said annular gap intersecting said radially extending gap; said casing having a grain material inlet adjacent said drum axis and leading into said radially extending gap; impeller blower means located near said drum axis and in said radially extending gap for blowing grain material through both said radially extending and said annular gaps.
Claim 3
Independent Claim
182 words
An apparatus for the dehulling of grain material, comprising: an outer casing; an axially extending drum positioned in said casing; said drum having an axis about which it rotates; said drum including an outwardly extending wall; said casing including a first wall facing toward and spaced away from said drum outwardly extending wall; said outwardly extending and said first wall being shaped and oriented to define a radially extending gap between said drum outwardly extending wall and the said facing casing first wall; said drum including an axially extending wall intersecting its said outwardly extending wall; said casing including an axial wall facing toward and spaced away from said drum axially extending wall, thereby defining an annular gap between said drum axially extending wall and said casing axial wall; said annular gap intersecting said radially extending gap; said casing having a grain material inlet adjacent said drum axis and leading into said radially extending gap; impeller blower means located near said drum axis and in said radially extending gap for blowing grain material through both said radially extending and said annular gaps.
Claim 4
Independent Claim
182 words
An apparatus for the dehulling of grain material, comprising: an outer casing; an axially extending drum positioned in said casing; said drum having an axis about which it rotates; said drum including an outwardly extending wall; said casing including a first wall facing toward and spaced away from said drum outwardly extending wall; said outwardly extending and said first wall being shaped and oriented to define a radially extending gap between said drum outwardly extending wall and the said facing casing first wall; said drum including an axially extending wall intersecting its said outwardly extending wall; said casing including an axial wall facing toward and spaced away from said drum axially extending wall, thereby defining an annular gap between said drum axially extending wall and said casing axial wall; said annular gap intersecting said radially extending gap; said casing having a grain material inlet adjacent said drum axis and leading into said radially extending gap; impeller blower means located near said drum axis and in said radially extending gap for blowing grain material through both said radially extending and said annular gaps.
Claim 5
Dependent Claim
20 words
An apparatus in accordance with claim 1, wherein said impeller blowing means is secured to said drum and rotates therewith.
Claim 6
Independent Claim
260 words
A method for dehulling seed material as the seed material moves between an input and an output location, comprising the steps of: a. guiding the seed material along a path and in a first direction toward the input location; b. imparting a propelling force for abruptly urging the seed material along a substantially straight path extending radially outward and substantially perpendicular to said first direction as the seed material passes said first location, said propelling force being the only force utilized for moving said seed material between the input and output locations; c. imparting a circular motion to said seed material as it moves radially outward toward a second location; d. abruptly guiding the seed material in a direction substantially perpendicular to said radial direction as the seed material passes said second location and urging said seed material to move in a circular manner as it moves linearly toward a third location; e. confining said seed material to an annular passage space as it moves between said second and third locations; f. abruptly urging the seed material radially outward, as it passes said third location toward the output location for collection thereof; g. abrading the seed material as it passes between the first and third locations to remove the coverings therefrom; h. gradually reducing the width of the path along which the seed material moves as it passes between the first and second locations to increase the abrading action; and i. extracting the removed coverings from the annular-shaped passage space as the dehulled seed material moves toward the third location.
Claim 7
Independent Claim
260 words
A method for dehulling seed material as the seed material moves between an input and an output location, comprising the steps of: a. guiding the seed material along a path and in a first direction toward the input location; b. imparting a propelling force for abruptly urging the seed material along a substantially straight path extending radially outward and substantially perpendicular to said first direction as the seed material passes said first location, said propelling force being the only force utilized for moving said seed material between the input and output locations; c. imparting a circular motion to said seed material as it moves radially outward toward a second location; d. abruptly guiding the seed material in a direction substantially perpendicular to said radial direction as the seed material passes said second location and urging said seed material to move in a circular manner as it moves linearly toward a third location; e. confining said seed material to an annular passage space as it moves between said second and third locations; f. abruptly urging the seed material radially outward, as it passes said third location toward the output location for collection thereof; g. abrading the seed material as it passes between the first and third locations to remove the coverings therefrom; h. gradually reducing the width of the path along which the seed material moves as it passes between the first and second locations to increase the abrading action; and i. extracting the removed coverings from the annular-shaped passage space as the dehulled seed material moves toward the third location.
Claim 8
Dependent Claim
19 words
An apparatus in accordance with claim 1 in which the radially extending gap narrows conically in an outward direction.
Claim 9
Dependent Claim
15 words
An apparatus in accordance with claim 1 comprising spring means for axially loading the shaft.
Claim 10
Dependent Claim
25 words
An apparatus in accordance with claim 1 comprising rubber-like lining material on the drum and on the casing so as to line the radial gap.
Claim 11
Dependent Claim
21 words
An apparatus in accordance with claim 6 in which the lining material on the drum comprises a supporting foam elastomer layer.
Claim 12
Dependent Claim
22 words
An apparatus in accordance with claim 1 in which the radial gap merges gradually, in a curved manner with the axial gap.
Claim 13
Dependent Claim
34 words
An apparatus in accordance with claim 8 comprising a ring of a material which avoids build up of electrostatic charge and which defines the curved transition between the radial gap and the axial gap.
Claim 14
Dependent Claim
39 words
An apparatus in accordance with claim 1 comprising a perforated piece of sheet metal forming part of the casing and externally defining the axial gap, the casing further comprising means defining an annular chamber around this perforated sheet metal.
Claim 15
Dependent Claim
42 words
An apparatus in accordance with claim 1 comprising a frictional lining which bounds the axial gap over at least part of its periphery, the remaining part of the gap being outwardly delimited by means provided with holes to act as a sieve.
Claim 16
Dependent Claim
31 words
An apparatus in accordance with claim 11 in which the frictional lining extends for the upper half of the gap while the sieve lining extends for the bottom part of it.
Claim 17
Dependent Claim
17 words
An apparatus in accordance with claim 11 in which the frictional lining is of an elastomeric material.
Claim 18
Dependent Claim
23 words
An apparatus in accordance with claim 12 in which the elastomeric lining is provided with grooves parallel to the axis of the drum.
Claim 19
Dependent Claim
14 words
An apparatus in accordance with claim 12 comprising brushes inserted in the frictional lining.
Claim 20
Dependent Claim
21 words
An apparatus in accordance with claim 12 in which the frictional lining is provided with brushes, smooth material and grooved material.
Claim 21
Dependent Claim
27 words
An apparatus in accordance with claim 1 comprising beating knives arranged on the outer periphery of the drum and substantially parallel to the axis of the drum.
Claim 22
Dependent Claim
48 words
An apparatus in accordance with claim 17 in which some of the knives extend only along the outer peripheral face of the drum in a direction parallel to the axis of the drum while other knives extend additionally radially inwards over the radial end face of the drum.
Claim 23
Dependent Claim
15 words
An apparatus in accordance with claim 17 in which the beating knives are helically arranged.
Claim 24
Dependent Claim
39 words
An apparatus in accordance with claim 18 in which the radially extending parts of the beating knives so lying in a plane radial in relation to the axis of the drum are directed to points removed from the axis.
Claim 25
Dependent Claim
23 words
An apparatus in accordance with claim 20 in which downstream ends of the beating knives are higher than upstream ends of the knife.
Claim 26
Dependent Claim
29 words
An apparatus in accordance with claim 21 comprising an elastomeric lining with radially extending grooves on the end face of the drum so as to line the radial gap.
Claim 27
Dependent Claim
25 words
An apparatus in accordance with claim 1 in which the drum is provided on its radial face with a lining provided with sections with brushes.
Claim 28
Dependent Claim
30 words
An apparatus in accordance with claim 5 in which the spring means comprises a helical spring urging the drum in a direction leading to an enlargement of the radial gap.
Claim 29
Dependent Claim
21 words
An apparatus in accordance with claim 24 comprising an axially adjustable abutment for limiting displacement of the drum by the spring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |