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Patent 2302971 Summary

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(12) Patent: (11) CA 2302971
(54) English Title: PAIRED ROW FURROW OPENER
(54) French Title: ORGANE OUVREUR DE SILLON EN LIGNES JUMELEES
Status: Expired
Bibliographic Data
(51) International Patent Classification (IPC):
  • A01C 5/06 (2006.01)
(72) Inventors :
  • SWAB, GERRY STEVEN (Canada)
  • HENRY, JAMES WAYNE (Canada)
(73) Owners :
  • CNH CANADA, LTD./LTEE. (Not Available)
(71) Applicants :
  • FLEXI-COIL LTD. (Canada)
(74) Agent: GOWLING WLG (CANADA) LLP
(74) Associate agent:
(45) Issued: 2008-09-02
(22) Filed Date: 2000-03-29
(41) Open to Public Inspection: 2001-09-29
Examination requested: 2005-02-03
Availability of licence: N/A
(25) Language of filing: English

Patent Cooperation Treaty (PCT): No

(30) Application Priority Data: None

Abstracts

English Abstract

A ground-engaging paired row furrow forming tool includes a tool body having fore and aft ends with an outer edge defined on each of two opposing sides of the tool body. A furrowing wing is located adjacent each of the opposing sides and protrudes from bottom portions of the tool body. The tool body has lower surfaces including a central front surface portion which is angled upwards towards the fore end and a center passage is defined between the furrowing wings. This passageway is in part defined by a central rear surface portion which is adapted to be substantially aligned fore to aft in a direction of travel T during operation of the ground engaging tool. This paired row opener works well without compromise in a broad range of soil conditions without fouling and enables planting of seed rows spaced widely apart while minimizing soil surface disturbance.


French Abstract

Un outil ouvreur de sillon en lignes jumelées comprenant un corps d'outil comportant des extrémités avant et arrière avec un bord extérieur défini sur chacun de deux côtés opposés du corps de l'outil. Une aile ouvreuse de sillon est adjacente à chacune des faces opposées et fait saillie à partir des parties du fond du corps de l'outil. Le corps de l'outil a des surfaces inférieures incluant une partie de surface avant centrale qui est inclinée vers le haut vers l'extrémité avant et un passage central est défini entre les ailes ouvreuses de sillon. Ce passage est en partie défini par une partie de surface arrière centrale qui est adaptée pour être sensiblement alignée de l'avant vers l'arrière dans une direction de déplacement T pendant le fonctionnement de l'outil s'engageant dans le sol. Cet organe ouvreur de sillon en lignes jumelées fonctionne bien sans compromis dans un large éventail de conditions de sol, sans salissure et permet la plantation de rangées de semences largement espacées, tout en minimisant les perturbations en surface du sol.

Claims

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





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CLAIMS:


1. A ground engaging paired row furrow forming tool comprising:
a tool body having fore and aft ends, an outer edge on each of two opposing
sides of the tool body; and
a furrowing wing adjacent each of the opposing sides and protruding from
bottom portions of the tool body; the tool body having lower surfaces
including a
central front surface portion which is angled upwards towards the fore end and
a
center passage being defined between the wings and which passageway is in part

defined by a central rear surface portion which is capable of being
substantially
aligned fore to aft in a direction of travel T during operation of the ground
engaging
tool, wherein each wing includes: an outer surface extending downwards and
inwards
from the outer edge and a fore surface extending from the central front
surface portion
downwards and outwards to intersect with the outer surface at a furrowing edge

portion of the wing.


2. The tool as in claim 1 in which each wing further includes an inner surface

further defining said passageway, said inner surface extending from the fore
surface
toward the aft end substantially in the direction of travel T during
operation.


3. The tool as in claim 1 in which said central rear surface portion defines a

space between base portions of the wings where they begin to protrude from
bottom
portions of the tool body, said central front surface portion blending
smoothly with
said central rear surface portion.


4. The tool as in claim 3 in which each wing further includes an inner surface

further defining said passageway, said inner surface extending from the fore
surface
toward the aft end substantially in the direction of travel T during
operation, and
extending from said central rear surface portion downwards and outwards to
intersect
with the outer surface at an extension of said furrowing edge portion of the
wing.


5. The tool as in claim 4 in which the extensions of the furrowing edges are
laterally spaced at least 3 inches.




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6. The tool as in claim 4 in which the protruding wings are V shaped in a
profile
as seen from the fore or aft ends.


7. The tool as in claim 3 in which the central front surface portion curves to

blend smoothly with said central rear surface portion to assist in avoiding
binding of
soil during operation.


8. The tool as in claim 7 wherein said central rear surface is generally flat
at least
toward the aft end.


9. The tool as in claim 8 in which the wing inner surfaces curve to blend with

said generally flat central rear surface portion to avoid sharp intersections
where soil
can hang up and bind.


10. The tool as in claim 8 in which the central rear surface portion is at
least 3/4
inch wide.


11. The tool as in claim 1 in which said wing fore surfaces are related to the

central front surface portion such that substantially no concavity is formed
by these
surfaces in planes lying in the direction of travel in which soil can hang up
and bind.

12. The tool as in claim 1 in which the central front surface portion curves
to
blend smoothly into the wing fore surfaces such that a distinct edge of
intersection is
not formed.


13. The tool as in claim 1 in which the outer edges on the opposing sides of
the
tool body are angled downwards from the fore end and in which the outer edges
are
curved rearwards as they extend to the aft end to enable them to be
substantially
horizontal when in operation.


14. The tool as in claim 13 in which seeding material delivery passages extend

through the tool body and terminates at the aft end of each wing protrusion.




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15. The tool as in claim 14 in which the seeding material delivery passages
converge into a single passage with a single inlet.


16. The tool as in claim 15 in which each wing further includes an inner
surface
further defining said passageway, said inner surface extending from the fore
surface
toward the aft end substantially in the direction of travel T during
operation, and
extending from said central rear surface portion downwards and outwards to
intersect
with the outer surface at an extension of said furrowing edge portion of the
wing and
in which the termination of the delivery passages is about 3/4 inch above the
extension of the furrowing edge.


17. The tool as in claim 16 in which said tool body includes an upper surface
extending from each outer edge upwards and inwards.


18. A ground engaging paired row furrow forming tool comprising:
a tool body having fore and aft ends, said body having surface portions
defining an outer perimeter extending on each of two opposing sides of the
tool body;
a furrow forming wing adjacent each of the opposing sides and protruding in
spaced apart relation from bottom portions of the tool body, each wing having
an
outer surface extending downwards and inwards from the outer perimeter; and, a

forward surface extending from the central front surface downwards and
outwards to
intersect with the outer surface at a furrow forming edge; and
said tool body having lower surfaces including a central front surface portion

which is angled upwards towards the fore end and which leads into a central
passage
extending rearwardly of the tool body between the wings, which passage is
capable of
being substantially aligned fore to aft in a direction of travel during
operation of the
furrow forming tool.


19. The tool as in claim 18 in which each wing further includes an inner
surface
extending from the forward surface toward the aft end substantially in the
direction of
travel T during operation.


20. The tool as in claim 18 including a central rear surface defining a space
between a base of the wings where they begin to protrude from the bottom
portions of




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the tool body, and thus defining with said wing inner surfaces the central
passage.

21. The tool as in claim 20 wherein each wing includes a furrow-forming edge,
said edges being parallel to each other.


22. The tool as in claim 21 wherein said edges are spaced apart at least about
3
inches.


23. The tool as in claim 21 wherein said central rear surface is generally
flat at
least toward the aft end.


24. The tool as in claim 23 wherein said central rear surface has a width of
at least
approximately 3/4 inch.

Description

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



CA 02302971 2000-03-29

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PAIRED ROW FURROW OPENER
FIELD OF INVENTION

This invention relates to an agricultural furrow opening tool for planting
seeds in paired rows.

BACKGROUND OF THE INVENTION

It is commonly desirable to perform seeding and fertilizing operations in
one pass over a field to be planted. This trend has continued with

advancements in low-till and no-till planting implements. Ground working
tools have evolved for planting in these no-till and low-till conditions and
for
improving seed bed utilization. Presently a wide variety of types of ground
working tools are available for planting in various soil conditions. These
ground working tools are generally categorized as disc types or hoe types.

Existing ground working tools designed for working well in certain conditions
are not always suitable in other conditions.

For many types of crops such as cereals and oilseeds, planting of the
seeds is efficiently achieved by bulk metering. The seeds become generally
evenly spaced as seeds are distributed at a seeding rate through distribution

lines to ground working tools by which they are planted in rows in the soil.
The rows are spaced to achieve the best possible utilization of the soil area,
however other factors effect row spacing, such as the need to allow field
trash
to pass between ground working tools while they are pulled through the soil
for

planting. This has led to the development of paired row seeding tools which
each plant two rows of seed to achieve good seedbed utilization with fewer
tools thus also allowing good field trash flow. It is also common that these
tools are also designed to simultaneously place a fertilizer row between the


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seed rows. Research has shown that precise placement of seed at particular
spacing along side an appropriate amount and type of fertilizer improves
yields.

One such ground working tool is provided according to the patent US
5025736 by Anderson. A hoe ground working tool is disclosed which has a
narrow leading end for opening a furrow for placement of fertilizer. Trailing
the leading end is a press plate which tapers to a wider rearward end from a
forward end centered behind the leading end. The press plate is also angled
downwards and rearwards from the leading end. It acts to press down on an
area wider than the furrow opened for fertilizer for closing the fertilizer
furrow
and preparing a firm seedbed. It has a wear strip along each side of the press
plate which is claimed to extend beyond the rear end of the press plate so
that
grooves are formed in the seed bed. A seed distribution tube carries seed to a
divider disposed behind the press plate which randomly divides the seed into

two streams directing the seed to the sides of the seed bed and into the
laterally
spaced grooves. However it is known that in some soil conditions,
particularly that known as heavy soil, more aggressive action is required to
close the fertilizer furrow. If this furrow remains unclosed and no level
seedbed is formed, then a large amount of seed falls into the fertilizer
furrow

rather than being placed to each side. Fertilizer too close to the seed is
toxic to
the seed as it germinates and they will die.

A similar hoe ground opener is disclosed in the patent US 4674419 by
Kopecky. An auxiliary press plate is disclosed which has somewhat more
aggressive wings for forming seed furrows. The press plate has a main flat

central surface which in operation is also angled downwards and rearwards
from a leading end to press down over a fertilizer furrow created by a
preceding
narrow opener. The wings have inner surfaces that taper laterally and


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downwardly from the central surface and outer surfaces that are generally
vertical. The wings inner surfaces also converge toward the rear of the plate
and thus in operation push some soil inwardly to close the fertilizer furrow.
Such an arrangement of surfaces is more aggressive at closing a fertilizer

furrow. However in conditions of heavy soil, when the soil is wet it tends to
be bulldozed by opener surfaces that are too aggressive or restrict passage of
the soil. The soil can bind to a furrow opener's surfaces. In these conditions
ground tools do not properly cover the fertilizer furrow and seed and
fertilizer
are scattered ineffectively. A planting tools fertilizer delivery openings can

even become blocked by soil that is pushed and builds up in front of the seed
furrow forming surfaces. In fact, the Anderson patent discloses using low
friction plastic as a press plate to prevent binding of soil. This can lead to
a
costly construction.

Flexicoil Ltd. also discloses furrow openers as shown on pages 45-47 of
their Product Book (volume 2). Two different openers are promoted for use in
different soil conditions. For heavy soil an HS paired row opener is promoted
having a main central surface that runs level in operation, and wings that
form a
seed furrow on each side of a fertilizer furrow. Since the main surface runs

level, it does not tend to restrict passage of heavy wet soils. It produces
paired
seed rows that are spaced apart about 2.5 inches. However if such an opener is
made with wings more widely spaced for wider space between seed rows, it has
been found that this shape may not perform aggressively enough to properly
close the fertilizer furrow in all conditions. An LS paired row opener is

promoted for use in light soils. It does not include a central pressing
surface
and rather the wing surfaces converge at a central edge forming bottom
surfaces in an inverted V arrangement. The central edge runs generally
horizontal. The wings also have leading surfaces that face slightly inward and


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downward for gathering soil and directing it inwards and downwards as it
passes beneath the opener, closing the fertilizer furrow. This shape however
has found to be too aggressive for heavy soils which becomes stuck between
the wings.


In heavy wet soils particularly, the soil tends to bind to seeding tool
surfaces between paired furrowing wings when those surfaces intersect at small
obtuse angles or have little or no radius between them so the intersection
forms
a more distinct edge. Soil binding is more problematic especially when the

intersection of the soil deflecting surfaces is angled or transverse to the
direction of travel, and even when the angle between surfaces is moderately
obtuse. Even with a surface smoothly curved, if there is significant concave
curvature in a plane in the direction of travel, the soil tends to bind in the
concavity.


It is desirable to have a paired row opener that works well without
compromise in a broader range of soil conditions without fouling, and one
which plants seed rows spaced widely while minimizing soil surface
disturbance.


It is desirable to have these paired rows spaced sufficiently wide, closer
to rows of adjacent tools, so there are not large spaces between rows planted
by
adjacent tools. Thus, during harvest there is an even stand of stubble to
support
a swath of cut crop above the ground for proper drying.


The prior art openers are generally quite narrow for seeding pairs of seed
rows that are spaced quite closely. Seedbed forming portions of these planting
tools generally operate within a space following a fertilizer furrow opening


CA 02302971 2007-08-03

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portion in which field trash has been cleared by the fertilizer opening
portion.
The seedbed forming portions therefor generally operate in soil that is
substantially clear of field trash. An additional challenge in designing
seedbed
forming sections that form wider spaced paired rows is that a wider paired row
opener will encounter field trash at it's outer edges which must not become
caught on the opener, fouling it's operation.

SUMMARY OF THE INVENTION

A basic object of the invention is to provide an improved paired row
opener that works well without compromise in a broader range of soil
conditions without fouling, and one which plants seed rows spaced widely
while minimizing soil surface disturbance.

Thus, in one aspect, the invention provides a ground engaging paired row
furrow
forming tool comprising a tool body having fore and aft ends, an outer edge on
each of
two opposing sides of the tool body; and a furrowing wing adjacent each of the
opposing
sides and protruding from bottom portions of the tool body; the tool body
having lower
surfaces including a central front surface portion which is angled upwards
towards the
fore end and a center passage being defined between the wings and which
passageway is
in part defined by a central rear surface portion which is capable of being
substantially
aligned fore to aft in a direction of travel T during operation of the ground
engaging tool,
wherein each wing includes: an outer surface extending downwards and inwards
from the
outer edge and a fore surface extending from the central front surface portion
downwards
and outwards to intersect with the outer surface at a furrowing edge portion
of the wing.

In a further aspect the invention provides a ground engaging paired row furrow
forming tool comprising a tool body having fore and aft ends, said body having
surface
portions defining an outer perimeter extending on each of two opposing sides
of the tool
body; a furrow forming wing adjacent each of the opposing sides and protruding
in
spaced apart relation from bottom portions of the tool body, each wing having
an outer


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surface extending downwards and inwards from the outer perimeter; and, a
forward
surface extending from the central front surface downwards and outwards to
intersect
with the outer surface at a furrow forming edge; and said tool body having
lower surfaces
including a central front surface portion which is angled upwards towards the
fore end
and which leads into a central passage extending rearwardly of the tool body
between the
wings, which passage is capable of being substantially aligned fore to aft in
a direction of
travel during operation of the furrow forming tool.

Other features and advantages of the invention will become apparent
from the following description of a preferred embodiment and the appended
claims.

BRIEF DESCRIPTION OF DRAWINGS

Fig. 1 is a side view of a hoe planting tool used for one pass fertilizing and
paired row seeding;

Fig.lA is a perspective view of the planting tool in Fig.1;

Fig.2 is a side view of a paired row furrowing and seeding tool;
Fig. 3 is a bottom view of the seeding tool in Fig.2;

Fig.4 is a view of a cross section taken through a line of symmetry of the
seeding tool in Fig.5;

Fig.5 is a rear view of the seeding tool in Fig.2;

Fig.6 is a top perspective view of the seeding tool in Fig.2;
Fig.7 is a bottom perspective view of the seeding tool in Fig.2;

Fig.8 shows agricultural implement on which a seeding tool as shown in Fig.2
is typically used.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

A hoe planting tool 1 has a mounting portion 14 for securing to a shank
2. A plurality of planting tools 1 and shanks 2 are typically attached to a
tillage implement 7 to fore and aft spaced toolbars as can be seen in Fig.8
with


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a plurality of them spaced transversely on each toolbar. The spaced
arrangement is selected to allow the best passage of field trash between
adjacent tools yet minimize soil ridging. Three to five toolbars are typically
provided, depending on the spacing desired between planted rows. The

implement 7 includes a hitch 9 for attachment to a vehicle such as a tractor
for
pulling the implement across a field. A product cart 8 can be towed behind the
tillage implement 7, or alternately between the tractor and implement 7. The
product cart delivers seed and fertilizer through distribution headers 5,6 and
distribution lines 3,4 to the planting tools 1 for planting in the soil.


As seen in Fig. l the planting tool 1 comprises a narrow soil opener 10
and a paired row opener 20. Possibly these could be made as an integral
opener, but narrow opener 10 is useful alone or in combination with other
openers. The hoe planting tool 1 is a combination tool for one pass
fertilizing

and paired row seeding. It operates in the soil at a set depth controlled by
the
tillage implement 7. In such operation the soil opener 10 places fertilizer
while
the paired row opener 20 places seed. The opener 10 includes a furrowing tip
13 secured to the frontal lower body portion 15 of the opener 10. The upper
body portion 14 of opener 10 is adapted for securing to a previously noted

shank 2, in a well known manner. The opener 10 receives fertilizer at inlet 11
and directs it from a lower outlet 12 into a fertilizer furrow formed by
furrowing tip 13.

The paired row seeding too120 includes two furrowing wings 30 as best
seen in Figs.4 and 5, protrude below the main body of seeding too120.

Seeding too120 receives seed at an inlet 21 and directs it from outlets 22
into
paired furrows formed by lower surfaces of wings 30. A passage from inlet 21
within seeding too120 divides into two passages having outlets 22 and


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randomly and evenly separates seed into a pair of streams to be placed in the
paired furrows. The seeding tool 20 is fastened to the rear of the opener 10
by
fasteners 19 in well-known manner.

The body of the seeding tool 20 generally includes lower surfaces and
upper surfaces, certain of which converge together to form outer edges 35
extending along the left and right sides of the seeding tool. These outer
edges
35 are curved inwardly and upwardly toward the front of the seeding tool 20.
This curvature provides for shedding of field trash which might otherwise

become caught on the seeding tool, in which event its operation is fouled and
proper furrows are not formed. Left and right tool body upper surfaces 34 are
angled upwards and inwards from outer edges 35 to the narrower central body
of the seeding too120 and extend generally straight fore and aft in the
direction
of operation. Rearward portions of the outer edges 3 5 are straight and the

seeding tool 20 is operated with these straight portions generally horizontal
and
at a depth in the soil at which the soil surface is at or above the edges 35
and
along the upper surfaces 34. The upper surfaces 34 in operation slip below the
soil surface with minimum disturbance of the soil surface.

Seeding too120 is also suitable in sizes that have a width exceeding the
trash cleared zone created by the soil opener 10. The outwardly curved outer
edges 35 prevent trash being pulled into and under the furrowing wings 30, and
prevent trash from remaining caught on the edges 35. Moving along edges 35
from front to rear it will be seen that they gradually curve into general

alignment with the direction of travel, so the parts of the outer edges 35
that are
subject to field trash are generally aligned with the direction of travel and
tend
to shed off the trash.


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The bottom side of seeding too120 comprises a central surface, the
profile of which can be seen in the cross section of Fig.4. The central
surface
includes a central front portion 24 and a central rear surface portion 23
(Fig. 3)
extending rearwardly therefrom in alignment with the direction of travel T.

(Figs. 3 and 7). Rear surface portion 23 is preferably at least about 3/4 inch
wide. The central rear surface 23 preferably is generally flat and level when
in
operation and the central front surface 24 is preferably angled slightly
upwards
and forwards relative to central rear surface 23 . These surface portions
23,24
are preferably blended together by a smoothly curved transition region 25
(Fig.

4) between them rather than having a distinct edge at which they intersect.
This
curvature is generally convex fore to aft and helps prevent soil from binding.
The central front surface 24 presses soil downwards at a decreasing rate as it
passes beneath the surface so that soil is not simultaneously subject to
pressure
from the wings 30 in a combination of forces that may otherwise cause relative

movement of the soil to stall. The tool is normally oriented in operation so
the
central front surface 24 is angled upwards from the horizontal. There is
preferably about 3/8 inch rise in the central front surface 24 from the rear
to the
front edge.

A furrow forming wing 30 as previously noted is positioned to each side
of the central surfaces 23,24 as seen in Figs.3 and Fig.5. Each wing 30
includes a forward lower surface 31, an inner surface 32, and an outer surface
33. The dihedral angle between inner surfaces 32 of wings 30 is shown as
being approximately 90 although this angle can be varied somewhat. The

wing forward surfaces 31 are arranged in flanking relation to the central
front
surface 24 and each surface 31 extends laterally, rearwards and downwards
from the central front surface 24. The forward surfaces 31 are therefore
inclined such as to slightly face each other, and they taper inwards and


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rearwards so in operation they direct some soil inwards and downwards over
the fertilizer furrow formed by the soil opener 10. The wing inner surfaces 32
extend outwards and downwards from the central rear surface 23, and intersect
with the forward surface 31. The wing outer surfaces 33 extend inwards and

downwards from outer edges 35 to intersect with surfaces 31 and 32 and
defining furrow forming edges 36 which are angled inwardly from fore to aft
before reaching the extension edges 36 ' which are parallel to each other and
to
the travel direction T. In Fig. 5 rear view it can be seen that wing inner
surfaces 32 and outer surfaces 33 converge to form V-shape profiles which

operate to form corresponding V-shaped furrows. The tips of the V-shapes
(which are defined by the extension edges 36 ') are preferably spaced apart at
least about 3 inches. The wing inner and outer surfaces 32, 33 extend
generally parallel to the direction of travel T thus giving the wings 30 a
longer
wear life in which they maintain their furrow forming profile. A forward part

of each wing outer surface 33 is curved to follow the associated curved outer
edge 35. Preferably the forward surface 31 is curved toward the rear to blend
with inner surface 32 so there is no distinct edge along the intersection of
these
surfaces. The central front and rear surfaces 23,24 also blend along curved
intersections with wing forward surfaces 31 and wing inner surfaces 32 so
there

are no distinct edges of intersection. This promotes smooth soil flow and
prevents soil binding which often is evident where surfaces intersect at
edges,
particularly at sharper angles.

The edges 36 of the forward surfaces 31 appear as substantially straight
in a side profile as can be seen in Fig.2 and Fig.4. This is generally the
same
across the forward surfaces 31 and through the intersections with the central
front surface 24 so that there is little to no concave curvature or angles in
a
plane in the direction of travel, in which soil can hang up and bind.


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Central rear surface 23 provides a free central passage between wings 30
where the soil is not simultaneously subject to downward deflection as the V-
shaped furrows are being formed. Preferably the central rear surface 23
provides a space of about 3/4 inch minimum between the bases of the wings 30

to provide a free passage for soil flow. (This is in contrast to certain prior
art
designs in which a surface between furrow forming wings continues to deflect
soil downwards during furrow formation.) A small fillet or radius is formed
between the wing surfaces 32 and central rear surface 23 to provide free

passage of soil.

Seed passage outlets 22, best seen in Fig. 5, are positioned behind each
wing 30 with the outlets terminating above the lowermost edge 36 of each
wing, preferably a distance of 3/4 inch, which provides good control of
material
placement and prevents soil from blocking the outlets.


In operation, the seeding tool 20 is generally oriented with central rear
surface 23 substantially horizontal (see Fig. 4). It may be slightly trimmed
from this orientation with central rear surface 23 angled one or two degrees
upward or downward from front to rear, depending on soil conditions. This can

be achieved by adjusting a stop on a tripping device supporting the shank 2,
or
by using shims in mounting the ground engaging tool 1 to change its angle
relative to the shank 2.

Although the present invention has been described with reference to

preferred embodiments, those skilled in the art will recognize that changes
may
be made without departing from the spirit and scope of the invention.

Representative Drawing
A single figure which represents the drawing illustrating the invention.
Administrative Status

For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Administrative Status , Maintenance Fee  and Payment History  should be consulted.

Administrative Status

Title Date
Forecasted Issue Date 2008-09-02
(22) Filed 2000-03-29
(41) Open to Public Inspection 2001-09-29
Examination Requested 2005-02-03
(45) Issued 2008-09-02
Expired 2020-03-29

Abandonment History

There is no abandonment history.

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Application Fee $300.00 2000-03-29
Registration of a document - section 124 $100.00 2000-04-17
Maintenance Fee - Application - New Act 2 2002-03-29 $100.00 2002-01-10
Maintenance Fee - Application - New Act 3 2003-03-31 $100.00 2003-03-14
Maintenance Fee - Application - New Act 4 2004-03-29 $100.00 2004-03-15
Request for Examination $800.00 2005-02-03
Maintenance Fee - Application - New Act 5 2005-03-29 $200.00 2005-03-15
Maintenance Fee - Application - New Act 6 2006-03-29 $200.00 2006-02-21
Registration of a document - section 124 $100.00 2006-04-11
Maintenance Fee - Application - New Act 7 2007-03-29 $200.00 2006-12-07
Maintenance Fee - Application - New Act 8 2008-03-31 $200.00 2008-03-14
Final Fee $300.00 2008-06-17
Maintenance Fee - Patent - New Act 9 2009-03-30 $200.00 2009-03-13
Maintenance Fee - Patent - New Act 10 2010-03-29 $250.00 2010-03-15
Maintenance Fee - Patent - New Act 11 2011-03-29 $250.00 2011-02-24
Maintenance Fee - Patent - New Act 12 2012-03-29 $250.00 2012-02-10
Maintenance Fee - Patent - New Act 13 2013-04-02 $250.00 2013-02-08
Maintenance Fee - Patent - New Act 14 2014-03-31 $250.00 2014-02-19
Maintenance Fee - Patent - New Act 15 2015-03-30 $450.00 2015-02-09
Maintenance Fee - Patent - New Act 16 2016-03-29 $450.00 2016-02-10
Maintenance Fee - Patent - New Act 17 2017-03-29 $450.00 2017-02-13
Maintenance Fee - Patent - New Act 18 2018-03-29 $450.00 2018-02-06
Maintenance Fee - Patent - New Act 19 2019-03-29 $450.00 2019-02-08
Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
CNH CANADA, LTD./LTEE.
Past Owners on Record
FLEXI-COIL LTD.
HENRY, JAMES WAYNE
SWAB, GERRY STEVEN
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
Documents

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Document
Description 
Date
(yyyy-mm-dd) 
Number of pages   Size of Image (KB) 
Representative Drawing 2001-09-13 1 13
Abstract 2000-03-29 1 26
Description 2000-03-29 11 529
Claims 2000-03-29 5 178
Drawings 2000-03-29 6 146
Cover Page 2001-09-25 1 44
Claims 2007-08-03 4 147
Description 2007-08-03 11 535
Representative Drawing 2008-08-14 1 14
Cover Page 2008-08-14 1 45
Correspondence 2000-04-28 1 2
Assignment 2000-03-29 2 84
Assignment 2000-04-17 2 91
Assignment 2001-03-20 1 23
Fees 2003-03-14 1 31
Fees 2002-01-10 1 26
Fees 2004-03-15 1 29
Prosecution-Amendment 2005-02-03 1 31
Fees 2005-03-15 1 28
Prosecution-Amendment 2005-04-21 1 32
Assignment 2006-04-11 7 180
Prosecution-Amendment 2007-02-12 2 40
Prosecution-Amendment 2007-08-03 8 305
Correspondence 2008-06-17 2 52
Fees 2008-03-14 1 39
Fees 2010-03-15 1 35