Soil opener
First Claim
1. A soil opener for driving through soil in a direction of travel, the soil opener comprising:
- a leg; and
first and second soil-cutting members mounted on the leg;
wherein;
the first soil-cutting member has a first soil-engaging surface inclined at a first angle to a perpendicular to the soil surface when viewed along the direction of travel, the first angle being greater than zero; and
the second soil-cutting member comprises a rotating disc and has a second soil-engaging surface that faces away from, and in a substantially opposite direction to, the first soil-engaging surface;
wherein;
both the first and second soil-cutting members are inclined to the same side of a perpendicular to the soil surface, wherein the second soil-cutting rotating disc lies parallel to the direction of travel when viewed along a perpendicular to the soil surface when viewed along the direction of travel and with the second soil-engaging surface being inclined at a third angle to a perpendicular to the soil surface when viewed along the direction of travel, the third angle being greater than zero and in the same direction as the first angle; and
wherein the first soil-engaging surface is additionally inclined at a second angle to the direction of travel when viewed along a perpendicular to the soil surface, the second angle being greater than zero, whereby the first and second soil-cutting members are mounted on the leg so as to be substantially coincident in the direction of travel.
1 Assignment
0 Petitions
Accused Products
Abstract
A soil opener comprises first and second soil-cutting members. The first member has a first soil-engaging surface inclined at a first angle perpendicular to the soil surface when viewed along a travel direction, the first angle being greater than zero, and at a second angle to the travel direction when viewed along a perpendicular, the second angle being greater than zero. The second member comprises a rotating disc and has a second soil-engaging surface that faces away from, and in a substantially opposite direction to, the first soil-engaging surface, the second soil-engaging surface being inclined at a third angle perpendicular when viewed along the travel direction, the third angle being greater than zero and in the same sense as the first angle.
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Citations
27 Claims
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1. A soil opener for driving through soil in a direction of travel, the soil opener comprising:
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a leg; and first and second soil-cutting members mounted on the leg;
wherein;the first soil-cutting member has a first soil-engaging surface inclined at a first angle to a perpendicular to the soil surface when viewed along the direction of travel, the first angle being greater than zero; and the second soil-cutting member comprises a rotating disc and has a second soil-engaging surface that faces away from, and in a substantially opposite direction to, the first soil-engaging surface; wherein; both the first and second soil-cutting members are inclined to the same side of a perpendicular to the soil surface, wherein the second soil-cutting rotating disc lies parallel to the direction of travel when viewed along a perpendicular to the soil surface when viewed along the direction of travel and with the second soil-engaging surface being inclined at a third angle to a perpendicular to the soil surface when viewed along the direction of travel, the third angle being greater than zero and in the same direction as the first angle; and wherein the first soil-engaging surface is additionally inclined at a second angle to the direction of travel when viewed along a perpendicular to the soil surface, the second angle being greater than zero, whereby the first and second soil-cutting members are mounted on the leg so as to be substantially coincident in the direction of travel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A soil opener for driving through soil in a direction of travel, the soil opener comprising:
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a first soil-cutting member having a first soil-engaging surface; a second soil-cutting member comprising a rotating disc having a second soil-engaging surface that faces away from, and in a substantially opposite direction to, the first soil-engaging surface; and at least one of the first and second soil-engaging surfaces being inclined at a non-zero angle to a perpendicular to the soil surface when viewed in the direction of travel; characterized in that the first and second soil-engaging members are mounted for castoring about an axis inclined downward in the direction of travel. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification