Patent ID: 9303957
Filing Date: 2016-04-05
CPC Classification: A01B,F41H

Claim Text:
1. A ground engaging assembly for applying force to the ground, the assembly comprising: a body adapted to be mounted to a vehicle for moving the assembly; and at least one support device adapted to support a plurality of ground engaging members for applying force to the ground, said support device comprising at least one respective first support member, a plurality of second support members and a plurality of third support members, wherein a plurality of said third support members are adapted to be connected to respective said ground engaging members and at least one said first support member such that each said ground engaging member is connected to the corresponding said first support member by means of a respective said third support member pivotably mounted to said first support member, and wherein each said second support member comprises at least one piston, connected to one of said first support member and a respective said third support member and sliding within a respective piston cylinder, connected to the other of said first support member and said respective third support member, the piston cylinders being interconnected to form a single pressure chamber applying the same pressure to each said piston to resist movement of said ground engaging members in a manner causing compression of fluid in said pressure chamber; wherein at least one said first support member is pivotably connected to a respective first connecting member about a respective first axis, said respective first connecting member is mounted to said body about a respective second axis, said second axis extends through a plane containing said first axis and is not perpendicular to said plane containing said first axis, and said first axis extends through a plane containing said second axis and is not perpendicular to said plane containing said second axis, such that pivoting movement of said first support member relative to the body about said first and second axes, as a result of a first torque applied to the assembly about an axis parallel to a direction of travel of the vehicle, causes engagement of the corresponding said ground engaging members with the ground to cause a second torque to be applied to the assembly, and wherein a component of said second torque opposes said first torque.