A work machine is formed from a self-propelled land travel vehicle and an attachment. The vehicle and attachment have interlocking coupling assemblies. The attachment has a positioning arm, a pivot fixture and a ground-engageable frame. The positioning arm and frame allow the attachment to pivot about the pivot fixture to couple and decouple with the vehicle. Coupling and decoupling of the vehicle and apparatus can be achieved without the use of separate lifting equipment.

A boom assembly for a trencher having a boom frame member, a boom drive assembly and a plurality of boom arm assemblies. The boom frame member configured to be attachable to the trencher. The boom drive assembly attached to the boom frame member, having an output shaft that is rotatably actuatable. The plurality of boom arm assemblies extending from the boom frame member, the plurality of boom arm assemblies including at least a first boom arm assembly and a second boom arm assembly. The first and second boom arm assemblies can be of differing length, width, angle and may operate at different speeds.

A vehicle having a long track or wheel-trail wheel combination on one side and a smaller ground engaging member, such as a short track or wheel on the other. The vehicle has a work attachment on one end of as frame, which is provided clearance on the side of the vehicle with the short track or wheel. A control system is provided to allow an operator to properly control a direction of the vehicle despite the fact that different forces may be required to operate the long track and the short track or wheel.

Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements, and tool wear.

Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements, and tool wear.

A work machine is formed from a self-propelled land travel vehicle and an attachment. The vehicle and attachment have interlocking coupling assemblies. The attachment has a positioning arm, a pivot fixture and a ground-engageable frame. The positioning arm and frame allow the attachment to pivot about the pivot fixture to couple and decouple with the vehicle. Coupling and decoupling of the vehicle and apparatus can be achieved without the use of separate lifting equipment.

A cutting system includes a rotatable transport member, a plurality of tool holders, and a plurality of cutting tools. A plurality of tool holders is attached to the rotatable transport member. The plurality of tool holders is spaced apart along the rotatable transport member and configured to passively rotate relative to the rotatable transport member. The plurality of cutting tools is rotatably attached to each tool holder. Each of the cutting tools is configured to passively rotate around different axis than an axis around which the tool holder passively rotates.

A cutting system includes a rotatable transport member, a plurality of tool holders, and a plurality of cutting tools. A plurality of tool holders is attached to the rotatable transport member. The plurality of tool holders is spaced apart along the rotatable transport member and configured to passively rotate relative to the rotatable transport member. The plurality of cutting tools is rotatably attached to each tool holder. Each of the cutting tools is configured to passively rotate around different axis than an axis around which the tool holder passively rotates.

A trenching device rotating a trenching chain through a substrate to form a trench. The trenching device including a power unit, a drive unit including a belt drive system, and a trenching unit including a trenching chain and configured to rotate the trenching chain about a trenching bar.

A universal cutter assembly comprising a transport device carrying a plurality of freewheeling cutters mounted to freely rotate about an axis, where the axis is canted about two angles with respect to the surface being cut and a line of action imparted by the transport device.