A land preparation implement includes a rotatable drum assembly that includes a tool assembly. The tool assembly includes a tool holder and a tool. The tool includes a plurality of cleats. The tool holder includes a plurality of cleat supports. The cleats and the cleat supports cooperate to facilitate releasable coupling of the tool to the tool holder.

A cutting device for engaging a rock face includes a disc body supported for rotation about an axis of rotation, and a plurality of peripheral portions removably secured to the disc body. Each of the peripheral portions including a plurality of cutting bits positioned on a peripheral edge. The peripheral edge of each peripheral portion is aligned with the peripheral edges of adjacent peripheral portions.

A wear cap for use on an earth working roil for mining, construction and public works machines such as crushers, surface miners, milling machines and the like includes a working end and a rear mounting end. The rear mounting end including a pair of top and bottom rearwardly extending protrusions, a retainer, and a cavity having side stabilizing surfaces and a top and bottom rail or groove to support the wear cap on a holder mounted to the earth working roll.

A method for connecting functional elements (14) to a shaft (10, having the following steps: (a) forming elevations (12) for receiving the functional elements (14), said elevations (12) being machined out of the shaft (10) by removing material, and (b) welding the functional elements (14) to the elevations (12) on the shaft (10).

A tooth with a retaining system for retaining the tooth in a receiving portion of an adapter in a cutting system comprises a first holding system to releasably retain the tooth to the adapter; and a second holding system to tension and secure the tooth with respect to the adapter.

A system for laying an underwater pipeline on a bed of a body of water has a construction site to form a string of an underwater pipeline, the string being defined by a curved portion shaped substantially like a portion of the bed of the body of water characterized by an abrupt change in slope; at least two vessels to transfer, in the body of water, the string from the construction site to a laying site in the body of water and substantially on the vertical of a path along which to lay the string; and a plurality of floating devices configured to be coupled to the string and so as to selectively support and sink the string in the body of water, and progressively lay the string along the path on the bed of the body of water.

The invention relates to an excavating finger of a bucket that is designed to be fitted to an excavating chain for a device for excavating ballast beneath a railroad track, the finger being in one piece and comprising: a retention portion that is rotationally symmetric about a reference axis of the finger, the retention portion being designed to be accommodated in a cylindrical cavity of the bucket; and a tip designed to project out of the cylindrical cavity of the bucket, the excavating finger (132) wherein the retention portion comprises at least one annular channel that is configured to receive at least part of an immobilizing rod, designed to provide axial retention of the retention portion in the cylindrical cavity in such a way that the finger is free to rotate about its reference axis.

A cutter tooth assembly includes a cutter tooth having a shank portion and a cutting portion, and a cutter tooth holder having a pocket for receiving at least a portion of the shank portion of the cutter tooth. The shank portion of the cutter tooth has a plurality of tapered surfaces formed at a first angle with respect to a vertical axis of the cutter tooth, and the pocket of the cutter tooth holder has a plurality of tapered surfaces formed at a second angle with respect to a vertical axis of the cutter tooth holder that cooperate with the plurality of tapered surfaces of the shank portion of the cutter tooth to minimize tolerances between the shank portion of the cutter tooth and the pocket of the cutter tooth holder during wear of the cutter tooth assembly.

The present disclosure relates generally to systems and methods for sensing wear in machines designed to reduce or break-down material. More particularly, the present disclosure relates to systems and methods for sensing wear of reducing elements used by excavation machines such as surface excavation machines. The present disclosure relates to a wear sensing system including a multi-level wear sensor protection system. The multi-level wear sensor protection system includes a first level of protection, a second level of protection, and a third level of protection.

Mineral bits (10, 100) and associated mounts (30, 116, 200) for use during excavation and mining operations are disclosed. An exemplary bit (10) has a front region (12) and an opposite rear region (14) and comprises a head portion (16) and a mounting portion (18) secured to the head portion (16). The mounting portion (18) can be configured to be releasably retained by a mount (30). A rounded transition (22) disposed in the front region (12) of the bit between the head portion (16) and the mounting portion (18) provides a clearance (C) between the head portion (16) and the mount (16). Mineral bits (10, 100) disclosed can be inserted into and withdrawn from mounts (30, 116, 200) by linear and/or rotational movement.