A crawler type crane having a base carrier unit having a control unit associated therewith and an upper portion assembly having a boom portion coupled at end to the base carrier unit and to a jib portion at an opposed end. The boom portion includes one or more selected boom sections that are articulatable relative to each other. The crane also includes a multi-function attachment unit that is coupled to the jib portion and has a grappling unit for grasping a work piece and a saw attachment unit for cutting the workpiece. The crane can also include a first fluid regulating device coupled to the jib portion for regulating a fluid to the jib portion and to the multi-function attachment unit and a second fluid regulating device coupled to the boom portion for regulating a fluid to the winch element and to the multi-function attachment unit.

This wire saw machine having a dust collecting apparatus comprises a main roller for moving a wire by rotation; a first pulley system including a first upper dust collecting roller, a first lower dust collecting roller, and a first support roller; a second pulley system including a second upper dust collecting roller, a second lower dust collecting roller, and a second support roller; and a dust collecting unit which is provided under the first pulley system and the second pulley system to collect foreign substances that escape from the first pulley system and the second pulley system.

A cutting apparatus includes a wire cutting member, a plurality of wheels about which the wire cutting member is at least partially wrapped, a first arm member supporting at least one of the plurality of wheels, and a second arm member supporting at least one of the plurality of wheels. The first arm member and the second arm member may be moveable between a first position, in which the cutting apparatus has a first size, and a second position, in which the cutting apparatus has a second size larger than the first size. A wire saw includes an adjustment member coupled to at least one of a plurality of wheels for moving the at least one of the plurality of wheels to adjust a tension of a wire cutting member. A wire saw includes a visual indicator for indicating an amount of tension applied to a wire cutting member.

The present invention relates to a wire cutting system and method for subsea cutting of large structures (6). The system includes two feeding towers (2) with feeding tower first ends secured into a seabed floor. A crossbeam (1) is located between the two feeding towers (2). Wire feeding trolleys (8) are connected to the feeding towers (2), whereby the wire feeding trolleys (8) are allowed to move a cutting distance along the feeding towers. A cutting wire (4) traverses between the wire feeding trolleys.

The problem of penetrating through nets and other objects is solved by cutting the object using various cutter systems, which include, for example a track and a moving carriage containing a cutter, a stationary carriage with a fixed or rotating arm, and/or abrasive cutters. The object is cut by a severing, slicing, or wearing action caused by a moveable blade or abrasive surface. An underwater vehicle incorporating an embodiment of the cutter system can cut a sufficiently large opening in the object to allow the vehicle to pass through.

Some embodiments include an apparatus for cutting a pile. In some embodiments, the apparatus includes a shaft module including a cylindrical shaft including a first cavity configured to receive the pile. In some embodiments, the apparatus also includes a cutting module coupled to the shaft module, the cutting module including a second cavity configured to receive the pile, clamps configured to clamp onto the pile, and a saw configured to cut the pile. In some embodiments, the apparatus also includes a drilling module coupled to the cutting module, the drilling module including blades to burrow into an earth surface.

A cast system, which includes: a padding layer configured to be disposed within a cast and support a portion of a patient's limb; a casting material which hardens around the padding layer and form an outer shell of the cast surrounding the patient's limb; and a wire saw configured to be disposed within the cast and extend along a longitudinal axis of the cast. The wire saw has a cutting surface which is at least partly enclosed by a plastic sheath. By enclosing the wire saw cutting surface in a plastic sheath, the saw does not lock up during the cutting operation, cutting is facilitated, allowing for easy and safe removal of the cast by pulling at least one end of the wire saw so as to cut through the outer shell of the cast.

This process for manufacturing a closed loop of cutting wire comprises manufacturing a cutting wire comprising a central core extending continuously between two free ends. The central core having a tensile strength higher than 1400 MPa. The process includes welding the two free ends together to form the closed loop of cutting wire, in which: the manufacture of the cutting wire comprises making the central core from a material that is solid-state weldable. The welding is a solid-state welding operation comprising crushing, at a temperature below the melting point of the material of the central core, one of the free ends against the other of its free ends until the two ends have interpenetrated and formed a single uniform body of material.

An apparatus for detecting the breakage of at least one cutting element disposed in a guide includes at least one sliding piece which is linearly displaceable relative to the guide and which can be connected to the cutting element for holding the cutting element. A force applying element is provided to produce a force on the sliding piece so that if the cutting element breaks, the sliding piece is displaced relative to the guide. A sensor detects such a displacement of the sliding piece relative to the guide. A system having the detection device is also provided.

A method is provided for removing an abandoned marine platform from a seabed. The platform extends below the seabed mud line. In order to remove the platform, a frame is provided having a perimeter that surrounds an open center. The frame is lowered over the platform wherein the platform occupies the open center portion. A movable cutter cable is fitted to the frame. At least a part of the cutter cable is positioned below the mud line. The cutter is moved relative to the frame to cut the platform below the mud line. Such movement can be a back and forth movement wherein the cutter cable moves in a first direction, stops and then moves in a second direction that is generally opposite the first direction. A lifting device can employ two vessels and two frames, each frame bridging from one vessel to the other. Winches on the vessel can be used to provide movement to the cutter cable. These same winches can take up cable slack as cutting moves from one platform member (e.g. leg, jacket leg, piling, etc) to another.