A remote-controlled powder fire extinguishing system includes a robotic mobile unit including a powder storage unit, a powder fluidization system, and a powder distribution system, the mobile unit being configured to distribute a fluidized powder onto a location affected by a fire, a remote control center, operable outside of the location affected by the fire, including a controller programmed to remotely communicate with and control the mobile unit, the powder storage unit, the powder fluidization system, and the powder distribution system, and a device configured to provide wireless connection between the mobile unit and the remote control center.

Provided is a lightweight crawler unit which is capable of swiveling, suitable for a trolley for bad roads, and used for transportation in muddy places such as snowy roads, sandy ground, and fields, and disaster sites. A crawler includes a plurality of inner attachments provided inside thereof toward a frame to have a band-shape, overhang edges 70 protruding in a left and right direction of a rail provided on a circumference of the frame, and overhang edges 34 protruding in a left and right direction of each of the inner attachments, in a space K enclosed between the overhang edges 34 facing each other, the overhang edges 70 are inserted, the overhang edges 34, 70 are set in a positional relation in which they overlap with each other in an up and down direction, and the crawler circulates around pulleys, while the inner attachments are restricted along the rail.

The tracked stroller frame device may allow a user to take a stroller with them when camping, hiking, or otherwise travelling over rough terrain. The device implements a continuous track system for providing additional tractive area and reducing or eliminating getting stuck on uneven surfaces, and may include a motorized mechanism for providing driving force. The tracked stroller device allows a user to take a baby or young child with them without carrying the baby or young child. The device may be collapsible for ease of storage and transporting and may incorporate a storage area to allow for transporting of other items. A braking system may also be implemented to slow down the device or keep it parked.

A track driven machine is provided comprising an undercarriage drive system that includes a track, and a motor that powers the drive system, wherein the undercarriage drive system further includes at least one of a capless track roller mounting system and a central unibeam track roller mounting system.

A track driven machine is provided comprising an undercarriage drive system that includes a track, and a motor that powers the drive system, wherein the undercarriage drive system further includes at least one of a capless track roller mounting system and a central unibeam track roller mounting system.

A pressure system of a suspension device for an amphibious vehicle includes: a pump configured to discharge a working fluid; a first control valve disposed in a first flow path extending between the pump and a first hydraulic chamber, the first control valve being configured to control supply of the working fluid from the pump to the first hydraulic chamber; a pilot check valve disposed in a portion of the first flow path which extends between the first hydraulic chamber and the first control valve, the pilot check valve being configured to open and close the first flow path in accordance with a pilot pressure; and a second control valve disposed in a pilot flow path extending between the pump and the pilot check valve, the second control valve being configured to control supply of the pilot pressure to the pilot check valve.

In one aspect of the present invention is provided an attachment device (100) for attachment of a trailing arm (54a) to a track support beam (22) intended to be connected, via said trailing arm (54a), to a center beam (30, 32) or other structural element situated between two track assemblies (21) of a tracked vehicle (10). The attachment device (100) is secured to the track support beam (22) and configured to attach the trailing arm (54a) to the track support beam (22) via an axis (X2) running above and substantially centrally along an upper side of the track support beam (22), in the longitudinal direction of the track support beam. In this way, a robust, structurally strong, suspension-admitting attachment device that is easy to manufacture and assemble is achieved. In another aspect of the invention is provided a tracked vehicle (10) comprising such an attachment device (100) and in a further aspect of the invention a method of manufacturing a track support beam (22) comprising such an attachment device (100).

In one aspect of the present invention is provided an attachment device (100) for attachment of a trailing arm (54a) to a track support beam (22) intended to be connected, via said trailing arm (54a), to a center beam (30, 32) or other structural element situated between two track assemblies (21) of a tracked vehicle (10). The attachment device (100) is secured to the track support beam (22) and configured to attach the trailing arm (54a) to the track support beam (22) via an axis (X2) running above and substantially centrally along an upper side of the track support beam (22), in the longitudinal direction of the track support beam. In this way, a robust, structurally strong, suspension-admitting attachment device that is easy to manufacture and assemble is achieved. In another aspect of the invention is provided a tracked vehicle (10) comprising such an attachment device (100) and in a further aspect of the invention a method of manufacturing a track support beam (22) comprising such an attachment device (100).

The present invention relates to an inspection vehicle configured to inspect a confined space. The inspection vehicle includes an elongate rigid body including a planar upper surface and drive modules along either side of the body. Each drive module includes an endless track, an upper surface of the endless tracks is positioned below a height of the planar upper surface so that the planar upper surface engages an obstacle in preference to the endless tracks; front ones of the endless tracks project forwardly of the body so that the front endless tracks engage an obstacle in preference to the body; sensors around the inspection vehicle to sense the confined space; a communications module to provide sensor data to remote processing systems; and receive control signals; processing devices to control the drive modules to allow the inspection vehicle to traverse the confined space.

The present invention relates to an inspection vehicle configured to inspect a confined space. The inspection vehicle includes an elongate rigid body including a planar upper surface and drive modules along either side of the body. Each drive module includes an endless track, an upper surface of the endless tracks is positioned below a height of the planar upper surface so that the planar upper surface engages an obstacle in preference to the endless tracks; front ones of the endless tracks project forwardly of the body so that the front endless tracks engage an obstacle in preference to the body; sensors around the inspection vehicle to sense the confined space; a communications module to provide sensor data to remote processing systems; and receive control signals; processing devices to control the drive modules to allow the inspection vehicle to traverse the confined space.