A crane mat is disclosed having a plurality of panels of lumber positioned in alternating transverse directions with respect to one another, where the top and bottom panels are oriented parallel to the direction of vehicular traffic. The top and bottom panels may include a plurality of spaced apart grooves extending longitudinally from a first longitudinal end of the crane mat to a second longitudinal end of the crane mat for enhancing traction of a vehicle when traversing across the crane mat by transporting rain or moisture off the mat, or for receiving mud or other debris. The crane mat may include a plurality of edge protectors positioned on respective sides of the crane mat to protect the crane mat from handling damage. In various embodiments, the crane mat may be manufactured using either softwood, hardwood, or any combination of softwood and hardwood.

A deicing system may include one or more walkway cassettes, a temperature control element, and a control unit. Each walkway cassette may include a casing and a heat tracing; cable in good thermal contact with the casing. The temperature control element may include a comparatively smaller casing and a heat tracing cable in good thermal contact with the casing, and may exhibit similar heat loss characteristics to the walkway cassettes. The temperature control element may include a temperature sensor on a top surface of its casing, which may generate temperature data and send the temperature data to the control unit. The control unit may provide power to the temperature control element and the walkway cassette(s) in parallel based on the temperature data. The temperature control element may be placed in proximity to the walkway cassette(s), and may be exposed to substantially the same environmental conditions as the walkway cassettes.

Improved containment mats and systems of containment mats may include multiple adjoining mats with a top surface and a bottom surface. The multiple mats may provide a modular structural mat system that may be installed at a drill site, with multiple mats placed adjacent to each other with a lap joint connecting adjacent mats. A geotextile may be used to cover the lap joints and a coating applied to the geotextile. Such a system may provide containment of potential spills, a reliable working surface for drilling operations, and relatively fast and less expensive installation.

Improved containment mats and systems of containment mats may include multiple adjoining mats with a top surface and a bottom surface. The multiple mats may provide a modular structural mat system that may be installed at a drill site, with multiple mats placed adjacent to each other with a lap joint connecting adjacent mats. A geotextile may be used to cover the lap joints and a coating applied to the geotextile. Such a system may provide containment of potential spills, a reliable working surface for drilling operations, and relatively fast and less expensive installation.

A deployable sidewalk has a plurality of walking surfaces. Each walking surface is a plastic tube having a longitudinal axis, a first lateral end, a second lateral end, and a pair of axial holes therethrough. Each hole is perpendicular to the longitudinal axis and spaced away from the first lateral end and the second lateral end. A flexible tube extends through each hole for joining the walking surfaces together. A spacer fits over the flexible tube between adjacent walking surfaces. Also disclosed is method of providing a temporary sidewalk including: rolling out a deployable sidewalk, described above, and thereafter walking on the walking surface of the deployable sidewalk.

A module mat system with first layer that is joined to a second layer by fusion welding, hot welding, hand welding, seam welding, heat pressing, or other methods know to those having skill in the art. Each layer has a central core with a first cellular structure formed from ribs extending from the interior surface. The cross section of the ribs in the central core of the first layer matches the cross section of the ribs in the central core of the second layer such that when fusion welded together the ribs of the central core of the first layer weld to the ribs of the central core of the second layer.

A tile, which may be a component of a modular flooring system, includes a plurality of cells on its underside, adjacent cells being interconnected to form two sets of channels parallel to the upper surface and open to the underside of the tile. The tile may have recesses in its upper surface, into which inserts can be pressed to form a decorative pattern. The channels may be used as ducting for cables under the floor surface. The cables can be held in place by clips that bridge between a pair of the cells. The cables may include a lighting cable, which can be arranged to transmit light to the upper surface of the tile through inserts that are translucent.

A polymeric structure includes a first polymeric component and a second polymeric component, the first polymeric component including a first mating surface and an opposing first free surface and the second polymeric component including a second mating surface and an opposing second free surface. The first polymeric component and the second polymeric component are positioned with the first mating surface facing the second mating surface. A charge of molten polymer is disposed between the first mating surface and the second mating surface. A compressive force is applied to the first free surface of the first polymeric component and to the second free surface of the second polymeric component in order to secure the first polymeric component to the second polymeric component in order to form the polymeric structure. The polymeric structure may be a construction mat.

The subject of the invention is a support panel with cellular core structure and the manufacturing process for the support panel with cellular core structure which solve the technical problems of: facilitating the manufacture of the product, ensuring compactness of individual panels and manufacturing support panels with cellular structure (1) in a single step. The support plate with cellular structure (1) comprises at least the upper solid surface (2), the lower solid surface (3) and the cellular structure (4), whereby all of these components are made of any thermoplastic material; however, all of the components are made of the same material. The cellular structure (4) is constructed with energy directors (5) to prevent spacing between the cellular structure (4), the upper solid surface (2) and the lower solid surface (3). The pre-formed cellular core (4) is placed on the levelled thermoplastic material used to form the lower solid surface, after which the material is applied over the cellular core (4) up to the depth required to form the lateral surfaces and the upper solid surface (2). After heating and pressing the material, the support panel with cellular structure (1) is cooled under pressure, and then it is removed from the press mould.

A fastening device system for connection at least a first and a second overlapping mats placed on the ground wherein the first mat is aligned over at least one connecting hole of the second mat, the fastening device system comprising, a housing having a first half and a second half wherein the first half and second half are attached together forming the housing. A pin having a foot disposed at the lower end thereof and a shaft having a helical shelf that engages the helical channel of the housing. The pin is configured so that when it rotates 90° in one direction to the housing the pin draws the foot closer to bottom of housing and provides at least one locking position of the foot and locking the foot in place.