Abstract: A stackable mat includes a first industrial mat, a second industrial mat and an internal support structure. The mats each have a plurality of layers or plies of construction materials for forming the upper and lower portions, respectively, of the stacker mat, and have a thickness that provide support for vehicle movement thereover. The internal support structure includes a truss or elongated members for retaining the first and second mats in parallel spaced relation at a distance that is greater than the thickness of the first industrial mat. Preferably, the internal support structure and the second industrial mat or both the first and second industrial mats are configured with sufficient openings to allow water to flow therethrough so that the stacker mat may be placed in wet areas to form a temporary roadway or platform.

Abstract: A mat that includes first and second side beams, a core structure located between and connected to the side beams, with the support structure including longitudinal members and having a height that is less than that of the side beams, a plurality of joining rods that attach the side beams to the support structure, with the joining rods passing through the sides of the side beams and the sides of the longitudinal members of the support structure; one or more elongated members attached to the upper portion of the support structure to form with the beams the top surface of the mat, and one or more elongated members attached to the lower portion of the support structure to form with the beams the bottom surface of the mat. If desired, steel plates can be provided between the beams and longitudinal members to increase the strength and ruggedness of the mat.

Abstract: An industrial mat having a core construction that provides strength and rigidity to the mat, an encapsulation of a durable skin of a thermoplastic, thermosetting or elastomeric material that surrounds the core construction, and upper and/or lower surfaces formed by a plurality of elongated members. The elongated members of the upper and/or lower surfaces are advantageously arranged in spaced relation in at least one layer and are attached together or to the core construction for protecting the durable skin from abrasion and impact during transport, installation and use of the industrial mat. The resulting industrial mat has a load bearing capacity that is able to withstand a load of at least 600 to 1000 psi without permanent deformation. The mats of the invention typically have a width of 2 to 12 feet, a length of 2 to 40 feet and an overall thickness of 2 to 18 inches.

Abstract: An industrial mat that has a support core configured and arranged to support other components of the mat; and upper and lower layers that provide upper and lower surfaces of the mat, with the layers protecting the support core. Bumpers are provided upon the longitudinal sides of the core, the front and rear end sides of the core, or upon all sides to protect the core from damage due to transport or installation of the mat. The bumpers are typically made of wood, or of a plastic or elastomeric material and have a shape that absorbs impact and shock forces. The mat also includes lifting elements of D-shaped rings, O-shaped rings, chains, or cables attached to the upper or lower layer or the support core, with the lifting elements configured and dimensioned to provide certified overhead lifting of the mat for installation and reclamation thereof.

Abstract: A mat having a non-wood core that provides strength and rigidity to the mat, and including a structure of a sheet, elongated members, a frame, compartments, or combinations thereof; and at least one outer layer associated with the core and made of a sheet, elongated members or combinations thereof, and typically wood. The core and outer layer(s) are integral or are joined together, and the structure of the core is made of one or more environmentally resistant materials to provide an extended service life when encountering rain, snow or other weather conditions that would eventually degrade wood. The mat has a load bearing capacity that is able to withstand a load of at least 500 to 800 psi or even 1000 psi without permanently deforming the core. Bumpers are preferably provided upon sides of the mat to protect them from damage due to transport or installation of the mat.

Abstract: An industrial mat that includes a core construction that provides strength and rigidity to the mat, with the core construction including various layers or plies of components at least some of which are typically made of wood or engineered wood; and a durable skin that surrounds and encapsulates at least the wood components of the mat or the entire core construction. The skin has a thickness sufficient to provide environmental resistance to the wood components or to the core construction to which it is applied. The skin also provides abrasion resistance to the boards and mat.

Abstract: A mat having a core that provides strength and rigidity to the mat, and including a structure of a sheet, elongated members, a frame, compartments, or combinations thereof and at least one outer layer associated with the core and made of a sheet, elongated members or combinations thereof. The core and outer layer(s) are integral or are joined together, and the structure of the core is made of one or more environmentally resistant materials to provide an extended service life when encountering rain, snow or other weather conditions that would eventually degrade wood. The mat has a load bearing capacity that is able to withstand a load of at least 500 to 800 psi or even 1000 psi without permanently deforming the core. Bumpers are preferably provided upon sides of the mat to protect them from damage due to transport or installation of the mat.

Abstract: An industrial mat that includes a core construction that provides strength and rigidity to the mat, with the core construction including plural layers or plies of components at least some of which are of wood or engineered wood; and a durable skin that surrounds and encapsulates at least the wood components of the mat or the entire core construction. The skin has a thickness sufficient to provide environmental resistance to the wood components or to the core construction to which it is applied. The skin also provides abrasion resistance to the boards and mat.