Access mat

Abstract

An access mat is described having a rectangular body with a length dimension and a width dimension. The body includes three laminated layers of lumber, with each of the lumber having a longitudinal axis. A first layer of the three layers has a plurality of lumber, with the longitudinal axis of each lumber in a parallel orientation extending across the length dimension. A second layer of the three layers has a plurality of lumber with the longitudinal axis of each lumber in a parallel orientation extending across the width dimension. A third layer of the three layers has a plurality of lumber with the longitudinal axis of each lumber in an angular orientation relative to the longitudinal axis of the plurality of lumber of the second layer. Correctors are provided for connecting the body with other like bodies.

1 . An access mat, comprising:
 a rectangular body having a length dimension and a width dimension, the body having at least three cross-laminated layers of lumber laminated together by an adhesive and pressure, and each of the lumber having a longitudinal axis,   a first layer of the three cross-laminated layers having a plurality of lumber with the longitudinal axis of each lumber in a parallel orientation extending across the length dimension,   a second layer of the three cross-laminated layers having a plurality of lumber with the longitudinal axis of each lumber in a parallel orientation extending across the width dimension, and   a third layer of the three cross-laminated layers having a plurality of lumber with the longitudinal axis of each lumber in an angular orientation relative to the longitudinal axis of the plurality of lumber of the second layer.   
     
     
         2 . The access mat of  claim 1 , wherein the longitudinal axis of each lumber of the plurality of lumber of the second layer is in an orientation that is perpendicular to the orientation of the lumber of the first layer. 
     
     
         3 . The access mat of  claim 1 , wherein the longitudinal axis of each lumber of the plurality of lumber of the third layer is in an orientation that is perpendicular to the orientation of the lumber of the second layer. 
     
     
         4 . The access mat of  claim 1 , wherein the plurality of lumber of the first layer, the plurality of lumber of the second layer are closely spaced, and the plurality of lumber of the third layer are spaced farther apart than the plurality of lumber of the first layer and the plurality of lumber of the second layer. 
     
     
         5 . The access mat of  claim 1 , wherein the access mat has connectors for connecting the body with other like bodies, the body has a first end and a second end, with one of the connectors being projecting tongues at one of the first end or the second end and another of the connectors being recessed tongue receivers at another of the first end or the second end, each of the tongues engaging one of the tongue receivers to connect the body with other like bodies. 
     
     
         6 . The access mat of  claim 5 , wherein each of the projecting tongues is secured to the body by removable fasteners, such that the projecting tongues are removable to facilitate replacement of damaged tongues. 
     
     
         7 . The access mat of  claim 5 , wherein each of the projecting tongues and tongue receivers are positioned in the third layer. 
     
     
         8 . The access mat of  claim 6 , wherein, upon removal of the fasteners securing the projecting tongues, the body has no metal components, thereby facilitating on site environmental disposal through chipping. 
     
     
         9 . The access mat of  claim 1 , wherein each layer has a peripheral edge, the peripheral edge of the second layer extending outwardly past the peripheral edge of the first layer and the third layer, thereby protecting the first layer and the third layer from damages to the peripheral edge. 
     
     
         10 . The access mat of  claim 1 , wherein metal elements are positioned at each corner of the body to protect the body from corner damage. 
     
     
         11 . The access mat of  claim 10 , wherein, upon removal of the metal elements from each corner of the body, the body has no metal components, thereby facilitating on site environmental disposal through chipping. 
     
     
         12 . An access mat, comprising:
 a rectangular body having a length dimension and a width dimension, the body having three to nine cross-laminated layers of lumber laminated together by an adhesive and pressure, each of the lumber having a longitudinal axis,   a first layer having a plurality of lumber with the longitudinal axis of each lumber in a parallel orientation extending across the length dimension,   a second layer having a plurality of lumber with the longitudinal axis of each lumber in a parallel orientation extending across the width dimension, and   subsequent layers alternating between the orientation of the first layer and the orientation of the second layer.   
     
     
         13 . The access mat of  claim 1 , wherein at least one additional cross-laminated layer is added to the access mat, and a total number of cross-laminated layers ranges from 4 to 9 layers. 
     
     
         14 . The access mat of  claim 1 , wherein the access mat has connectors for connecting the body with other like bodies. 
     
     
         15 . The access mat of  claim 12  wherein the access mat has connectors for connecting the body with other like bodies. 
     
     
         16 . An access mat comprising:
 a rectangular body having a length dimension and a width dimension, the body having at least three cross-laminated layers of lumber laminated together by an adhesive and pressure, each of the lumber having a longitudinal axis,   a first layer haying a plurality of lumber with the longitudinal axis of each lumber in a parallel orientation extending across the length dimension,   a second layer having a plurality of lumber with the longitudinal axis of each lumber in a parallel orientation extending across the width dimension, and   each subsequent layer alternating between an orientation of the first layer and an orientation of the second layer.