Patent ID: 9068434
Filing Date: 2015-06-30
Classification: E01C,E21B

Abstract:
1. An end cap assembly for interlocking with an oil field mat, comprising (a) an elongated base layer with a top side and a bottom side, and a base layer coupler fastened to the top side on an end, the elongated base layer comprising a plurality of base layer boards, the plurality of base layer boards having a longitudinal axis in a first direction, wherein the based layer coupler comprises: (b) a top layer comprising a plurality of top layer boards, each top layer board having a longitudinal axis in the first direction; and (c) a middle layer comprising a plurality of middle boards, each middle board having a longitudinal axis in a second direction that is 90 degrees from the first direction, with the middle layer disposed between the elongated base layer and the top layer; (d) a plurality of holes formed through each board of each layer, wherein the top layer holes align with the middle layer holes and with the base layer holes; (e) a plurality of multilayer fasteners, each multilayer fastener disposed in aligned holes of the top, middle and base layers; and (f) a plurality of coupler fasteners, each coupler fastener disposed through holes in boards used to form the base layer coupler.