Patent ID: 7836655

Claim:
A bamboo flooring plank comprising: first, second and third layers of 100% bamboo laminated together, wherein: the first layer having a first plurality of bamboo fibers oriented generally parallel to each other to form a first grain of the layer, the first layer having been preconditioned to a first moisture content upon completion of preconditioning, wherein the moisture content of the first layer is preconditioned by alternately lowering and elevating the moisture content in a first plurality of sequential cycles before the first layer is laminated with the second and third layers; the second layer of having length and a second plurality of bamboo fibers oriented generally parallel to each other to form a second grain of the layer, wherein the second grain is substantially perpendicular to the length, the second layer having been preconditioned to a second moisture content upon completion of preconditioning, wherein the second layer is preconditioned by alternately lowering and elevating in a second plurality of sequential cycles different than the first plurality of sequential cycles before the second layer is laminated with the first and third layers, the second layer having a first edge portion with a first locking joinery portion, and having a second edge portion, a second locking joinery portion shaped and sized to lockably interconnect with a first joinery portion of another bamboo plank; and the third layer having a third plurality of bamboo fibers oriented generally parallel to each other to form a third grain of the layer, the third layer having been preconditioned to a third moisture content of the third layer upon completion of preconditioning, wherein the third layer is preconditioned by alternately lowering and elevating the moisture content in a third plurality of sequential cycles before the third layer is laminated with the first and second layers, wherein the first and second moisture contents are different upon completion of the first and second layers being preconditioned and before the first, second and third layers are laminated together.