US Patent 7449433 Rigid structure lubricant

A rigid structure comprising a lubricant, an absorbent material, and a reinforcing material. The reinforcing material may be comprised of a fibrous and/or a plastic material. The absorbent material is comprised of a fibrous material. The lubricity and wear rate of the rigid structure can be controlled by changing the amount of lubricant contained in the rigid structure in relation to the amount of reinforcing and/or absorbent material contained in the rigid structure. In some embodiments, the lubricity and wear rate of the rigid structure can also be controlled by changing the amount of reinforcing material in relation to the amount of absorbent material.