Patent 7258926 was granted and assigned to Juki on August, 2007 by the United States Patent and Trademark Office.
A suspension having a powder of RBC (rice bran ceramics) suspended in a liquid resin is used as a solid lubricant. The solid lubricant preferably has an RBC proportion of 22 to 74% by weight. The RBC preferably has a mean particle diameter not exceeding 5 μm. An acrylsilicone resin is preferably used as the liquid resin used as the binder. The solid lubricant is applied onto the sliding surface of a sliding member made of a metal, any of various resins, etc. to form a dry film thereon.