Patent 6994473 was granted and assigned to NSK Ltd. on February, 2006 by the United States Patent and Trademark Office.
A grease replenishing device replenishes a grease-lubricated rolling bearing with a grease. The grease replenishing device has a storage chamber portion and a pressing member. The storage chamber portion stores the grease. The pressing member pushes the grease out of the storage chamber into an interior of the rolling bearing.