Invented by Sandia engineer Donald F. Wilkes and patented by him on June 24, 1969 these devices use a stressed metal band and counter-rotating rollers within an enclosure to create a linear bearing device that loses very little energy to friction. One source claims it is the only basic mechanical invention of the 20th century. Tests by Sandia indicated that Rolamite mechanisms demonstrated friction coefficients as low as 0.0005, an order of magnitude better than ball bearings at the time.
- Nelson, Robert A. "Rolamite". Rex Research. Retrieved 2007-12-11. External link in
- Bishop,James E., (11/27/1973). "Remember the Rolamite? World's 27th-and Newest-'Elementary Mechanism' Still Works, but It Hasn't Revolutionized Technology" The Wall Street Journal Page 46.
- Brinkman, Erik. "ScrollerWheel Rotary Rolamite". Erik Brinkman. Retrieved 2008-07-12. External link in
- Compilation of Rolamite information and articles Including pictures and applications.
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