Appeal No. 1999-2132 Page 2 Application No. 08/672,856 series of drive elements rotate in opposite directions. 8. The system of claim 1, wherein the upper and lower series of drive elements compress the pad.Page: Previous 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 NextLast modified: November 3, 2007