Patent ID: 6305636
Filing Date: 2001-10-23
Classification: B65H,G03D

Abstract:
A web driving device comprising:a web configured to scrub an object;a winding axis connected to a first end of the web, and configured to rotate and wind the web in a winding direction;a supplying axis connected to a second end of the web, and configured to supply a new part of the web and rotate in a supplying direction;a driving device configured to drive the winding axis in the winding direction;lock means for preventing the winding axis from rotating in a direction opposite to the winding direction; andrestricting means for restricting rotation of the supplying axis when the winding axis stops rotating, wherein the restricting means is driven by the driving device when the driving device is active, the restricting means is stopped when the driving device is inactive, and the restricting means allows relative rotation between the supplying axis and the winding axis in a first direction and prevents relative rotation between the supplying axis and the winding axis in a second direction opposite the first direction.