| http://www.w3.org/ns/prov#value | - Apparatus according to claim 11, including a carrier for said hinge joint, the contact roller having an axis of rotation, the shaft of the contact roller having a surface disposed obliquely relative to the axis of rotation of the contact roller, and said torque imparting means being a compression spring pressed against the surface of the shaft of the contact roller and against said carrier.
|
