A massaging element for delivering a long stroke massage, the massaging element having at least one pair of symmetrical arc-shaped spring elements extending from a central driving component and having replaceable massaging units such as rollers at their free ends. A driving unit delivers reciprocating...http://www.google.sh/patents/US6174298?utm_source=gb-gplus-sharePatent US6174298 - Massaging element and a portable massager using same
