A massaging chair is capable of assuring comfortable use, both in the sitting and lying positions. The massaging chair comprises a seat, a reclining backrest pivotally connected about a pivot axis to the seat so as to be movable between an upright position and a horizontal position with respect...http://www.google.sh/patents/US5813727?utm_source=gb-gplus-sharePatent US5813727 - Massaging chair
