A cast drying system is disclosed for drying a cast. The cast drying system includes a cast drying device including an inflatable bladder made of a flexible material, the bladder having an outer wall and an inner wall jointed together to define an enclosed expansion chamber. The inflatable bladder further...http://www.google.de/patents/US5214860?utm_source=gb-gplus-sharePatent US5214860 - Cast drying device and method of use