Description  Claims  Drawing  Cited references 

US6681593B1   [0001] 
DE440599   [0010] 
EP1807672A   [0011]  [0014] 
US6681593B   [0012] 
DE2952541A1   [0014] 
DE10114257A1   [0014] 
DE102010006882A1   [0014] 
DE202004006853U1   [0014] 
US6904976B2   [0014] 
WO2009123458A1   [0014]