Description  Claims  Drawing  Cited references 

US4880102A   [0003] 
US5480021A   [0004] 
US4506779A   [0004] 
US4726876A   [0004] 
US3728191A   [0005] 
US4483351A   [0005] 
US20080264761A   [0007] 
FR2496065A   [0008] 
WO2014087293A   [0009]