Description  Claims  Drawing  Cited references 

US5140710A   [0003] 
CN202060967U   [0004] 
US5422684A   [0005] 
EP3318214A1   [0006] 
WO2018134172A1   [0007] 
US5740222A   [0008] 
US20150363979A1   [0009]