Description  Claims  Drawing  Cited references 

US2014276943A1   [0006] 
WO2011134083A1   [0007] 
US7725162B   [0018]  [0020]  [0037] 
US20140200621   [0020] 
US9119655B   [0023]  [0030] 
US9008757B   [0027]