Patent ID: 6234661
Filing Date: 2001-05-22
Classification: B29C,B30B,F16H,Y10T

Abstract:
A transmission for a double screw extruder with two tapering screw-threaded shafts; a drive shaft and two transmission shafts driven by said drive shaft; said transmission shafts having parallel axes; two output shafts; rotationally rigid couplings connecting said transmission shafts to said output shafts; said output shafts sloping toward each other and being rotationally rigidly coupled to said tapering screw-threaded shafts; a common housing for said transmission shafts, said output shafts and said couplings; said couplings being gear couplings; each of said gear couplings having two coupling parts each with an outer curved set of teeth and a sleeve with two inner sets of teeth covering said coupling parts, said outer curved set of teeth on said coupling parts meshing with said inner sets of teeth on said sleeve; said coupling parts being secured rotationally rigid to mutually facing ends of said output shafts and said transmission shafts, said couplings compensating against angular displacement of said transmission shafts with respect to said output shafts.