Patent ID: 6068573
Filing Date: 2000-05-30
Classification: F16H

Abstract:
A speed converter assembly with speed conversion stages, said assembly comprising:(a) a primary stage with a primary rotary input part and a primary rotary output part,said input part having a first device for providing an input speed, said output part having a second and third device cooperating to provide an output speed at said output part, each of said devices being located about a common axis,one of said devices comprising a slotted member with at least one slot extending at least between minimum and maximum displacements, said slot being for receipt of an interacting element,rotation of one of said devices putting said interacting element in motion between said maximum and minimum displacements and another one of said devices being put in rotary motion by said in-motion interacting element,one of said devices comprising a first cam device having at least one cam cycle, and a second of said devices comprising a second cam device and having at least one cycle, said cam devices comprising a conjugate pair of cam devices, andall said devices cooperating together for converting said input speed to said output speed, wherein said output speed is related to said input speed according to the ratio of the number of cycles of said first and said second cam devices,(b) a secondary stage comprising a secondary rotary input part and a secondary rotary output part,said secondary input part having a first device for providing an input speed, said secondary output part having a second and third device cooperating to provide an output speed at said secondary output part, each of said devices being located about said common axis,one of said devices comprising a slotted member with at least one slot extending at least between minimum and maximum displacements, said slot being for receipt of an interacting element,rotation of one of said devices putting said interacting element in motion between said maximum and minimum displacements and another one of said devices being put in rotary motion by said in-motion interacting element,one of said devices comprising a first cam device having at least one cam cycle, and a second of said devices comprising a second cam device and having at least one cycle, said cam devices comprising a conjugate pair of cam devices, andall said devices cooperating together for converting said secondary input speed to said secondary output speed, wherein said secondary output speed is related to said secondary input speed according to the ratio of the number of cycles of said first and said second cam devices of said secondary stage, and(c) wherein said primary stage output is connected to said secondary stage input such that said primary stage output speed is the same as the secondary stage input speed, and(d) all said devices being mounted concentric to said common axis and cooperatively defining a pancake speed converter assembly with an open passage running therethrough along said axis.