Spiral spring disc torsional coupling

A spring disc resilient coupling adapted for use in a torsional coupling or clutch assembly between driving and driven members, comprising a plurality of spring discs secured together in a stack to operate as a unit, each disc including an outer peripheral ring, an inner peripheral ring and a pair of smooth continuously curved spiral slots extending through said disc between said inner ring and said outer ring to define a pair of curved resilient members joining the inner and outer rings and resisting relative rotation therebetween, said outer ring having a plurality of circumferentially spaced openings therein, said inner ring having a plurality of circumferentially spaced openings therein, securing means through said inner and outer openings, said pair of slots intersecting oppositely disposed balance the forces, said outer rings being secured to one of said driving or driven members and said inner rings being operatively connected to the other of said driving or driven members.

A spring disc resilient coupling adapted for use in a torsional coupling or clutch assembly between driving and driven members, comprising a plurality of spring discs secured together in a stack to operate as a unit, each disc including an outer peripheral ring, an inner peripheral ring and a smooth continuously curved slot extending through said disc between said outer ring and said inner ring to define a curved resilient member joining the inner and outer rings and resisting relative rotation therebetween, the successive discs in the stack being rotated through an arc of rotation divisible into 360.degree. from the previous disc to phase the discs in the assembly and inner and outer openings, and end plates secured to said stack of discs, each end plate having a central opening with a pair of oppositely disposed arcuate peripheral recesses cooperating with a pair of rivets in a pair of oppositely disposed inner openings to limit relative rotation between said inner and outer rings, said outer rings being secured to one of said driving or driven members and said inner rings being operatively connected to the other of said driving or driven members.

A spring disc resilient coupling adapted for use in a torsional coupling or clutch assembly between driving and driven members, comprising a plurality of spring discs secured together in a stack to operate as a unit, each disc including an outer peripheral ring, an inner peripheral ring and at least one smooth continuously curved slot extending through said disc between said outer ring and said inner ring to define a curved resilient member joining the inner and outer rings and resisting relative rotation therebetween, alternate discs in the stack being reversed so that the curved spring members rotate in opposite directions, said outer ring being secured to one of said driving or driven members and said inner rings being operatively connected to the other of said driving or driven members.

A spring disc resilient coupling adapted for use in a torsional coupling or clutch assembly between driving and driven members, comprising a plurality of spring discs secured together in a stack to operate as a unit, each disc including an outer peripheral ring, an inner peripheral ring and at least one smooth continuously curved slot extending through said disc between said outer ring and said inner ring to define a curved resilient member joining the inner and outer rings and resisting relative rotation therebetween, said spring disc stack consisting of at least two types of spring discs arranged to wind up at different time intervals to produce a multi-stage resilient coupling, said outer rings being secured to one of said driving or driven members and said inner rings being operatively connected to the other of said driving or driven members.