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A joint for connecting a first drive shaft to a second drive shaft includes a ball and socket arrangement connecting the two shafts and a spring attached at one end to one shaft and at the other end to the other shaft. The spring is made of a polymer matrix containing fibers made from poly(p-phenyle

A joint for connecting a first drive shaft to a second drive shaft includes a ball and socket arrangement connecting the two shafts and a spring attached at one end to one shaft and at the other end to the other shaft. The spring is made of a polymer matrix containing fibers made from poly(p-phenylene terephthalamide) resin. The fibers extend through the polymer matrix along the helical axis of the spring. The spring is disposed about the ball and socket arrangement so that shock loads are absorbed by the spring.

대표청구항 ▼

A joint comprising: a first drive shaft; a second drive shaft; a socket disposed within the first drive shaft; a ball attached to the second drive shaft and disposed within the socket of the first drive shaft; and a spring having two ends, the spring being formed of a polymer matrix, the matrix form

A joint comprising: a first drive shaft; a second drive shaft; a socket disposed within the first drive shaft; a ball attached to the second drive shaft and disposed within the socket of the first drive shaft; and a spring having two ends, the spring being formed of a polymer matrix, the matrix formed to a force sufficiently flexible for permitting non-axial connection of the first and the second drive shafts, sufficiently resilient for absorbing and dampening torsional shock loads in a variable velocity system, sufficiently stiff for transmitting torsional motion from the first drive shaft to the second drive shaft, and sufficiently stiff for transferring rotational forces through the joint, the spring being attached at one end to the first shaft and at the other end to the second shaft and being deposed about the ball and socket.