Cardan joint

Due to the heavy torque required for such equipment, double Cardan joints are primarily used.

The term Cardan joint appears to be a latecomer to the English language.

Universal joints are also known as Cardan joints.

A Thompson Coupling is a refined version of the double Cardan joint.

A configuration known as a double Cardan joint drive shaft partially overcomes the problem of jerky rotation.

In Europe, the device is often called the Cardan joint or Cardan shaft.

Double Cardan joints require a centering element that will maintain equal angles between the driven and driving shafts for true constant velocity rotation.

It has a hollow axle (Hohlachse) on the outside, connected at its centre by a Cardan joint to a fixed driving axle running through it.

A double cardan joint consists of two universal joints mounted back to back with a center yoke; the center yoke replaces the intermediate shaft.

The power transmission to the axle and shaft takes place via a universal joint (also known as a Hooke's joint or Cardan joint) with rubber elements.

There are various types of constant-velocity (CV) couplings: Rzeppa joint, Double cardan joint, and Thompson coupling.

The cause of the fire was not an electrical short as first suspected but rather a mechanical problem with the cardan joint which is located next to the fuel tank in the train.

The Thompson constant velocity joint (TCVJ), also known as a Thompson coupling, assembles two cardan joints within each other to eliminate the intermediate shaft.

While the geometric configuration does not maintain constant velocity for the control yoke that aligns the cardan joints, the control yoke has minimal inertia and generates little vibration.

Reinvented the Cardan joint under the name of "Polhem knot" (Polhemknut) independently of Gerolamo Cardano, the pioneer inventor.

Initially it concentrated with only little success on carburettors, then in 1925 an ambitious new manager, the engineer Fritz Faudi, took over and a new type of cardan joint was developed, which became extremely popular.

The power train from the four-speed gearbox to the two rear wheels was also unusual: fixed to the gearbox output drive was something called a 'Hardy disc', which was a cardan joint made of rubber.

The cardan joints within the Thompson Coupling can use roller bearings for all bearing surfaces; this reduces friction and wear when compared to the sliding joints used in Rzeppa-type CV joints.

The Cardan joint suffers from one major problem: even when the input drive shaft axle rotates at a constant speed, the output drive shaft axle rotates at a variable speed, thus causing vibration and wear.

Double Cardan joints are similar to double Cardan shafts, except that the length of the intermediate shaft is shortened leaving only the yokes; this effectively allows the two Hooke's joints to be mounted back to back.

The axles often caused uneven, jerky running as a result of the resistance forces that arise from this type of Cardan joint, and they were expensive to maintain, something which was not offset by the reduced wear and tear on wheel flanges and rails.

The fact that it failed to maintain constant velocity during rotation was recognized by Robert Hooke in the 17th century, who proposed the first constant velocity joint, consisting of two Cardan joints offset by 90 degrees, so as to cancel out the velocity variations.

The novel feature of the coupling is the method for geometrically constraining the pair of cardan joints within the assembly by using, for example, a spherical four bar scissors linkage (spherical pantograph) and it is the first coupling to have this combination of properties.

The Cardan joint comprises two spherical elements that are interlinked - a solid one on the fixed axle and a hollow one on the outer hollow axle, each oriented at 90 to the other that transfer the driving forces from the rigid axle to the hollow one.

A universal joint, universal coupling, U-joint, Cardan joint, Hardy-Spicer joint, or Hooke's joint is a joint or coupling in a rigid rod that allows the rod to 'bend' in any direction, and is commonly used in shafts that transmit rotary motion.