# What is universal joint?

• (noun): Coupling that connects two rotating shafts allowing freedom of movement in all directions.
Example: "In motor vehicles a universal joint allows the driveshaft to move up and down as the vehicle passes over bumps"
Synonyms: universal

## Universal Joint

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. It consists of a pair of hinges located close together, oriented at 90° to each other, connected by a cross shaft.

### Some articles on universal joint:

Universal Joint - Thompson Coupling
... A Thompson Coupling is a refined version of the double Cardan joint ... It offers slightly increased efficiency with the penalty of great increase in complexity ...
Windsurfers - History
... to conceive the idea of using a handheld sail and rig mounted on a universal joint so that he could control his small catamaran—the first rudderless sailboard ever built that ... first to conceive, design, and build a sailboard with a universal joint ... Experimenting with a rotational design which became the concept for the universal joint, whereby the angle of attack of the sail to the board could be varied to allow control of both power and craft ...
Equation Of Time - History - Apparent Time Versus mean Time
1635–1703), who mathematically analyzed the universal joint, was the first to note that the geometry and mathematical description of the (non-secular) equation of ...
Coupling - Types - Flexible - Universal Joint
... Universal joints are also known as Cardan joints. ...

### Famous quotes containing the words joint and/or universal:

Your letter of excuses has arrived. I receive the letter but do not admit the excuses except in courtesy, as when a man treads on your toes and begs your pardon—the pardon is granted, but the joint aches, especially if there is a corn upon it.
George Gordon Noel Byron (1788–1824)

I had rather believe all the fables in the Legend, and the Talmud, and the Alcoran, than that this universal frame is without a Mind; and, therefore, God never wrought miracle to convince atheism, because his ordinary works convince it.
Francis Bacon (1561–1626)