The spelling of the phrase "universal coupling" is derived from the Latin word "universus" meaning "whole" or "entire" and the English word "coupling" meaning the joining of two objects. The IPA phonetic transcription for "universus" is /u.ni.ˈwɛr.sus/ and for "coupling" is /ˈkʌp.lɪŋ/. The combination of these two words results in the spelling "universal coupling" (/juː.nɪˈvɜː.səl ˈkʌp.lɪŋ/) which refers to a mechanical device used to connect two shafts at an angle.
A universal coupling, also known as a universal joint or a Cardan joint, is a mechanical device used to connect two shafts that are at an angle to each other. It is designed to transmit torque and rotational motion between the two shafts while allowing them to rotate independently of each other.
The universal coupling consists of two yoke-shaped components that are connected by a cross-shaped bearing. The yokes are mounted on the ends of the shafts, and the cross-shaped bearing sits in the middle. The bearing has four arms, each one attached to a yoke, forming a cross-like shape when viewed from the side.
The universal coupling enables the transmission of rotational force even when there is misalignment between the shafts or when they are at different angles. This flexibility is achieved through the articulated design of the cross-shaped bearing, which allows the shafts to rotate freely in any direction. The bearing transfers torque from one shaft to the other through its arms, ensuring a smooth transfer of power.
Universal couplings are commonly used in various applications, including automotive drive systems, industrial machinery, and power transmission systems. They are particularly useful in situations where there is a need for flexibility and the accommodation of angular displacements. By providing a reliable connection and compensating for misalignment, a universal coupling ensures efficient power transmission and reduces the risk of shaft damage or failure.
The term "universal coupling" originates from the combination of two words: "universal" and "coupling".
The word "universal" comes from the Latin word "universus", meaning "all together" or "whole". "Universus" is derived from the combination of "unus" meaning "one" and "versus" meaning "turned". Hence, universal refers to something that is comprehensive, including or relating to all, or applicable in all cases.
On the other hand, the word "coupling" originates from the Old English word "coplung", which means "a joining or connecting together". The word "coplung" can be traced back to the Proto-Germanic "koplungō", meaning "a bond or link".
Therefore, the etymology of "universal coupling" refers to a device or mechanism that joins or connects things together completely, comprehensively, or without restrictions.