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Last edited 22 Aug 2018
The Properties of Compression Springs
Compression springs are the most commonly-used type of spring as well as the most economical, making it an important spring within the manufacturing industry. Aside from manufacturing, they are also used in a range of other industries including:
 What Is a compression spring?
Compression springs are open-coiled springs wound into a helical shape. They are designed to offer resistance to a compressive force applied axially, meaning that they push back when force is applied to them. Helically-wound compression springs are the most common configuration and have an extensive range of uses.
Compression springs can be formed in many different types such as:
They are typically positioned over a rod or fitted into a hole. When subject to pressure by weight on their axis, the spring compresses. As it does this, it gains the potential to push back to its original position.
 History of use
Some form of spring technology has existed for thousands of years. The earliest known application of spring technology is the bow and arrow. Coiled springs, however, did not appear until early in the 15th century.
These first compression springs were used in door locks in the 18th century to ensure that only one specific type of key could be used to unlock a door. They were later used in the first spring-powered clock that evolved into the first watches of the 16th century.
In 1676, British physicist Robert Hooke postulated Hooke’s law, which states that the exertion of a spring is proportional to the load applied to it, so long as this load does not exceed the material’s elastic limit.
A feature that can set compression springs apart from other types of spring is the tightness of their coils. Compression springs are less tightly coiled than torsion springs and work in the opposite way to other springs – whereas some springs hold things together, compression springs keep things apart.
Compression springs are typically made from metal due to the stiffness of the material, particularly high strength alloys. A compression spring is fully extended when at rest. However, upon compression, the spring will express stored torsional energy in a pushing force. The shape-restoring force is proportional to the deflected distance of the spring.
 Common uses of compression springs
Compression springs have many different purposes and functions. Probably the most famous use of a compression spring is the pogo stick. Thought to be originally patented in 1891, it rose to popularity in the 1970s, loved by children around the world.
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