| Coiled like a snail shell, power springs are made from | | | | the diameter of the arbor. |
| a variety of materials depending on their application. | | | | While power springs are widely used in various |
| They are essential for every type of retract-return | | | | industries, their design and performance is a |
| device, or rotational motive power for toy among | | | | complicated matter, and is completely understood |
| other instruments, appliances, and machines. | | | | only by a few people. As a matter of fact, many find |
| Also known as clock springs, this type of energy | | | | it hard to tell the conventional type of clock spring |
| storage device consists of a strip or spring-tempered | | | | apart from a pre-stressed one. Other than the |
| material wound on an arbor and restrained in a | | | | direction of the winding of the springs, it can be |
| cylindrical case. Rotational torque can be obtained | | | | difficult to determine the spring type, as both can |
| from a center arbor or from the case, wherein the | | | | appear almost the same. |
| torque increases throughout the total winding of the | | | | It would be best to have clock springs customized |
| spring. | | | | for a particular purpose, as opposed to forcing the |
| Available in different sizes, such springs can be made | | | | use of items simply because they are in stock, so |
| out of beryllium copper or other similar alloys for | | | | that the spring device can be easily inserted into the |
| smaller metal coils, while larger mechanisms such as | | | | customer's product. Most power springs are shipped |
| those found in vehicles are made from high-carbon | | | | in customer-designed retainers for immediate use in |
| steel. Their performance is defined by the dimensions | | | | the customer's intended application, or with simple |
| of the spring material - from the thickness, width, | | | | retaining rings to make insertion into the proper |
| length, to the space available such as the housing and | | | | housing on the client's end faster. |