There are many mechanical components to choose from for your device or application. If your device requires a spring, consider constant force springs. These are a type of extension spring. They do not obey Hooke’s law, so their force remains constant, even when deflected. Because of their flat force curve, constant force springs are suitable

Since 1850, John Evans’ Sons has manufactured springs for many unique devices and applications. We’ve manufactured suspension components for the Mars Rover Curiosity, counterbalancing mechanisms for M1A1 Abrams Tanks, and more. It’s common for us to manufacture a custom spring assembly for our clients’ proprietary devices, but we also have a selection of stock springs

Buyers and engineers who are familiar with the RFQ process prioritize cost and lead time when selecting a components manufacturer for their medical device project. While these are important considerations, there are other capabilities you should look for in a manufacturer. These considerations can have a direct effect on project cost and timeline. Here are

The medical industry requires products that perform with accuracy and precision. John Evans’ Sons is proud to provide those products to the medical manufacturing community. We’re excited to attend MD&M West, where we will be showcasing constant force springs, spiral torsion springs, and spring reels. Springs are more economical and precise than motors, making them

Lansdale, Pennsylvania March 22, 2016 / John Evans’ Sons (JES), a manufacturer of industrial springs and mechanical assemblies, has been awarded the AS9100C Certification. AS9100C is the widely adopted and standardized quality management system for the aerospace industry and the certification includes the requirements of ISO 9001:2008 plus additional requirements for the aviation, space and