John Evans’ Sons is the international leader in design and manufacturing of constant force springs, constant force spring assemblies and pusher springs (variable force). Custom design, in-house tooling and precision manufacturing, combined with a wide & varied stock spring selection allows us to serve a wide variety of applications from military to medical, high-tech & aerospace. We provide impeccable service from start to finish and set the standard for world-class precision spring products. John Evans’ Sons is the international leader in design and manufacturing of constant force springs, constant force spring assemblies and pusher springs (variable force). Custom design, in-house tooling and precision manufacturing, combined with a wide & varied stock spring selection allows us to serve a wide variety of applications from military to medical, high-tech & aerospace. We provide impeccable service from start to finish and set the standard for world-class precision spring products.
JES supplies aviation, space and defense industries with constant force springs, power springs, helical shock and vibration isolators, torsion bar springs, spiral torsion springs...
