JOHN EVANS’ SONS INC.

Constant Force Springs

Constant Force Springs

John Evans’ Sons is an international leader in constant force spring design and manufacturing. This includes spring assemblies, pusher springs (shelf pushers or variable force), constant tension springs, clock springs and various other constant force products.

Custom design, in-house tooling and precision manufacturing as well as a wide and varied stock spring selection, combined with our commitment to quality and on-time delivery, are our strongest selling points.

Consult our experts on constant force springs.

Our constant force springs and assemblies can eliminate costly and complicated motors, decreasing your device size and cost. These types of springs provide:

• Smooth, even, uniform load through entire length or travel (deflection)
• Strong force yield within small spaces
• Extensive linear range
• Small package size
• Ability to easily mount to existing hardware