Built-in coil springs nested inside the trailer ramp hinge and bumper protect pivot parts from damage while keeping ramp movement smooth.
Aligned active and non-active turns improve wave spring load distribution while reducing torsional loads and friction during component preloading.
Rollers and pin-guided coupling keep twin springs aligned while cutting sliding friction and avoiding guide locking.
Bent end-coil regions keep the active coil count stable during compression, cutting lateral force, friction, and wear.
Oil is routed through shaft passages and regulating bolts to prevent heat buildup in the damping chamber and keep shock absorption stable.
An integral spring-support ring with rib-and-groove elastic fitting stops ring twisting and keeps the strut retained after spring breakage.
A conformal spring inner end tightens onto a noncircular shaft to expand rotation, strengthen coupling, and free hollow-shaft space.
Aligned active and non-active wave spring turns stabilize preload, reduce torsional vibration, and improve load distribution in components.
A lug-mounted shim on an edge-wound wave spring enables precise preload setting by rotation, avoiding iterative disassembly and shim rework.
A variable-pitch helical space keeps coils from closing at critical regions, suppressing lateral force, friction, and wear during compression.
Three nested tension springs use spread and constricted end coils with external locking elements to raise tensile force in limited space.
Non-uniform coil spacing with transitional regions keeps active turns constant during compression, reducing lateral force, friction, and wear.
A melt-away eutectic sheath shapes fiber-resin wire into helical springs, cutting mold complexity and production cost.
Varying coil spacing and transitional pitch regions keeps coils from closing fully during compression, reducing lateral force, friction, and wear.
Helical spring with hollow core absorbs operational vibrations via internal polymer damping member.
A triboelectric energy harvesting spring converts mechanical deformation into electrical charge using contact-separation cycles between carbon composite layers.
A spring assembly uses a common retaining element to connect multiple tension springs via positive and force-fit locking.