A torsion mechanism, often sold as a set with related hardware, assists in the lifting and lowering of heavy trailer ramps. This system utilizes the mechanical energy stored in a tightly wound coil to counterbalance the weight, making ramp operation significantly easier and safer. For example, a user might find a single individual can manage a ramp previously requiring two people to operate.
The inclusion of this assisting device provides numerous advantages, including reduced physical strain on the user, increased efficiency in loading and unloading operations, and a decrease in the risk of injury. Historically, trailer ramps relied solely on manual lifting, which often led to back injuries and other musculoskeletal problems. The advent of torsion-assisted ramps marked a significant improvement in trailer design and usability.