By the mid-1930s, the Inclinator Company had refined its original design significantly. This model represented the second generation of home stairlifts, incorporating lessons learned from a decade of real-world use.

The most notable improvements were in safety and reliability. A mechanical governor limited descent speed, preventing runaway situations. The folding seat was redesigned with a more comfortable contour, and armrests were added for additional security.

This era also saw the introduction of call/send controls — buttons at the top and bottom of the stairs that allowed the empty chair to be summoned, a feature that remains standard on stairlifts today.