ALEXANDRIA, Va., June 2 -- United States Patent no. 12,643,577, issued on June 2.
"Zipline spring segment" was invented by Michael Troy Richardson (Washington, Utah).
According to the abstract* released by the U.S. Patent & Trademark Office: "For zipline spring segment, the spring segment includes two spring sub-segments, an end cap, and a guide. The two spring sub-segments each include a set of spring coils, each spring coil set including a large diameter end and a small diameter end, wherein each of the spring coils of the spring segment nests completely within a neighboring spring coil and a cable passes through the spring coils. The end cap is disposed on the large diameter end of the spring coils, the end cap including a hole that re...