Caster board
two-wheeled, human-powered land vehicle
A caster board, vigorboard or waveboard is a two-wheeled, human-powered land vehicle. Other names are J-board and RipStik (sometimes written ripstick or rip stick), both of which are derived from commercial brands.
A caster board has two narrow platforms known as "decks" that are joined by a torsion bar, which consists of a metal beam, usually coated by rubber, that houses a strong spring. One polyurethane wheel is mounted to each deck with a caster so that each wheel can steer independently, and each caster has a steering axis that is tilted about 30° back from the vertical.
Origins
The original caster board was called an "EssBoard", invented by South Korean Singi Kang, who came up with the redesign of the skateboard as early as 2002. His initial patent application that year ("The skateboard that go forward by swing") was revised and resubmitted ("Skateboard with direction-caster"), with approval following in August 2003. Kang's company Slovie partnered with Decolee to mass-produce boards made of ABS alloy. As of December 2003, according to Joongang Daily, two models were available. "The short board is popular for tricks. The long board is faster.
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This entry incorporates text from “Caster board” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.