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Ebonite International was a parent company that oversaw the manufacture of bowling balls [1] and bowling equipment. Their headquarters and primary manufacturing facility was located in Hopkinsville, Kentucky before closing on November 15, 2019.
The USBC and World Bowling promulgate bowling ball specifications. USBC specifications include physical requirements for weight (≤16 pounds (7.3 kg)), diameter (8.500 inches (21.59 cm)—8.595 inches (21.83 cm)), surface hardness, surface roughness, hole drilling limitations (example: a single balance hole including the thumb hole for "two-handed" bowlers [3]), balance, plug limitations, and ...
Their most notable brand name is Columbia 300, which has produced some of the most well-known balls in the sport. Beginning in 1960 in Ephrata, Washington (near the Columbia River), Columbia Industries was the first manufacturer to successfully use polyester resin ("plastic") in bowling balls. Prior to this, nearly all bowling balls were made ...
Track was a company involved in the manufacture and sales of bowling balls and ten-pin bowling related accessories. The company was purchased by Columbia Industries and subsequently transferred to Ebonite International of Hopkinsville, Kentucky when the latter acquired the former in February 2007.
Columbia Industries, founded in 1960, was the first manufacturer to successfully use polyester resin ("plastic") in bowling balls. [37] In 1980, urethane-shell bowling balls were introduced by Ebonite. Rules for target bowls evolved separately in each of the other countries that adopted the predominantly British game.
Ebonite applications from the 19th century. Ebonite is a brand name for a material generically known as hard rubber or vulcanite, obtained via vulcanizing natural rubber for prolonged periods. Ebonite may contain from 25% to 80% sulfur and linseed oil. [1] [2] Its name comes from its intended use as an artificial substitute for ebony wood.