Gilmer belt is a trade name for a belt used for transferring power between axles in a machine. The Gilmer belt was originally sold by the L. H. Gilmer company in 1949, and represents one of the earliest toothed belt designs. The belt uses trapezoidal teeth to engage matching grooves on toothed pulleys in order to maintain synchronicity between moving parts.
The Gilmer name is still used by enthusiast circles, including automotive and RC hobbyists. However, the L. H. Gilmer Company became a wholly owned subsidiary of Uniroyal in 1940 and Uniroyal Power Transmission was purchased and absorbed by Gates Rubber Company in 1986. Gates no longer sells belts under the Gilmer name.