Kenner holds the most patents of any African-American woman. She first came up with the idea of the belt in the 1920s, but couldn't afford a patent at the time. The Sonn-Nap-Pack Company looks to market her invention after she patents it in 1957, but when they learn she is Black, they decline to take it on.

Kenner will also patent a tray and carrier to attach to a wheelchair and a mounted back washer and massager, amongst other products used today.