Rockin’ Patent – “Insert For Cajon Drum”
Rockin’ Patent: US Patent No. 7,928,303 Filed: 28 February 2008 In the name of: Riley Investments LLC Title: Insert For Cajon Drum What’s claimed: “Apparatus for lowering the fundamental frequency of a cajon drum, wherein said drum comprises four wooden side walls and a wooden top, wherein a first wooded side wall is the drumhead, wherein an opening is formed in a second side wall of said drum, comprising: a cylindrical insert, said cylindrical insert having a cylindrical body, said body being adapted to be slid into said opening, said insert having a flared flange at the outer end of said body and mounting means […]
