An armrest assembly includes an armrest base unit. The base unit has a side portion forming a channel member. First and second auxiliary units may be mounted to the base unit. Each auxiliary unit has an attachment member which is received by and mates with the channel member. A slot and bores are formed...http://www.google.ca/patents/US7806470?utm_source=gb-gplus-sharePatent US7806470 - Vehicle command armrest assembly
