A device for adjusting the position of the seat-back mounted on a travel luggage pack on the back of a motorcycle is disclosed. The device consists of a slide assembly mounted between the motorcycle and the luggage pack. The slide assembly comprises two parallel slide rails movably mounted on fixed lower...http://www.google.sh/patents/US20110139843?utm_source=gb-gplus-sharePatent US20110139843 - Motorcycle seat-back adjustement device and method
