There is a patent I filed last year, It implements solar sails. To ensure that we keep close to the sun and get most of its radiation pressure, we will use what I call a solar propeller but the name solar mill makes more sense.So lets call it a solar mill. This is a solar sail that instead of being pushed away by the sun's radiation pressure it actually keeps spinning about its axis. We all agree that we cannot keep on increasing the spin indefinitely because the solar sails will break apart at a certain centrifugal force. To prevent damage to our payload we shall keep it stationary using a gyroscope at the center of the system. A magnetic bearing can be used to reduce friction between the spinning ends and non spinning center. After reaching the desired linear velocity, the mass attachments at the arms will then be ejected periodically in a specified direction to slowly build velocity of the payload. To slow down at the destination the remaining attachments are ejected in the opposite direction. Suppose you have a solar sail of a circumference of 10km and a mass of one tonne. Lets assume its material can hold centripetal force at 100rev per second. We shall be having a linear velocity of 1000kms-1. This velocity by such a mass can never be attained using conventional rocket propulsion but thanks to the Sun its no problem. It will take about 3 months to attain this linear velocity if placed at the orbit of mercury. Is my patent valuable?