Whilst i have been waiting for other replies i have been in contact with the person who has one of the Patents i mentioned in my initial thread. He said that although lots of people have told him his idea is a good one (inc manufacturers) no one is willing to take it up because they do not believe there is a market for it. I would like to conduct a poll, on this forum, which will either give him something to take to another manufacturer or make him realise that there is no market for his idea. I will post it as a new thread, please take part.