In general, handing over your design/invention to any organisation/company to develop it carries risks. If it promises to make money the temptation will be there for someone to steal your intellectual property (IP). It may help to write a full technical-disclosure document and lodge that in a sealed envelope with a trusted third party (e.g. bank, lawyer) at a verifiable date, so that you have proof of ownership of the IP. Even that won't stop a well-financed dishonest entity from blatantly stealing the IP and challenging you to take them to court (which could be VERY expensive for you).