I didn't get to see your invention but here's some advice..Step 1. Get a notebook with pages that can't be removed without tearing them out. Record by hand every single step you take and the date you take it. Including who you talk to about it. This will be your record that proves you started it.Step 2.
Make some prototypes to demonstrate your product, you must have done this already judging by the responsesStep 3.
If it's a product that can be made cheaply do not
waste your own
money on a full patent. Everybody tells you to run out and get a patent right away. What they don't tell you is people will still copy you and it's up to you to hire patent attorneys and chase the violators down, can you afford this? Your money will be much better spent in marketing and getting the product out there. Having a good idea doesn't guarantee sales.Step 4.
Find out how much it will cost to make it and how much potential customers are willing to pay for it. What's the market size and potential? Investors will want to know. If you have this figured out It's much easier to get a backer.Step 5.
Get some non-disclosure agreements and go look for investors, preferably someone who knows and is successful in the market you're after. You can have a lawyer draw up non-disclosure agreements for you or you can go to your local Small Business Association (SBA)and get some generic ones. Have potential investors sign a non-disclosure agreement! If you're not a good pitch-man... find one to do it for you.
Don't waste your time going to the bank unless you have a bunch of collateral you're willing to put up, they simply won't risk anything. The good news is, since nobody trusts the stock market and real estate prices have tanked, people with money are actually more likely to invest in something like this!
Does this all sound hard to you? We've all heard the stories of inventors who had one good idea and got rich, but the simple fact is most fail.
It takes belief and persistence to prevail.
P.S. Yes I'm an inventor.. but not a rich one (yet)