Prototypes

The next step in proving a thought is to not let anyone tell you "it cant be done or it won't work because that just isn't the way it has been done in the past". I for one hate that mentality.

Try the suite:

- computer prototyping with different soft packages as SW Inventor aso

- for small parts use the fast prototyping technology

-build a prototype ONLY when it works already on the screen if not it will cost you much more than needed

Prototypes,

With the advent of modern computer softwares (2D &3D),it has become more convenient to try out our Prototype on screen first and build the model as we wish. The CAD softwares are intelligent enough to give a valuable feed back on the satisfactory working of the proposed design. what else the design can also be checked for its inti gritty under various loading and dynamic conditions using FEA analysis. In fact we can build different variants of same design and and give it desired external and internal looks.

An experienced engineer mostly ends up with 90-95-99% of the final model even before its prototype is built,thus saving the cost of prototype making .In many Project type works ( one off kind )we cant afford a prototype and good CAD work is the answer. The word Prototype is fast merging with the first deliverable model to customer.subsequent improvements are always required / necessary.These CAD softwares were available earlier too , but the cost was prohibitive for low cost products but now the low end Softwares like SW and Inventor etc are well within the reach of small and medium organizations.

If you want to become or already are a full-time inventor, read this study:

http://www.uiausa.org/Articles/Articles/CynthiaWeickPhD.pdf

I subscribe to the previous comments on using 3D CAD and other software for design and simulation. Building an eye-catching prototype and spending too much on NRE (non-recurring engineering) is counter-productive. In fact, it all depends on what are your intentions and what is the nature of your invention.

My way is this:

#1- the new concept idea usually coming from identifying a stringent need;

#2- patent and market searching - to be almost sure that is not already done;

#3- build a proof-of-concept model, as cheap as possible (acceptable improvisation);

#4- write a provisional patent application, as complete as possible (3D drawings, etc.) and keep it ready to be filed;

#5- prepare ppt presentations (one not including any disclosure and one including some) and start looking for clients and even send the first ppt;prepare a NDA (Non-Disclosure-Agreement);

#6- If an appointment with the first potential client was set, first file the provisional patent application (through a patent attorney who adds the claims), then meet him asking first to sign the NDA, then display the second ppt and eventually the proof-of-concept model. Avoid to leave any printed or electronic copy. Take someone you trust with you at the meeting to observe the client's reaction and your possible mistakes.

The provisional patent application is just offering an year delay until you have to file the true patent application and is the cheapest way to get some IP protection before disclosing anything.

Displaying an "unfinished" but working model, even made of very common parts and materials (recycled are the best!) may have a great impact - firstly because is addressing to our direct senses (visual & touching) and secondly because is an indication of the future production price and, why not, of your ingenuity.

Once, I did a big mistake saying during the presentation that a certain part of the model should best be gold-plated. That ruined my offer even if the needed quantity was priced under $3!

CAD programs are a great way to design mistakes out of a prototype before you actually start building. There is not going back to pre CAD days, fore sure. What IS missing however, is the hands-on experience and the thought process involved in designing something. I can write a program on the computer, weed out all possible design errors, and print a workable plan on how to drive a vehicle, BUT until you get behind the wheel, you will not be a driver! Prototypes are an extension of the mechanical /mind thought process. Think!

"UNFORTUNATELY, MANY PEOPLE LOSE THEIR ENTREPRENEURIAL SPIRIT BECAUSE OF THE HOME ENVIRONMENT, THE EDUCATIONAL SYSTEM, OR THEIR SOCIAL CONTEXT. THE REASON IS OBVIOUS: FAMILIES, SCHOOLS, AND SOCIETY ARE ESTABLISHMENTS. THE PRIORITY OF ANY ESTABLISHMENT IS THE ORDERLY CONDUCT OF THE INDIVIDUAL. CONFORMITY." - unknown.

Thanks for this great info...really helps to put the whole process into perspective.