I have tried posting this message 3 times. The administrator says he does not know why it will not post. He said to resend it. I am retyping everything to see if I included some unsupported characters...
The "Jake Brake" nomenclature refers to an engine compression brake. It's likely that that Jacobs invented this device and it has become universally accepted much like Kleenex became universally accepted as a tissue brand. The Exhaust Brake is a bit more universal and manufactured by several different companies.