What i am trying to understand is if there are other examples of this type break system how can someone patent it, i have looked at the patent and there it list former examples of the system so again how can someone get a patent on something that has existed prior to the application the smooth stop is a separate issue and i fully understand it as this type of device had not been made prior to the application for patent.
what has BVM patented the O'ring the whole brake system did he get permission to from prior patent hold's of this type device or pay a royalty to them for this purpose.

Dennis