Patent ID: 8443852

Claim:
A device ( 1 ) for effecting automatic nitrogen filling from a nitrogen source, or nitrogen-for-air substitution, for the simultaneous inflation/deflation of a plurality of vehicle tyres, comprising: multiple controllers ( 17 ), each of said controllers adapted to deliver nitrogen to at least one of the tyres based at least partially on a pressure within that tyre, each controller including a processor located on a PCB and each controller being in communication with each of the following: an individual display ( 8 ) for displaying the pressure in the tyre; a pressure sensor ( 9 ) for sensing the pressure in the tyre; an inflation valve ( 4 ) for receiving nitrogen from the nitrogen source and delivering the nitrogen to the tyre; a deflation valve ( 11 ) for releasing pressure from the tyre; and means for enabling simultaneous setting of a target pressure by linking two of the multiple controllers via an interface link between the processors; whereby the plurality of vehicle tyres may be inflated/deflated simultaneously, with user input interfaces ( 10 ) for pressure setting adjustments.