THE HINDU SUNDAY MARCH 4TH, 2007- BY V.N.HARINATH HEALTHY OPTION S. Sudarshan, an engineer, demonstrating the `Portable Air Vessel' for four-wheelers in the city on Saturday. -- PHOTO: K. RAMESH BABU HYDERABAD: Inhaling invisible pollutants like nitrogen/sulphur oxides, carbon monoxide can be fatal, warns Siddaiah Sudarshan (57), an engineer and product developer. A Kannadiga who has made Hyderabad his home, he devised a portable air vessel both for two/four wheelers to provide pure air in heavily polluted traffic, as increasingly seen in the State Capital. It consists of a cylinder of compressed air, a mask and several pressure meters. He explains that higher the vehicle density, higher the threat of pollution. "Even CNG and LPG emit invisible pollutants when burnt. In such a scenario the device can keep a person untouched by the hazards of pollution. It is a boon for asthma and bronchital patients, as they can inhale fresh, unpolluted air," he adds. Precaution The death of three persons in Chennai on October 28 last year in a car due to inhalation of carbon monoxide made Mr. Sudarshan rack his brain for a solution. Out emerged the device that can supply air for four hours for four persons. A traffic policeman can use it replacing the metal cylinder with one made of fibreglass. The air to be used can be filled at any filling station. The only precaution one should take - not to exchange the mask to avoid contamination. Mr. Sudarshan, who holds BE and AMIE degrees, has filed for a patent. His accepted patents are `improvements in pedalling system' and `mobile exhaust controlling system'. Recently he had filed for a coffee and tea cigarette that totally avoids hazards of tobacco. His virtual office is www.prime-project-ideas.com. (Tel. 0-934 89 89 89 0).    ABSTRACT PORTABLE AIR VESSEL (PAV) patent pending  PORTABLE AIR VESSEL (PAV) is a Fresh Air Breathing System which can be used in polluted atmosphere caused by the vehicular traffic on roads. PAV is a cylindrically shaped pressure vessel which is made up of either Mild Steel or FRP. Fresh Air can be stored in PAV under compressed state. Unlike the breathing systems used by the under water divers, which has to be resent to the supplier for refilling, this PAV can be refilled at any petrol filling station or any other near place where an Air compressor is available to inflate the vehicle’s tyres. A controlled outlet valve releases the Fresh Air at required comfortable pressure through tube/s which can be directly connected to the Air Conditioner duct for general breathing by the occupants of a four wheeler or individual nose mask/s may be used if required. Two wheeler riders can house the PAV on the carrier and draw the Fresh Air through nose mask/s and tube/s.  SIDDAIAH SUDARSHAN                                                                                                                                                        INVENTOR