Pneumatic Tire Definition
"Pneumatic" is a Greek term for "spirit". "Pneuma" translates to anything that is filled with air. The majority of tires you utilize or see today are more than likely pneumatic tires. Actually, nearly all private vehicles and modern commercial transportation can not function without pneumatic tires.
Webster's on line dictionary defines pneumatic tires as tires which are made from reinforced rubber and can hold compressed air. Any tire which requires air pressure to hold its form is considered to be a pneumatic tire.
John Boyd Dunlop, the Irish surgeon has been credited to inventing the pneumatic tire. He developed the first practical pneumatic bicycle tire in 1888. In 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the very first to utilize pneumatic tires on a car during a race.
Pneumatic tires are made from numerous bands of plys or corded fabric. Plys are usually coated with rubber that allows them to hold air pressure. Bias ply tires have the plys overlaid at a specific angle to the other layers. Radial tires have all plys laid at 90 degrees to the tire body or casing.
Tube tires are a kind of tire that needs a rubber inner tube to hold the air pressure. Motorcycle tires on spoke rims, bicycle tires and car tires and older bias ply truck utilize inner tubes. Tubeless tires have a stiff bead on the sidewall edges that creates an airtight seal with the wheel. This eliminates the need for an inner tube.
The fact that pneumatic tires could be punctured and lose air pressure makes them unsuitable for particular applications. Tires tires used in construction, tires used by the military, utilized on forklifts are normally constructed with solid rubber or filled with resilient foam.