Pneumatic Tire Definition
"Pneumatic" is a Greek term for "spirit". "Pneuma" translates to something that is filled with air. Most tires you see or utilize these days are more than likely pneumatic tires. Actually, most modern commercial transportation and private transportation can not work without pneumatic tires.
Webster's on line dictionary defines pneumatic tires as tires which are manufactured from durable rubber and could hold compressed air. Any type of tire which needs air pressure to hold its form is considered to be a pneumatic tire.
The Irish surgeon John Boyd Dunlop has been credited to inventing the pneumatic tire. He developed the first practical pneumatic bicycle tire in the year 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 many 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 type of tire which requires a rubber inner tube in order to hold the air pressure. Bicycle tires, motorcycle tires on spoke rims and car tires and older bias ply truck use inner tubes. Tubeless tires have a stiff bead on the edges of the sidewall that forms an airtight seal with the wheel. This eliminates the need for an inner tube.
The fact that pneumatic tires can 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.