Pneumatic Tire Definition
"Pneumatic" is a Greek word for "spirit". "Pneuma" translates to anything that is filled with air. The majority of tires you see or utilize nowadays are more than likely pneumatic tires. The fact is, most modern commercial transportation and private motor vehicles can not work without using pneumatic tires.
Pneumatic tires as defined by Webster's on line dictionary are described as tires which are made from durable rubber, which hold compressed air. Any tire which requires air pressure to hold its shape is considered to be a pneumatic tire.
The Irish surgeon John Boyd Dunlop has been credited to inventing the pneumatic tire. He developed the very first practical pneumatic bicycle tire in 1888. In the year 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the first ones to use pneumatic tires on a car during a race.
Pneumatic tires are made up of bands of plys or corded fabric. These plys are coated with rubber to be able hold air pressure. Bias ply tires have the plys overlaid at a particular angle to the other layers. Radial tires have all plys laid at 90 degrees to the casing or tire body.
Inside tube tires, there are a kind of rubber inner tube to hold the air pressure. Bicycle tires, motorcycle tires on spoke rims and older bias ply truck and car tires use inner tubes. Tubeless tires have a stiff bead on the edges of the sidewall that forms an airtight seal with the wheel. This type of tire does not need an inner tube.
The fact that pneumatic tires can lose air pressure and be punctured makes them unsuitable for specific applications. Tires tires utilized in construction, tires used by the military, utilized on forklifts are usually constructed with solid rubber or filled with resilient foam.