Pneumatic Tire Definition
The word "pneumatic" comes from the Greek word for "spirit" that is "pneuma" and translates to something that is filled with air. Nearly all tires you see or utilize these days are more than likely pneumatic tires. The fact is, the majority of private vehicles and modern commercial transportation can not function without pneumatic tires.
Pneumatic tires as defined by Webster's on-line dictionary are described as tires that are made from reinforced rubber, holding compressed air. Any type of tire which requires air pressure to hold its shape is considered to be a pneumatic tire.
The invention of the pneumatic tire has been credited to John Boyd Dunlop, an Irish surgeon, who in the year 1888 developed the very first practical pneumatic bicycle tire. During 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the first to use pneumatic tires on a car during a race.
Pneumatic tires are made from many bands of corded or plys fabric. Plys are often coated with rubber which enables them to hold air pressure. Bias ply tires have the plys overlaid at a certain angle to the other layers. Radial tires have all plys laid at 90 degrees to the tire body or casing.
Inside tube tires, there are a kind of rubber inner tube to be able to hold the air pressure. Motorcycle tires on spoke rims, bicycle tires 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 eliminates the need for an inner tube.
The fact that pneumatic tires are able to be punctured and lose air pressure makes them unsuitable for certain applications. Tires tires utilized in construction, tires utilized by the military, utilized on forklifts are often constructed with solid rubber or filled with resilient foam.