Pneumatic Tire Definition
The word "pneumatic" comes from the Greek word for "spirit" that is "pneuma" and translates to anything which is filled with air. Nearly all tires you see or use nowadays are more than likely pneumatic tires. Actually, the majority of private motor vehicles and modern commercial transportation could not work without pneumatic tires.
Definition
Pneumatic tires as defined by Webster's online dictionary are described as tires which are constructed from durable rubber, which hold compressed air. Any tire which requires air pressure to hold its form is considered to be a pneumatic tire.
History
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 the year 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the first to use pneumatic tires on a car during a race.
Identification
Pneumatic tires are made from many bands of plys or corded fabric. Plys are usually coated with rubber that enables 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.
KInds
Tube tires are a kind of tire which requires a rubber inner tube in order 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 which forms an airtight seal with the wheel. This type of tire does not need an inner tube.
Exceptions
The fact that pneumatic tires could lose air pressure and be punctured makes them unsuitable for certain applications. Tires tires used by the military, utilized on forklifts, tires used in construction are usually constructed with solid rubber or filled with resilient foam.
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