Pneumatic Tire Definition
"Pneumatic" is a Greek word for "spirit". "Pneuma" translates to anything that is filled with air. Most tires you use or see these days are more than likely pneumatic tires. In fact, most modern commercial transportation and private transportation could not work without pneumatic tires.
Definition
Pneumatic tires as defined by Webster's on line dictionary are described as tires that are made from durable rubber, that hold compressed air. Any tire which needs air pressure to hold its form is considered to be a pneumatic tire.
History
The invention of the pneumatic tire has been credited to Irish surgeon John Boyd Dunlop, 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 very 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 often 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 casing or tire body.
KInds
Tube tires are a type of tire that requires a rubber inner tube 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 sidewall edges which creates an airtight seal with the wheel. This kind of tire does not need an inner tube.
Exceptions
Pneumatic tires can lose air pressure when punctured which makes them unsuitable for certain applications. Tires tires utilized in construction, tires used by the military, utilized on forklifts are normally filled with resilient foam or constructed with solid rubber.
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