Pneumatic Tire Definition
The word "pneumatic" comes from the Greek word for "spirit" that is "pneuma" and means something that is filled with air. Nearly all tires you use or see these days are more than likely pneumatic tires. Actually, most modern commercial transportation and private transportation could not function without using pneumatic tires.
Definition
Pneumatic tires as defined by Webster's on line dictionary are described as tires which are constructed from durable rubber, that hold compressed air. Any kind of tire that needs air pressure to hold its shape is considered to be a pneumatic tire.
History
The Irish surgeon John Boyd Dunlop has been credited to inventing the pneumatic tire. He developed the first practical pneumatic bicycle tire in 1888. In 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the first ones to utilize pneumatic tires on a car during a race.
Identification
Pneumatic tires are made up of bands of corded or plys fabric. These plys are coated with rubber in order to 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 tire body or casing.
KInds
Tube tires are a kind of tire which needs 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 sidewall edges which forms an airtight seal with the wheel. This eliminates the need for an inner tube.
Exceptions
Pneumatic tires could lose air pressure when punctured which makes them unsuitable for particular applications. Tires tires used by the military, used on forklifts, tires used in construction are often filled with resilient foam or made with solid rubber.
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