Pneumatic Tire Definition
The word "pneumatic" comes from the Greek word for "spirit" that is "pneuma" and translates to anything that is filled with air. The majority of tires you utilize or see these days are more than likely pneumatic tires. The truth is, the majority of private transportation and modern commercial transportation can not function without utilizing pneumatic tires.
Pneumatic tires as defined by Webster's on line dictionary are described as tires which are made from durable rubber, holding compressed air. Any tire that requires air pressure to hold its form is considered to be a pneumatic tire.
The invention of the pneumatic tire has been credited to Irish surgeon John Boyd Dunlop, who during 1888 developed the very first practical pneumatic bicycle tire. In the year 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the first to utilize pneumatic tires on a car during a race.
Pneumatic tires are made from numerous bands of plys or corded fabric. Plys are normally coated with rubber that allows them 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 casing or tire body.
Tube tires are a type of tire which needs a rubber inner tube to hold the air pressure. Motorcycle tires on spoke rims, bicycle tires and car tires and older bias ply truck use inner tubes. Tubeless tires have a stiff bead on the edges of the sidewall which creates an airtight seal with the wheel. This type of tire does not require an inner tube.
The fact that pneumatic tires can lose air pressure and be punctured makes them unsuitable for certain applications. Tires used on forklifts, tires utilized in construction, tires used by the military are often filled with resilient foam or constructed with solid rubber.