Pneumatic Tire Definition
"Pneumatic" is a Greek word for "spirit". "Pneuma" means anything which is filled with air. The majority of tires you see or utilize these days are more than likely pneumatic tires. In fact, the majority of modern commercial transportation and private vehicles could not function without pneumatic tires.
Webster's online dictionary defines pneumatic tires as tires that are manufactured from reinforced rubber and could hold compressed air. Any tire that needs 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 during 1888 developed the very first practical pneumatic bicycle tire. In 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the very first to use pneumatic tires on a car during a race.
Pneumatic tires are made from numerous bands of plys or corded fabric. Plys are often coated with rubber that allows 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.
Tube tires are a kind of tire which needs 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 edges of the sidewall that 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 particular applications. Tires tires used in construction, tires utilized by the military, utilized on forklifts are often constructed with solid rubber or filled with resilient foam.