Pneumatic Tire Definition
"Pneumatic" is a Greek word for "spirit". "Pneuma" means something which is filled with air. The majority of tires you see or utilize nowadays are more than likely pneumatic tires. Actually, most private motor vehicles and modern commercial transportation can not work without pneumatic tires.
Webster's online dictionary defines pneumatic tires as tires which are manufactured from reinforced rubber and could hold compressed air. Any type of tire which requires air pressure to hold its form 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 the year 1888 developed the first practical pneumatic bicycle tire. In 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the first to use pneumatic tires on a car during a race.
Pneumatic tires are constructed of bands of plys or corded fabric. These plys are coated with rubber to be able 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.
Tube tires are a type of tire which requires a rubber inner tube in order to hold the air pressure. Motorcycle tires on spoke rims, bicycle tires and car tires and older bias ply truck utilize inner tubes. Tubeless tires have a stiff bead on the edges of the sidewall that creates an airtight seal with the wheel. This eliminates the need for an inner tube.
The fact that pneumatic tires are able to lose air pressure and be punctured makes them unsuitable for certain applications. Tires utilized on forklifts, tires used in construction, tires utilized by the military are often made with solid rubber or filled with resilient foam.