Pneumatic Tire Definition
The word "pneumatic" comes from the Greek word for "spirit" that is "pneuma" and means anything which is filled with air. Most tires you utilize or see these days are more than likely pneumatic tires. Actually, the majority of private transportation and modern commercial transportation could not function without pneumatic tires.
Webster's online dictionary defines pneumatic tires as tires which are made from durable rubber and can hold compressed air. Any tire that requires air pressure to hold its form is considered to be a pneumatic tire.
John Boyd Dunlop, the Irish surgeon has been credited to inventing the pneumatic tire. He developed the very first practical pneumatic bicycle tire during 1888. In the year 1895, the Michelin brothers Edouard and Andre, the Michelin brothers were the very first to utilize pneumatic tires on a car during a race.
Pneumatic tires are made from many bands of plys or corded fabric. Plys are usually 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 tire body or casing.
In tube tires, there are a kind of rubber inner tube to be able 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 that forms an airtight seal with the wheel. This eliminates the need for an inner tube.
The fact that pneumatic tires are able to be punctured and lose air pressure makes them unsuitable for certain applications. Tires utilized on forklifts, tires used in construction, tires utilized by the military are usually filled with resilient foam or made with solid rubber.