Puncture-proof tires, either solid or foam-filled, are popular items on rental machines and machines used in hostile environments, such as demolition, landfills, and quarries. Solid tires sometimes ...

Foam-filled tires are made of regular rubber but replace the air inside with hardened liquid urethane. While they come with benefits like being impervious to flats, they can only be used on ...

Urethane International L.L.C. has launched a program to create a nationwide network of about 500 dealers to handle its recently patented polyurethane foam flatproof material and machines. The company ...

The machine allows dealers to recycle used tire-fill foam by mixing it with about 50-percent virgin material for reuse in a tire. “It's a tremendous cost savings to the dealer,” Mr. Danules said. “We ...

Tires filled with pressurized inner tubes have helped to propel all kinds of bicycles for the past 100 years, but these tires are vulnerable to puncturing and require regular inflation. Airless bike ...