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US 10,391,815 B2Granted
Multiple layer foam insert for tires
OwnerMark H. Petermaninventor
Life of this patent
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Abstract
A multiple layer foam insert replacement for a pneumatic inner tube for a tire. The multiple layer foam insert emulates the effect of air pressure, across a range of pressures, while still approaching the weight of the air filled tube. Through the use of different density materials and the orientation and thickness of such materials, the desirable characteristics of the pneumatic tube structure and performance can be emulated to a high degree. This multiple layer foam insert can be produced in varying levels of quality and function through the method of extrusion of foam materials in different sizes and layering.
Claims11
A wheel for a vehicle comprising:
- a) a rim having an inner circumference, and an outer circumference and a cavity therebetween;
- b) a tire mounted around the outer circumference of the rim;
- and
- c) an insert inside the tire, comprising:
- (i) a stiff core composed of a first foam material;
- (ii) a resilient outer layer that substantially encircles a peripheral surface of the core and composed of a second foam material different from the first foam material
- (iii) a foam material configured to fill the cavity of the rim.
4 more elements
Dependencies are inferred from the claim text.