Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Shock absorbing underlayment for artificial playing surfaces










Image Number 3 for United States Patent #5605721.

The present invention is directed to an underlayment composition for an artificial playing surface comprised of a butadiene rubber, such as polybutadiene or styrene-butadiene that is commercially available as recycled polycord tires that have been granulized. An inorganic-base moisture-retaining agent such as vermiculite or perlite is also included in the composition in addition to a binder comprised of a mixture of isocyanate polyurethane and an inorganic acid. The present invention also provides a method of making the present composition. The method comprises the steps of mixing thoroughly granulized particles of butadiene rubber in a mixing container, mixing an inorganic-based moisture-retaining component with the butadiene rubber, mixing an acid having a pH .ltoreq.3 with the butadiene rubber and the inorganic-based moisture-retaining component, and mixing an isocyanate polyurethane with the butadiene rubber, the inorganic-based moisture-retaining component and the acid. Finally, the present invention also provides a method of using the present composition which comprises the steps of applying the composition over a conventional foundation base and laying an artificial turf over the underlayment composition.








 
 
  Recently Added Patents
System and method for testing an integrated circuit embedded in a system on a chip
Antagonists of the glucagon receptor
Image descriptor quantization
Defect detection system and method
Mobile communication device monitoring systems and methods
Fixing apparatus
Method and system for establishing security connection between switch equipments
  Randomly Featured Patents
Magnetic coupling mechanism for use in an automotive vehicle
Method and system for reporting errors in a geographic database
Sulfonate and carbamate derivatives of 3-aroylbenzo[b]thiophenes
Integrated semiconductor memory and method of operating same
Water purifier
Bidirectional channel skipping tuner drive system with single pole programming switch
Enhanced dot resolution for inkjet printing
Light sign
Wire harness assembly
Orthogonal LMS algorithms for fast line echo canceler training