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
Network traffic demotion
Method and system for parallelizing data copy in a distributed file system
Controller for flexible and extensible flow processing in software-defined networks
Endotracheal tube
Device and method for processing input data of protective relay
Multifunction switch for vehicle having lighting module
Matching engine for comparing data feeds with user profile criteria
  Randomly Featured Patents
Stabilized choline salicylate compounds
Oil nozzle apparatus and method
Magnetic medium stack assembly for a data storage and retrieval system
Remote medical supporting system
Exercise device
Pilot-assisted data transmission in a coherent optical-communication system
Wireless transmission communication system and portable microphone unit
Ladder bracing for gutters
Rebar positioner
Device for supporting an electric motor driving a turbine, notably for heating and/or air conditioning equipment of a motor vehicle