Patent ID: 11885077
Assignee: COLUMBIA INSURANCE COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E  D | IPC A  E

Claim 17:
18. A playing surface assembly that defines at least a portion of a playing surface, the playing surface assembly comprising:
a backing having a top surface;
a plurality of reinforcement members secured to and extending upwardly from the backing; and
infill material defining a top surface of the playing surface assembly and having a height measured from the top surface of the backing,
wherein each reinforcement member of the plurality of reinforcement members has a top end and a reveal distance corresponding to a vertical spacing between the top surface of the playing surface assembly and the top end of the reinforcement member, wherein the height of the infill material is greater than the reveal distance of each reinforcement member, wherein the plurality of reinforcement members are configured to restrict migration of the infill material, and
wherein the infill material comprises a natural infill material having a sieve size ranging from 10 to 60 mesh.