Patent ID: 11879224
Assignee: ROUND SHIELD LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 13:
14. The assembly of claim 13 wherein the base unit wall outer surface at each point along the length of the base unit wall approximately aligns with the first extension unit wall outer surface at a respective corresponding point along the length of the first extension unit wall and with each respective additional extension unit wall outer surface at a corresponding point along the length of the respective additional extension unit so that the base unit wall outer surface at a respective point along the length of the base unit wall and the first extension unit wall at the corresponding point along the first extension unit wall and the respective additional extension unit wall at the respective corresponding point along the respective additional extension unit wall define a line extending substantially continuously along the entire assembly from an uppermost additional extension unit upper edge to the base unit lower edge and substantially parallel to the base unit central axis, the first extension unit central axis, and each respective additional extension unit central axis.