Retaining wall block

  • US 7,871,223 B2
  • Filed: 12/23/2009
  • Issued: 01/18/2011
  • Est. Priority Date: 10/13/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A wall block system for constructing a wall comprising:

  • a plurality of wall blocks, each wall block having parallel top and bottom faces, a front face, a rear face, and first and second side wall faces;

    a pin hole defining a first opening in the top face, the first opening having a first area;

    a pin receiving cavity defining a second opening in the bottom face, the second opening having a second area, the second area being greater than the first area; and

    a plurality of pins, each pin having an upper section and a lower section, the upper section having a cross sectional dimension, the lower section having a cross sectional dimension, the cross sectional dimension of the upper section being greater than the cross sectional dimension of the lower section, the plurality of pins being sized such that the lower section is sized to be received in a pin hole in the top face of a wall block, the upper section is sized to be received in a pin receiving cavity in the bottom face of a wall block, the upper section further being sized to prevent the upper section from being received in a pin hole in the top face of a wall block.

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