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Interlocking valve box and lid

  • US 7,243,810 B2
  • Filed: 11/17/2003
  • Issued: 07/17/2007
  • Est. Priority Date: 11/17/2003
  • Status: Active Grant
First Claim
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1. A housing for installation in the ground comprising:

  • at least one wall forming an interior cavity;

    a first knockout formed in the at least one wall and adapted for removal from the at least one wall thereby forming a first opening into the interior cavity when the first knockout is removed;

    a first wall coupler disposed on the at least one wall; and

    a first knockout coupler disposed on the first knockout and adapted to connect the first knockout to the first wall coupler so that the first knockout at least partially covers the first opening;

    wherein the first wall coupler is comprised of a pair of wall ribs disposed adjacent to the first opening that is formed when the first knockout is removed from the at least one wall and wherein the first knockout coupler is comprised of a knockout rib adapted to mate with the pair of wall ribs.

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