 |
|
 |
| |
 Image Number 11 for United States Patent #6533497.
An assembly for forming a trench comprising a frame having two elongated members that define a support surface and at least one opening. The assembly also includes a removable grate that is disposed on the support surface and includes a hook that is disposed proximate the opening defined by the elongated frame members. The assembly also includes a removable pin that is slidably inserted through an opening defined by an elongated member and is mechanically engaged by the hook of the grate to secure the grate to the frame.
|
|
|
 |
|
 |
|
| |
Randomly Featured Patents |
|