Patent ID: 11885181
Assignee: WERNER CO.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A ladder comprising:
a first box rail having a first side, a second side extending perpendicularly from the first side, a third side extending perpendicularly from the second side and in parallel and spaced relation with the first side, and a fourth side extending perpendicularly from the third side and in parallel and spaced relation with the second side, the first side having a first hole, the third side having a first hole in alignment with the first hole of the first side;
a plate having a first tube coupled thereto and a peripheral edge with a cut-out, the first tube including a catch that is aligned with the cut-out; the catch being generally rectangular in shape with one corner bent away from the first tube, and three corners of the rectangular shape of the catch attached to the first tube, the first tube disposed in the first box rail in alignment with the first hole of the first side and the first hole of the third side;
a bracket having a first bracket hole in alignment with the first hole of the first side; and
a first fastener extending through the first hole of the third side, the first tube, the first hole of the first side and the first bracket hole which attaches the bracket to the first box rail.