Device for deterring unauthorized climbing of permanent ladders
OwnerJohn B. Russoinventor
Life of this patent
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Abstract
A climbing deterrence device is attached to a vertical ladder leading to a water tank or the like. The device is configured to prevent unauthorized people from climbing the ladder and obtaining access to the tank or other structure to which it is attached. The device comprises a cage made of expanded metal and assembled from a plurality pieces that substantially encircle a conventional ladder in such a way that the device cannot be crawled over or through without unlocking a door which normally closes a climbing path through the device.
Claims15
A device to deter climbing of permanent ladders of the type permanently secured to a support structure and having a pair of side rails and a plurality of rungs, comprising
- a front section having a pair of generally coplanar longitudinal edges and a front panel spanning the longitudinal edges and extending out of the plane thereof to define a climbing path for a human between the front panel and the ladder;
- means for securing the front section to the ladder for positioning the longitudinal edges parallel to the ladder side rails and juxtaposed thereto;
- a back section, separable from the front section, having a back panel;
- means for securing the back section to the ladder at the same elevation as the front section and for positioning the back panel away from the ladder rungs;
- means preventing human movement between the back section and the ladder;
- a door and means mounting the door for pivotal movement between a first closed position adjacent the front panel closing the climbing path and a second open position unblocking the climbing path;
- and
- means for locking the door in the first position.
Dependencies are inferred from the claim text.