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US 8,413,764 B1Granted
Ladder safety device, systems and methods of arresting falls from ladders
OwnerDavid A. Cohen, John P. McCarthy, IVinventors
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Abstract
A ladder safety device, systems and methods of arresting falls from ladders are provided. The ladder safety device includes a safety guide that extends along the length of an extension ladder. The length of the guide along the length of the ladder extends and contracts in unison with the extension and retraction of the extension ladder, and a tension is maintained on the guide to maintain a load during use of the ladder for climbing.
Claims18
A ladder safety device, the ladder safety device comprising:
- a spool configured to be disposed at a first end of an extendable ladder, the spool including a guide to which a fall protection harness is securable, the guide having a terminal end configured to be secured to a fixed-point mount at a second end of the extendable ladder;
- and
- a motor connected to the spool, the motor configured to respectively unwind and wind the guide from the spool in relation to the fixed-point mount to maintain tension on the guide as the extendable ladder is extended and retracted.
A ladder system comprising:
- an extendable ladder having a first end and a second end, the second end including a fixed-point mount;
- and
- a ladder safety device associated with the extendable ladder, the ladder safety device comprising:
- a spool configured to be disposed at the first end of the extendable ladder, the spool including a guide to which a fall protection harness is securable, the guide having a terminal end configured to be secured to the fixed-point mount at the second end of the extendable ladder;
- and
- a motor connected to the spool, the motor configured to respectively unwind and wind the guide from the spool in relation to the fixed-point mount to maintain tension on the guide as the extendable ladder is extended and retracted.
3 more elements
Dependencies are inferred from the claim text.