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US 12,467,315 B2Granted
Smart ladder
AssigneeUSS Veteran Services Company LLC
InventorsClifford L Johns, Steven W Brewer, David Dingman
Life of this patent
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Abstract
A ladder including sensors, a controller, and output signals to alert the user to operating conditions and to aid the user in the safe operation of the ladder.
Claims20
A ladder, comprising:
- left and right uprights interconnected by a plurality of rungs, including a bottommost rung,
- a bottom rung sensor which senses when a user is standing on the bottommost rung of the ladder;
- a plurality of contact sensors on said plurality of rungs;
- a controller, mounted on said ladder, which is in communication with said bottom rung sensor and said plurality of contact sensors;
- wherein the controller activates an output signal mounted on the ladder to indicate whether a user is on the bottommost rung;
- and
- wherein the controller determines, based on inputs received from the plurality of sensors, if the user has three points of contact with said plurality of contact sensors.
4 more elements
A ladder, comprising:
- left and right uprights interconnected by a plurality of rungs, wherein said left and right uprights are canted so they diverge from each other on a front side and converge toward each other on a rear side, wherein said rungs are offset toward said rear side of said left and right uprights.
Dependencies are inferred from the claim text.