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US 2007/0181369 A1Published application
Foldable stepladder with step lock
AssigneeCosco Management, Inc.
InventorsWilliam Gibson, Paul Meeker
Life of this patent
Estimating the term…
Abstract
A stepladder includes a longer inclined frame provided with steps coupled to a shorter stabilizer frame provided with rungs for movement relative to the longer inclined frame between an expanded use position and a collapsed storage position. The stepladder also includes a top-step lock to lock the top step in a fixed position relative to the two frames.
Claims20
A stepladder comprising
- a frame including an inclined frame member having a left leg, a right leg, a utility platform arranged to extend between the left and right legs, and a top step arranged to extend between the left and right legs below the utility platform,
- an actuator positioned to lie below the top step, and
- means for coupling the actuator to the top step so that, when the actuator is moved to a first position, the top step is locked in an expanded use position blocking pivotable movement relative to the frame, and so that, when the actuator is moved to a second position, the top step is unlocked to allow pivotable of the top step relative to the frame.
A stepladder comprising
- a frame including an inclined frame member having a left leg, a right leg, a utility platform arranged to extend between the left and right legs, and a top step arranged to extend between the left and right legs below the utility platform, and a stabilizer frame member coupled to the inclined frame member for pivotable movement about a frame pivot axis, the stabilizer frame member having first and second vertical members and a horizontal anchor rung arranged to extend between the first and second vertical members,
- an actuator positioned to lie below the top step, and
- an extension rod arranged to extend upwardly along the stabilizer frame member, the extension rod is coupled on one end to the top step and is coupled on an opposite end to the actuator.
A stepladder comprising
- an inclined frame including a left leg, a right leg, a utility platform extending between the left and right legs, and a top step extending between the left and right legs below the utility platform,
- a stabilizer frame including first and second vertical members coupled to the inclined frame for pivotable movement about a frame pivot axis, and
- a top-step lock including an extension rod extending upwardly along the stabilizer frame to the top step, a rod locker configured to lock the extension rod to the stabilizer frame to lock the top step in a fixed position relative to the inclined frame and the stabilizer frame, and a horizontal anchor rung extending between the first and second vertical members.
Dependencies are inferred from the claim text.