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US 2018/0363307 A1Published application
Work Scaffold and Method
AssigneeWerner Co.
InventorThomas W. Parker
Life of this patent
Estimating the term…
Abstract
A work scaffold having a platform and leg assemblies rotatably attached to each end of the platform. The platform may have a handle connected to free end that extends out the sides of the platform, which engage with links attached to the leg assemblies and the platform to lock the scaffold in an open or closed position. The platform may have hooks that extend out beyond the ends of the platform from under the platform so a second work scaffold can be situated on the hooks. The platform may be formed of boards with holes that receive cross members. A method for using a work scaffold. A method for forming a work scaffold.
Claims18
A work scaffold comprising:
- a platform;
- a first leg assembly rotatably attached in proximity to a first end of the platform;
- a second leg assembly rotatably attached in proximity to a second end of the platform;
- and
- a latch assembly which locks the first leg assembly in an open position where the first leg assembly forms an angle between 30° and 125° with the platform so a user can be supported on the scaffold when standing on the scaffold, and unlocks the first leg assembly from the locked position so the first leg assembly can rotatably move into a closed position where the first leg assembly is folded up to the platform and is essentially in parallel with the platform, the latch assembly having a latch handle and a first latch bracket attached adjacent a first side of the platform and a second latch bracket attached adjacent a second side of the platform, the latch handle having a generally U shape formed by a center portion and a first arm and a second arm which extend from either side of the center portion, the first arm held to the platform by the first latch bracket and the second arm held to the platform by the second latch bracket, the first arm having a free end which extends through a first platform slot in the first side of the platform, the latch assembly having a first spring which biases the free end towards a top of the first platform slot in the open position, the platform having a first latch bolt extending outwards from the first side, a first link with a link slot, the first link attached to the front leg assembly with a first latch bolt disposed in the first link slot to hold the first link to the first side of the platform, as the first leg assembly moves relative to the platform, the first link slot moves along the first latch bolt until the first latch bolt is disposed at a far end of the first link slot when the scaffold is in the open position, and the first latch bolt is disposed at a rear end of the link slot when the scaffold is in the closed position, the free end of the first arm extends out of the first platform slot and blocks the first link from moving and thus locks the first leg assembly in the open position, when the handle is moved up, the first arm moves down in the first platform slot allowing the first link slot to move along the first latch bolt and thus the first link to move to the folded position, when in the folded position, the first link holds down the free end with the first latch bolt disposed in the rear end of the link slot, which holds the handle up towards the platform so the handle will not catch on an object when the scaffold is being moved.
2 more elements
A method for using a work scaffold comprising the steps of:
- lifting a handle disposed under the platform of the scaffold which moves a free end disposed in a platform slot to a bottom of the platform slot which allows a first link attached to a first leg assembly and to the platform to move, the free end connected to a first arm held to the platform with a latch bracket attached to the platform, the first arm connected to a center portion of the handle;
- and
- folding the first leg assembly up to the platform so the first link moves past the free end and holds the free end at the bottom of the platform slot so the handle stays close to an underside of the platform so the handle does not accidentally catch on an object while the scaffold is being transported.
A work scaffold comprising:
- a platform;
- a first leg assembly rotatably attached in proximity to a first end of the platform;
- a second leg assembly rotatably attached in proximity to a second end of the platform;
- a first hook assembly comprising:
- a first hook bracket fixedly attached to an inside of a first side of the platform, the first hook bracket having a first hook slot;
- a first hook disposed in the first hook slot, the first hook having a first hook end and a second hook end, the first hook end extending out beyond a first end of the platform when the first hook is in an extended position;
- a hook stop disposed adjacent a second hook end of the first hook and extending out from the first hook which prevents the second end of the first hook from moving past the first hook slot and separating from the first hook bracket;
- a hook spring attached to the first side of the platform, the first hook having a notch that receives the hook spring which automatically moves into the notch under a bias force of the hook spring when the first hook moves into the extended position, when the first hook is in the retracted position, the hook spring presses against the first hook, holding the hook in the retracted position;
- and
- a second hook having a first end extending out beyond the first end of the platform when the second hook is in an extended position, the first hook and the second hook adapted to receive a platform of a second scaffold when in the extended position.
7 more elements
A method for using a work scaffold comprising the steps of:
- moving a first leg assembly and a second leg assembly into an open position with respect to a platform to which they are rotatably attached;
- extending a first hook outwards from under the platform, the first hook held to the platform by a hook bracket attached to a first side of the platform having a first slot that the first hook is slidably disposed;
- a first hook disposed in the first slot, the first hook having a first end and a second hook end, the first end extending out beyond a first end of the platform when the first hook is in an extended position;
- a hook stop disposed adjacent a second end of the first hook and extending out from the first hook which prevents the second end of the first hook from moving past first slot and separating from the first hook bracket;
- and a hook spring attached to the first side of the platform, the first hook having a notch that receives the hook spring which automatically moves into the notch under a bias force of the hook spring when the first hook moves into the extended position, when the first hook is in the retracted position, the hook spring presses against the first hook, holding the hook in the retracted position;
- and
- placing a platform of a second scaffold on the first hook and a second hook which extends from the first scaffold.
4 more elements
A work scaffold comprising:
- a platform comprising:
- a first inner board having a first face and a second face in parallel and in spaced relation with the first face and a first hole and a second hole extending through the first and second faces of the first inner board;
- a second inner board disposed alongside the first inner board having a first face and a second face in parallel and in spaced relation with the first face of the second inner board and a first hole and a second hole extending through the first and second faces of the second inner board, the second inner board disposed alongside the first inner board;
- a first outer board having a first face and a second face in parallel and in spaced relation with the first face of the first outer board and a first hole and a second hole extending through the first face of the first outer board, the first outer board disposed adjacent the first inner board with the first inner board disposed between the first outer board and the second inner board;
- a second outer board having a first face and a second face in parallel and in spaced relation with the first face of the second outer board and a first hole and a second hole extending through the first face of the second outer board, the second outer board disposed adjacent the second inner board with the second inner board disposed between the second outer board in the first inner board;
- a first cross member extending through the first holes of the first and second inner boards and the first and second outer boards but not extending through the outer faces of the first and second outer boards;
- and
- a second cross member extending through the second holes of the first and second inner boards in the first and second outer boards but not extending through the outer faces of the first and second outer boards.
5 more elements
A method for forming a work scaffold comprising the steps of:
- inserting a first cross member through a first hole that extends through a first face and a second face of a first inner board and through a first hole in a first face of a first outer board but not through a second face of the first outer board;
- inserting a second cross member through a second hole that extends through the first face and the second face of the first inner board and through a second hole in the first face of the first outer board but not through the second face of the first outer board;
- inserting the first cross member through a first hole that extends through a first face and a second face of a second inner board and through a first hole in a first face of a second outer board but not through a second face of a second outer board;
- inserting the second cross member through a second hole that extends through the first face and the second face of the second inner board and through a second hole in the first face of the second outer board but not through the second face of the second outer board;
- placing a first end cap on a first end of the first and second inner boards and the first and second outer boards;
- placing a second end cap on a second end of the first and second inner boards and the first and second outer boards;
- attaching a first leg assembly in proximity to the first and cap;
- and
- attaching a second leg assembly in proximity to the second and cap.
6 more elements
Dependencies are inferred from the claim text.