Stepboard for ladders
AssigneeKrause-Werk GmbH & Co. KG
InventorGuenther Krause
Life of this patent
Estimating the term…
Abstract
A collapsible ladder having vertical and horizontal ladder parts has a stepboard detachably mounted on the horizontal ladder part. The stepboard has a width which is less than or equal to the separation between uprights of the horizontal ladder part and retaining members for detachably securing the stepboard to the rungs of the horizontal ladder part.
Claims26
A stepboard for a ladder having a pair of parallel uprights separated by a distance h and connected by a plurality of rungs, the stepboard comprising:
- a board having a surface and a width b less than or equal to the separation h between uprights;
- and
- a plurality of retaining members secured to the surface of the board for detachably securing the board to the rungs between the uprights, each of the retaining members comprising a bracket secured to the surface of the board and a Z-shaped retaining hook, the hook comprising a first retaining piece pivotably connected to the bracket for pivoting about an axis parallel to the surface of the board, a second retaining piece extending parallel to the surface of the board, and a web connecting the first and second retaining pieces;
A stepboard according to claim 16 wherein the first end of the spring has a U-shaped portion into which the retaining hook fits at the recess.
A ladder comprising:
- first and second vertical ladder parts, each vertical ladder part having an upper end and a lower end and a pair of parallel uprights connected by rungs and extending between the upper and lower ends;
- a horizontal ladder part comprising first and second sections, each of the sections having a first end pivotably connected to the upper end of one of the vertical ladder parts, a second end pivotably connected to the second end of the other section, a pair of parallel uprights extending between its first and second ends and separated by a distance h, and a plurality of rungs connecting the uprights;
- and
- a stepboard mounted on the first section of the horizontal ladder part, the stepboard comprising a board having a surface extending parallel to the uprights of the first section and a width b which is less than or equal to the separation h between the uprights of the first section, and first and second retaining members secured to the surface of the board for detachably securing the board to the rungs between the uprights of the first section,
- wherein each retaining member comprises a Z-shaped retaining hook including a first retaining piece having a first longitudinal axis and pivotably supported by the board for pivoting about the first longitudinal axis, a second retaining piece having a second longitudinal axis parallel to the first longitudinal axis, and a web connecting the first and second retaining pieces.
A stepboard for a ladder having a pair of parallel uprights separated by a distance h and connected by a plurality of rungs, the stepboard comprising:
- a board having a surface and a width b less than or equal to the separation h between uprights;
- and
- a plurality of retaining members secured to the surface of the board for detachably securing the board to the rungs between the uprights, each of the retaining members comprising a Z-shaped retaining hook including a first retaining piece having a first longitudinal axis and pivotably supported by the board for pivoting about the first longitudinal axis, a second retaining for engaging one of the rungs of the ladder, and a web connecting the first and second retaining pieces.
Dependencies are inferred from the claim text.