Step Ladder
OwnerGunnar Leminventor
Life of this patent
Estimating the term…
Abstract
A step or rung ladder is disclosed, which can be folded together into a compact unit under transport. The step or rung ladder includes two step frame sections (1, 2) connected by lockable hinges (3, 3′), and two support frame sections (9, 6) also connected by lockable hinges (8, 8′). The step frame is connected to the support frame in its upper end by hinges (15, 15′). A support or safety rail is connected to the upper end of the step frame, either rigidly or by a third set of lockable hinges (10, 10′).
Claims10
A step ladder or rung ladder including a step frame and a support frame, a platform (14) connecting said first step frame and said first support frame,
- characterized in said step frame including a first step section (1) with a first end and a second end, said first step section (1) including a number of steps or rungs, and a second step section (2) with a first end and a second end, said second step section including a number of steps or rungs,
- a first set of lockable hinges (3, 3′) connecting the second end of said first step section (1) with the first end of said second step section (2),
- said support frame including a first support section (9) with a first and a second end, and a second support section (6) with a first and a second end,
- a second set of lockable hinges (8, 8′) connecting the second end of said first support section (9) with the first end of said second support section (6),
- said ladder further including a third set of hinges (15, 15′) connecting the first end of said first support section (9) to the first step section (1) in a point near the first end of the first step section (1),
- a support rail (11) arranged as a fixed extension of said step frame , wherein said support rail (11) is supported in a support axis located in said third set of hinges (15, 15′) and may turn about a rotation axis located in said first set of lockable hinges (3, 3′), said rotation axis being located below said support axis.
A step ladder or rung ladder including a step frame and a support frame, a platform (14) connecting said first step frame and said first support frame,
- characterized in said step frame including a first step section (1) with a first end and a second end, said first step section (1) including a number of steps or rungs, and a second step section (2) with a first end and a second end, said second step section including a number of steps or rungs,
- a first set of lockable hinges (3, 3′) connecting the second end of said first step section (1) with the first end of said second step section (2),
- said support frame including a first support section (9) with a first and a second end, and a second support section (6) with a first and a second end,
- a second set of lockable hinges (8, 8′) connecting the second end of said first support section (9) with the first end of said second support section (6),
- said ladder further including a third set of hinges (15, 15′) connecting the first end of said first support section (9) to the first step section (1) in a point near the first end of the first step section (1),
- a support rail (11) connected to said first step section (1) or said first support section (9) in said third hinges (13, 13′) or in fourth lockable hinges (10, 10′).
Dependencies are inferred from the claim text.