FIELD: construction structures.
SUBSTANCE: step-ladders having devices for increasing stability intended for work in premises, gardens, and summer cottages. The step-ladder consists of racks, a platform, supporting elements attached to the lower ends of the racks, while the supporting elements are made in plan in the form of circular arcs, the centre of which on a horizontal plane in the working position of the ladder coincides with the projection onto this plane of the middle platform.
EFFECT: ability to manufacture stable step-ladders with a greater height of the platform, ensuring human safety during work and the associated convenience during work and increasing labour productivity.
2 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| STEPLADDER | 2019 |
|
RU2716315C1 |
| STEP-LADDER TROLLEY | 2023 |
|
RU2825626C1 |
| STEPLADDER | 1993 |
|
RU2065019C1 |
| FOLDING SCAFFOLD | 0 |
|
SU1106884A1 |
| RUNG LADDER | 2001 |
|
RU2186921C1 |
| CONVERTIBLE VEHICLE | 2002 |
|
RU2217119C1 |
| METHOD AND APPARATUS FOR ENSURING SAFETY DURING UNLOADING AND LOADING OF ROLLED METAL FROM (INTO) A RAILWAY CAR | 2021 |
|
RU2774825C1 |
| STEPLADDER | 0 |
|
SU1758199A1 |
| STOP MECHANISM FOR COLLAPSIBLE LADDER | 2006 |
|
RU2402670C2 |
| LADDER | 2015 |
|
RU2592272C1 |
