The invention relates to a ladder (10) comprising at least one rail (11) and a plurality of steps (12) rigidly attached to the at least one rail (11). The ladder is characterized in that the at least one rail (11) comprises at least two reinforcing members (14) arranged to hold the filling material, the at least one rail (11) being rigid when the reinforcing members (14) contain the filling material and the rail (11) being flexible when the reinforcing members (14) do not contain the filling material.
本发明涉及梯子(10),其包括至少一个栏杆(11)和刚性附接于所述至少一个栏杆(11)的多个梯级(12)。所述梯子的特征在于,所述至少一个栏杆(11)包括设置为保持填充材料的至少两个加强构件(14),所述至少一个栏杆(11)在加强构件(14)包含填充材料时是刚性的并且所述栏杆(11)在加强构件(14)不包含填充材料时是柔性的。
Ladder comprising at least one rail and plurality of steps
包括至少一个栏杆和多个梯级的梯子
19.07.2024
Patent
Elektronische Ressource
Chinesisch
LADDER COMPRISING AT LEAST ONE RAIL AND A PLURALITY OF RUNGS
Europäisches Patentamt | 2024
|Rail vehicle comprising plurality of current collectors and method for operating rail vehicle
Europäisches Patentamt | 2023
|