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Foldable and angularly adjustable ladder
Foldable and angularly adjustable ladder A foldable and angularly adjustable ladder includes two side supports (1) and multiple stair treads (2) disposed between the two side supports (1). Two ends of each of 5 the stair treads (2) are rotatably connected with the side supports (1), respectively. Each of the side supports (1) includes an upper pole (101) and a lower pole (102) parallel to the upper pole (101). Two foot covers (3) are disposed at a lower end of the side supports (1), respectively. Two upper poles (101) and two lower poles (102) are connected with two end surfaces of the each of the stair treads (2) through four connectors (4), respectively. Each 10 of the connectors (4) is sleeved with a metal ring piece (5), one end of the metal ring piece (5) passes through one of the end surfaces of the each of the stair treads (2) and is located at an inner side of the each of the stair treads (2). The ladder prevents side plates of the stair treads (2) from directly contacting the side supports (1) for reducing the loss therebetween. Fig. 1
Foldable and angularly adjustable ladder
Foldable and angularly adjustable ladder A foldable and angularly adjustable ladder includes two side supports (1) and multiple stair treads (2) disposed between the two side supports (1). Two ends of each of 5 the stair treads (2) are rotatably connected with the side supports (1), respectively. Each of the side supports (1) includes an upper pole (101) and a lower pole (102) parallel to the upper pole (101). Two foot covers (3) are disposed at a lower end of the side supports (1), respectively. Two upper poles (101) and two lower poles (102) are connected with two end surfaces of the each of the stair treads (2) through four connectors (4), respectively. Each 10 of the connectors (4) is sleeved with a metal ring piece (5), one end of the metal ring piece (5) passes through one of the end surfaces of the each of the stair treads (2) and is located at an inner side of the each of the stair treads (2). The ladder prevents side plates of the stair treads (2) from directly contacting the side supports (1) for reducing the loss therebetween. Fig. 1
Foldable and angularly adjustable ladder
CHONG KWOK LAI (author)
2021-11-04
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern
Roofing Ladder with a Modular Angularly Adjustable Platform
| European Patent Office | 2015
Roofing ladder with a modular angularly adjustable platform
| European Patent Office | 2016