A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Telescopic ladder with retractable stabiliser bars
A ladder 10 with rungs secured to telescopically collapsible stile sections 11a, 11b and at least one stabiliser bar 12a, 12b secured to the foot of the ladder. The (or each) stabiliser bar can be moved from a storage position in which the bar lies between the two stiles and a deployed position in which the bar widens the footprint of the ladder to improve its lateral stability. An inextensible member, which may be a rod 20, is connected to extend downwardly from the uppermost stile section of the ladder and a catch mechanism 30 is provided at the foot of the ladder which may engage the lower end of the rod to prevent the ladder from being extended. The catch mechanism 30 is operable by the (or a) stabiliser bar to release the rod and permit the ladder to be extended only when the stabiliser bar is in the deployed.
Telescopic ladder with retractable stabiliser bars
A ladder 10 with rungs secured to telescopically collapsible stile sections 11a, 11b and at least one stabiliser bar 12a, 12b secured to the foot of the ladder. The (or each) stabiliser bar can be moved from a storage position in which the bar lies between the two stiles and a deployed position in which the bar widens the footprint of the ladder to improve its lateral stability. An inextensible member, which may be a rod 20, is connected to extend downwardly from the uppermost stile section of the ladder and a catch mechanism 30 is provided at the foot of the ladder which may engage the lower end of the rod to prevent the ladder from being extended. The catch mechanism 30 is operable by the (or a) stabiliser bar to release the rod and permit the ladder to be extended only when the stabiliser bar is in the deployed.
Telescopic ladder with retractable stabiliser bars
RICHARD WESTON (author)
2017-12-13
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern