A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LOCKING JOINT FOR COLLAPSIBLE LADDERS AND OTHER STRUCTURES
A ladder comprising: a first ladder section including two rails and at least two rungs, each rung extending between the two rails, the first ladder section including a first ladder section connecting end having a first ladder section locking feature; a second ladder section including at least one rail and having a second ladder section connecting end having a second ladder section locking feature; a cam element slidably disposed along a rail of a first one of the first and second ladder section connecting ends, the cam element having an internal cam surface; and a male hinge element provided on a second one of the first and second ladder section connecting ends and having a transverse connecting element having a cam follower, the transverse connecting element extending into a path along which the cam element is configured to slide along the rail such that the cam follower selectively contacts the internal cam surface; wherein sliding movement of the cam element to an unlocked position allows the first and second ladder sections to rotate relative to each other while sliding movement of the cam element to a locked position causes the first ladder section locking feature and the second ladder section locking feature to engage each other to prohibit relative rotation between the first and second ladder sections.
LOCKING JOINT FOR COLLAPSIBLE LADDERS AND OTHER STRUCTURES
A ladder comprising: a first ladder section including two rails and at least two rungs, each rung extending between the two rails, the first ladder section including a first ladder section connecting end having a first ladder section locking feature; a second ladder section including at least one rail and having a second ladder section connecting end having a second ladder section locking feature; a cam element slidably disposed along a rail of a first one of the first and second ladder section connecting ends, the cam element having an internal cam surface; and a male hinge element provided on a second one of the first and second ladder section connecting ends and having a transverse connecting element having a cam follower, the transverse connecting element extending into a path along which the cam element is configured to slide along the rail such that the cam follower selectively contacts the internal cam surface; wherein sliding movement of the cam element to an unlocked position allows the first and second ladder sections to rotate relative to each other while sliding movement of the cam element to a locked position causes the first ladder section locking feature and the second ladder section locking feature to engage each other to prohibit relative rotation between the first and second ladder sections.
LOCKING JOINT FOR COLLAPSIBLE LADDERS AND OTHER STRUCTURES
SPERRVERBINDUNGSSTÜCK FÜR ZUSAMMENKLAPPBARE LEITERN UND ANDERE STRUKTUREN
JOINT DE VERROUILLAGE POUR ÉCHELLES PLIABLES ET AUTRES STRUCTURES
GALLUP BENJAMIN (author) / BALL NATHAN (author) / SCHMID BRYAN (author) / WALKER DANIEL (author)
2016-08-03
Patent
Electronic Resource
English
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