Joints and connections – Articulated members – Lockable at fixed position
Patent
1986-05-01
1987-02-24
Kundrat, Andrew V.
Joints and connections
Articulated members
Lockable at fixed position
403 96, 182163, 16332, F16C 1100, E06C 750
Patent
active
046453717
ABSTRACT:
Improvements in a joint mechanism in which a resilient leaf spring is mounted at its tail end on a first joint member at a location adjacent one side of a locking piece engageable in notches formed in the circumferential edge of a hollow locking disk of a second joint member and its free front end being provided with a bent portion good enough to retain the front end of the locking piece. While the locking piece is being lifted up from the associated notch upon operation of an operating lever provided on the first joint member, the bent portion at the front end of the resilient leaf spring automatically swiftly moves under its own elasticity into the front end of the locking piece to lock it from engaging again in the notch thereby permitting a change in the angular position of the joint to be made. In order to attain the locking/releasing purposes in the locking piece, only when the two joint members pivotably connected together are folded in an opposite direction relative to one another, wherein one edge of the notch will push the blocking bent portion of the resilient leaf spring away from the front end of the locking piece, will the locking piece be able to fall into the notch.
REFERENCES:
patent: 3643292 (1972-02-01), Mayer
patent: 3955240 (1976-05-01), Schuh et al.
patent: 4474264 (1984-10-01), Krause
patent: 4540306 (1985-09-01), Wang
patent: 4543006 (1985-09-01), Wang
patent: 4577986 (1986-03-01), Wang
LandOfFree
Safety joint mechanism, particularly for folding ladders does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety joint mechanism, particularly for folding ladders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety joint mechanism, particularly for folding ladders will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-106512