Multi-position safety lock joint, particularly for folding ladde

Details Multi-position safety lock joint, particularly for folding ladde Multi-position safety lock joint, particularly for folding ladde

1975-07-10

1976-05-11

Machado, Reinaldo P.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Sash balances

Spring

182163, 403 93, E05D 1110, F16C 1100, E06C 750

Patent

active

039552403

ABSTRACT:
A freely rotatable disk formed with projections is held in a given position by a spring. The projections and the notches between the projections are selectively engageable by a handle element to deflect the disk, upon operation of the handle element, from its rest position and hold the handle element in an extended position permitting release of a locking bar effecting disengagement with a cooperating locking disk respectively secured to stringer or rail elements of a ladder, to permit the elements to pivot with respect to each other; the spring returning the disk upon movement of the handle to permit engagement of the locking bar, so that the disk, in one position, securely holds the handle and prevents spurious unlocking of the locking bar, and holds the handle in lock-release position to permit free pivoting of the ladder rail or stringer elements when in another position.

REFERENCES:
patent: 3643292 (1972-02-01), Mayer
patent: 3655012 (1972-04-01), Hoffman
patent: 3879146 (1975-04-01), Mayer

Affiliated with

Also associated with

Rating

Multi-position safety lock joint, particularly for folding ladde does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-position safety lock joint, particularly for folding ladde, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-position safety lock joint, particularly for folding ladde will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1293821