Positioning joint for folding ladders

Joints and connections – Articulated members – Lockable at fixed position

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

182163, 16332, 16334, 16349, F16C 1100, E05D 1110, E06C 750

Patent

active

045403066

ABSTRACT:
A joint having two joint members which are pivotable with respect to each other about a common axis is lockable in a series of predetermined angular positions by engaging a spring-biased pawl provided within one member in notches formed at the peripheral edge of the other member. In manually operating the joint, the forked release element and the handle pivotably connected with each other act as an operating lever in cooperation with the clawed, spring-loaded control means in controlling locking and unlocking of the joint. The claw like stop portion of the control means, when being pushed to one side within the slot having its length at least twice longer than the width of the notch by the release element in counter-clockwise direction, permits engagement of the pawl in the notches and, upon operation of the handle thereby disengaging the pawl from the notches, returns to rest position under its spring force in clockwise direction. In this position, the stop portion, by pressing against the back of the release element in blocking the pawl from falling back to the notches, effectively prevents engagement of the pawl in the notches to permit free pivoting of the joint.

REFERENCES:
patent: 3412420 (1968-11-01), Seckerson
patent: 3655012 (1972-04-01), Hoffman et al.
patent: 3955240 (1976-05-01), Schuh et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Positioning joint 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 Positioning joint for folding ladders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positioning joint for folding ladders will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1425709

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.