Adjustable joint assembly for ladder sections

Details Adjustable joint assembly for ladder sections Adjustable joint assembly for ladder sections

1995-05-10

1997-04-15

Stodola, Daniel P.

Joints and connections

Articulated members

Lockable at fixed position

403 92, 403 84, 182163, F16C 1100

Patent

active

056202725

ABSTRACT:
The angle between adjacent ladder sections may be adjusted by a joint assembly having two base plates secured to the sections, wherein a locking rod extending through one base plate is selectively engageable within one of plural blind holes in the other base plate to maintain the base plates and sections at a desired angle. A locating plate maintains the locking rod in an unlocked position to permit the angle between the plates and sections to be adjusted by a single user.

REFERENCES:
patent: 4290168 (1981-09-01), Binge
patent: 4407045 (1983-10-01), Boothe
patent: 4602889 (1986-07-01), Mu-Shan
patent: 4614452 (1986-09-01), Wang
patent: 5219240 (1993-06-01), Kitamura
patent: 5265969 (1993-11-01), Chuang
patent: 5353892 (1994-10-01), Lu

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