Pulling device for foldable ladder joint

Details Pulling device for foldable ladder joint Pulling device for foldable ladder joint

1998-04-30

1999-11-30

Stodola, DAniel P.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

Collapsible ladder

16329, 16332, 403 92, E06C 100

Patent

active

059925663

ABSTRACT:
A pulling device for a foldable ladder joint, comprising: two inner bodies, having facing front surfaces, with aligned sets of three arc-shaped holes each along a circular path; an arc-shaped piece, inserted between the front surfaces of the two inner bodies, extended along the circular path and glidingly movable along the circular path, guided by pins or projections, which extend into the arc-shaped holes of the inner bodies; and a spring with two ends, which are held on a fixed position on one of the inner bodies and one end of the arc-shaped piece, so as to exert an elastic force on the arc-shaped piece along the circular path.

REFERENCES:
patent: 4566150 (1986-01-01), Boothe
patent: 4577986 (1986-03-01), Wang
patent: 4602889 (1986-07-01), Mu-Shan
patent: 4666328 (1987-05-01), Ryu
patent: 4770559 (1988-09-01), Yoo
patent: 4824278 (1989-04-01), Chang
patent: 5026198 (1991-06-01), Lin
patent: 5620272 (1997-04-01), Sheng

Affiliated with

Also associated with

Rating

Pulling device for foldable ladder joint does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulling device for foldable ladder joint, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulling device for foldable ladder joint will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1660976