Brace fastener for a folding ladder

Year	Description
1991	Invention patented by Ching-Tsai Lin on August 29th, 1991. Abstract: A brace fastener for holding a step brace in position when the folding ladder in which said step brace is fastened is set up into shape, comprising a spring plate in an inverted T shape attached to either sidepiece of said folding ladder to hold a hook member in place and a control member movably hooked in said hook member for performing a second-order lever. Attaching said control member to the outer surface of the sidepiece of the folding ladder permits the hook member to be moved into a locking position to lock the step brace in position when the folding ladder is set up. Rotating the control member downwards causes the hook member to disconnect from the step brace so that the folding ladder can be collapsed.
Source: selected by the editor from original sources.

Invention: Brace fastener for a folding ladder