Patent ID: 7234203
Filing Date: 2007-06-26
Classification: E04F,E06C,Y10T

Abstract:
1. A foldable ladder configured for installation in an opening to provide access between one floor or space and another floor or space, comprising: an upper ladder section having at least one rail; a lower ladder section having at least one rail; a locking hinge connecting the rail of the upper ladder section to the rail of the lower ladder section and configured to allow the lower ladder section to fold relative to the upper ladder section, wherein when the upper ladder section and the lower ladder section are fully unfolded, the locking hinge being adjustable between at least two configurations, in a first configuration, the locking hinge completely preventing the lower ladder section from folding relative to the upper ladder section, and in a second configuration, the locking hinge allowing the lower ladder section to fold relative to the upper ladder section; wherein the locking hinge comprises: a hinge latch positioned between the first and second opposing hinge plates, the