Ladders, ladder components and related methods are provided including embodiments of a hinge that may be used in a combination ladder. In one embodiment, a hinge mechanism includes a first hinge assembly and a second hinge assembly. The first and second hinge assemblies are coupled together for relative rotation about a defined axis. An adjustment mechanism enables the two hinge assemblies to be selectively locked or unlocked to prohibit or permit relative rotation, respectively. In one embodiment, the adjustment mechanism includes a lock plate displaceable along a first axis and a retainer displaceable along a second axis. The retainer is configured to hold the lock plate in a disengaged state until a release structure displaces the retainer away from the lock plate. The release structure may be configured to be actuated and displace the retainer upon relative rotation of the hinge assemblies to (or through) a predetermined angular configuration.

Ladders, ladder components and related methods are provided including embodiments of a hinge that may be used in a combination ladder. In one embodiment, a hinge mechanism includes a first hinge assembly and a second hinge assembly. The first and second hinge assemblies are coupled together for relative rotation about a defined axis. An adjustment mechanism enables the two hinge assemblies to be selectively locked or unlocked to prohibit or permit relative rotation, respectively. In one embodiment, the adjustment mechanism includes a lock plate displaceable along a first axis and a retainer displaceable along a second axis. The retainer is configured to hold the lock plate in a disengaged state until a release structure displaces the retainer away from the lock plate. The release structure may be configured to be actuated and displace the retainer upon relative rotation of the hinge assemblies to (or through) a predetermined angular configuration.

Ladders, ladder components and related methods are provided including embodiments of a hinge that may be used in a combination ladder. In one embodiment, a hinge mechanism includes a first hinge assembly and a second hinge assembly. The first and second hinge assemblies are coupled together for relative rotation about a defined axis. An adjustment mechanism enables the two hinge assemblies to be selectively locked or unlocked to prohibit or permit relative rotation, respectively. In one embodiment, the adjustment mechanism includes a lock plate displaceable along a first axis and a retainer displaceable along a second axis. The retainer is configured to hold the lock plate in a disengaged state until a release structure displaces the retainer away from the lock plate. The release structure may be configured to be actuated and displace the retainer upon relative rotation of the hinge assemblies to (or through) a predetermined angular configuration.

Ladders, ladder components and related methods are provided including embodiments of a hinge that may be used in a combination ladder. In one embodiment, a hinge mechanism includes a first hinge assembly and a second hinge assembly. The first and second hinge assemblies are coupled together for relative rotation about a defined axis. An adjustment mechanism enables the two hinge assemblies to be selectively locked or unlocked to prohibit or permit relative rotation, respectively. In one embodiment, the adjustment mechanism includes a lock plate displaceable along a first axis and a retainer displaceable along a second axis. The retainer is configured to hold the lock plate in a disengaged state until a release structure displaces the retainer away from the lock plate. The release structure may be configured to be actuated and displace the retainer upon relative rotation of the hinge assemblies to (or through) a predetermined angular configuration.

An attachment for a ladder includes a pair of spaced rails secured together by at least one rung and a removable pin at an end for securing the attachment to a standard ladder.

An attachment for a ladder includes a pair of spaced rails secured together by at least one rung and a removable pin at an end for securing the attachment to a standard ladder.

An attachment for a ladder includes a pair of rung tubes for engaging the hollow rungs of a ladder secured together by at least one end tube.

An attachment for a ladder includes a pair of rung tubes for engaging the hollow rungs of a ladder secured together by at least one end tube.

Disclosed is a deformable herringbone ladder with straight ladder function, comprising a left ladder rack, a right ladder rack and a hinge mechanism, the left ladder rack and the right ladder rack are relatively rotatable to switch the ladder between a herringbone ladder state and a straight ladder state; wherein the left ladder rack comprises two left legs and an even number of left footboards connecting the two left legs, the left footboards are parallel arranged in equal spacing, the distance between two adjacent left footboards is defined L1; the distance between two adjacent right footboards is defined L2; in the straight ladder state by rotating, the distance between the left footboard at the top portion of the left ladder rack and the right footboard at the top portion of the right ladder rack is defined L3; L1=L2=L3. The present invention conforms the Europe and America's safety technical standard.

Disclosed is a deformable herringbone ladder with straight ladder function, comprising a left ladder rack, a right ladder rack and a hinge mechanism, the left ladder rack and the right ladder rack are relatively rotatable to switch the ladder between a herringbone ladder state and a straight ladder state; wherein the left ladder rack comprises two left legs and an even number of left footboards connecting the two left legs, the left footboards are parallel arranged in equal spacing, the distance between two adjacent left footboards is defined L1; the distance between two adjacent right footboards is defined L2; in the straight ladder state by rotating, the distance between the left footboard at the top portion of the left ladder rack and the right footboard at the top portion of the right ladder rack is defined L3; L1=L2=L3. The present invention conforms the Europe and America's safety technical standard.