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US 12,415,460 B2Granted
Foldable, modular, removable step
AssigneeLippert Components, Inc.
InventorsNathaniel Fuller, Scott C. McKinnon
Life of this patent
Estimating the term…
Abstract
A stowable stair assembly with step treads connected between stair stringers includes stabilizing legs positioned within a width of the treads and behind the treads. A removable hinge assembly facilitates installation of the stair assembly as well as access to the stair assembly.
Claims18
A stowable stair assembly comprising:
- a first stair stringer;
- a second stair stringer aligned with the first stair stringer;
- a plurality of step treads connected between the first and second stair stringers;
- a first stabilizing leg coupled with the first stair stringer;
- and
- a second stabilizing leg coupled with the second stair stringer,
- wherein each of the first and second stabilizing legs includes a channel part and a telescoping part such that each of the telescoping parts is independently displaceable in a respective one of the channel parts between a retracted position and an extended position, wherein the channel parts of the first and second stabilizing legs are secured on inside facing surfaces of the first and second stair stringers, respectively, and wherein the first and second stabilizing legs are positioned within a width of the step treads and behind the step treads.
4 more elements
A stowable stair assembly comprising:
- a first stair stringer;
- a second stair stringer aligned with the first stair stringer;
- a plurality of step treads connected between the first and second stair stringers;
- a first stabilizing leg coupled with the first stair stringer;
- a second stabilizing leg coupled with the second stair stringer,
- wherein each of the first and second stabilizing legs includes a channel part and a telescoping part, wherein the channel parts of the first and second stabilizing legs are secured on inside facing surfaces of the first and second stair stringers, respectively, and wherein the first and second stabilizing legs are positioned within a width of the step treads and behind the step treads;
- and
- a threshold plate connected between the first and second stair stringers, the threshold plate including pairs of hinge receptacles at ends thereof.
5 more elements
A stowable stair assembly comprising:
- a stair framework including a plurality of step treads;
- a threshold plate connected to the stair framework, the threshold plate including pairs of hinge receptacles at ends thereof;
- a hinge plate securable to a structure, the hinge plate including hinge channels, wherein the hinge receptacles of the threshold plate are positionable into alignment with the hinge channels of the hinge plate;
- and
- a pair of spring-loaded hinge pins including a pin member positionable through the hinge channels and the hinge receptacles and a spring member positioned between the pairs of hinge receptacles, wherein the spring member biases the spring-loaded hinge pins into engagement with the hinge channels and the hinge receptacles.
2 more elements
Dependencies are inferred from the claim text.