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US 11,952,837 B1Granted
Collapsible ladder
AssigneeT-H Marine Supplies, LLC
InventorJohn W. Carter
Life of this patent
Estimating the term…
Abstract
A collapsible ladder with steps that remained stored within the frame or automatically deploy for use. The ladder can be manual, semi-automatic, or remote controlled.
Claims20
A compactable ladder, comprising:
- a. an elongated main support beam;
- b. at least one set of steps attached to said elongated main support beam and rotatable between a use position and a storage position;
- c. an elongated hollow storage tube for storing said elongated main support beam and said steps;
- d. a guide block assembly pivotably attached to the elongated main support beam;
- and
- e. at least one upper support arm having a first terminal end and a second terminal end, wherein the first terminal end is connected to the guide block assembly and the second terminal end is connected to a step of the at least one set of steps positioned closest to the guide block assembly, and wherein the step positioned closest to the guide block assembly is automatically rotated from the storage position to the use position when the elongated main support beam is pivoted downward about the guide block assembly.
3 more elements
A compactable ladder, comprising:
- a. an elongated main support beam;
- b. a plurality of steps attached to said elongated main support beam and rotatable between a use position and a storage position;
- c. a guide block assembly rotatably attached at one end of said elongated main support beam;
- d. at least one upper support arm connected at a first terminal end to the guide block assembly and connected at a second terminal end to a step of the plurality of steps positioned closest to the guide block assembly, and configured to rotate at least the step of the plurality of steps from the storage position to the use position when the elongated main support beam is rotated about the guide block assembly.
1 more element
A ladder system comprising:
- a. a main support wherein said main support is an I-beam;
- b. a plurality of steps attached to said main support I-beam and rotatable between a use position and a storage position;
- c. a guide block assembly rotatably attached at one end of said main support I-beam and having a pivot pin;
- d. at least one step spacer housed within a recess in the main support I-beam that supports the step when in the use position;
- e. a first support arm having a first end and a second end, wherein the first support arm first end hooks to the pivot pin in the guide block assembly and the first support arm second end is connected to a step of the plurality of steps positioned closest to the guide block assembly;
- and
- f. a second support arm having a first end and a second end, wherein the second support arm first end is attached to the step positioned closest to the guide block assembly and the second support arm second end is attached to a next step of the plurality of steps positioned along the main support I-beam;
- and wherein the step positioned closest to the guide block assembly as and the next step positioned along the main support I-beam are automatically rotated from the storage position to the use position when the main support L-beam is pivoted downward about the guide block assembly.
5 more elements
Dependencies are inferred from the claim text.