ELEVATED WORKING PLATFORM AND RELATED METHODS

• US 20190100964A1
• Filed: 12/03/2018
• Published: 04/04/2019
• Est. Priority Date: 01/23/2012
• Status: Active Grant

• Current Assignee: Little Giant Ladder Systems LLC (Wing Enterprises Incorporated)
• Original Assignee: Wing Enterprises Incorporated
• Inventors: Moss, N. Ryan, Penrod, Darius S., Russell, Brian, Peterson, Sean, Jonas, Gary
• Granted Patent: US 10,641,041 B2
• Time in Patent Office: Days
• CPC Class Codes: E06C 1/393 Ladders having platforms foldable with the ladder
• CPC Class Codes: E06C 1/397 characterised by having wheels, rollers, or runners
• CPC Class Codes: E06C 7/182 situated at the top of the ladder
• CPC Class Codes: E06C 7/185 Devices providing a back support to a person on the ladder, e.g. cages
• CPC Class Codes: E06C 7/423 Ladder stabilising struts

Abstract

Elevated work platforms, as well as associated methods, are provided. In one particular embodiment, an elevated platform apparatus is provided comprising a first rail assembly having a pair of rails coupled with a plurality of rungs, a second rail assembly hingedly coupled with the first rail assembly, a platform configured to rest upon a portion of the first rail assembly and the second rails assembly and a cage associated with the platform. The cage may include at least one bar and at least one gate, the at least one gate being configured to swing in a first direction upon a user stepping on to the platform from the first rail assembly, and then swing back to a closed position after the user is standing on the platform. The at least one gate is also limited from being displaced in a second direction, opposite the first direction, beyond the closed position.

Claims

1. An elevated platform apparatus comprising:

a first assembly having first inner rail assembly slidably coupled with a first outer rail assembly;

a second assembly having a second inner rail assembly slidably coupled with a second outer rail assembly the second assembly being hingedly coupled with the first assembly, the first assembly and the second assembly being selectively positionable relative to each other between a deployed state and a collapsed state;

a platform pivotally coupled with the first assembly and configured to extend between spaced apart portions of the first assembly and the second assembly when they are in the deployed state;

a cage including at least one frame member and at least one gate collectively forming a barrier substantially surrounding an area above the platform when the first and second assemblies are in the deployed state and when the at least one gate is in a closed position, the at least one gate being selectively positionable from a closed position to an open position wherein the at least one gate is rotated inwardly such that a portion of the at least one gate extends into the area surrounding the platform, and wherein the at least one gate is limited from rotating outwardly away from the area above the platform beyond the closed position;

at least one locking mechanism configured to selectively lock the first inner rail assembly at a specified location relative to first outer rail assembly; and

at least one adjustment mechanism associated with the first assembly and configured to assist adjustment of the first inner rail assembly from a first position relative to the first outer rail assembly to a second position relative to the first outer rail assembly.

2. The apparatus of claim 1, wherein the at least one adjustment mechanism includes a rope and pulley system.

3. The apparatus of claim 1, further comprising at least one other locking mechanism configured to selectively lock the second inner rail assembly at a specified location relative to second outer rail assembly.

4. The apparatus of claim 1, wherein the first inner rail assembly includes a pair of spaced apart rails coupled with a plurality of rungs:

5. The apparatus of claim 4, wherein the first outer rail assembly includes an additional pair of spaced apart rails coupled with an additional plurality of rungs.

6. The apparatus of claim 1, wherein, when the first assembly and the second assembly are in the collapsed state, the platform is positioned adjacent the at least one gate.

7. The apparatus of claim 1, wherein the at least one gate includes a pair of gates.

8. The apparatus of claim 1, further comprising a locking member configured to releasably lock the platform with the second assembly when the first and second assemblies are in the deployed state.

9. The apparatus of claim 1, wherein the at least one gate is biased towards the closed position.

10. The apparatus of claim 1, further comprising at least one pair of wheels coupled with the apparatus.

11. The apparatus of claim 10, wherein the at least one pair of wheels includes:

a first pair of wheels coupled with at least one of the first assembly and the second assembly at a fixed location;

a second pair of wheels coupled with the first assembly, the second pair of wheels including at least one retraction mechanism;

a third pair of wheels coupled with the second assembly, the third pair of wheels including at least one retraction mechanism.

12. The apparatus of claim 11, wherein the first pair of wheels are positioned such that they do not contact a supporting surface when the apparatus is positioned on the supporting surface in a deployed state and in an orientation of intended use.

13. The apparatus of claim 1, wherein the at least one frame member includes a first frame member and a second frame member.

14. The apparatus of claim 12, wherein the first frame member is positioned at a first height above the platform when the first and second assemblies are in the deployed position and wherein the second frame member is positioned at a second height above the platform when the first and second assemblies are in the deployed position, the second height being greater than the first height.

15. The apparatus of claim 13, further comprising a flexible material extending upward from the platform to at least the first frame member.

16. The apparatus of claim 1, further comprising at least one adjustable stabilizer coupled with at least one of the first rail assembly and the second rail assembly.