Motorized system on stairway for accessing space above or below an elevated structure
Number of patents in Portfolio can not be more than 2000
United States of America
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Dec 24, 2024
Grant Date -
N/A
app pub date -
Apr 15, 2024
filing date -
Apr 15, 2024
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An automated ladder apparatus mounted on a cover and including a plurality of ladder sections to provide access to a space above or below an elevated structure, includes a pivotable cover for an opening in the elevated structure that is pivotable about a pivot axis, and a motorized system including a gearmotor and an energizable brake, the motorized system being mounted on the pivotable cover such that the motorized system and the pivotable cover are movable in unison when the pivotable cover pivots about the pivot axis, the pivotable cover being pivotable between at least a first position to allow access to the space through the opening and a second position in which the pivotable cover substantially covers the opening. The gearmotor has a gear ratio sized to allow the opening of the pivotable cover under gravity only when the energizable brake is disengaged.
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