Dual track ladder with brake mechanism that is automatically applied to the upper tracks to hold the ladder in place during use
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United States of America Patent
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Jul 20, 2010
Grant Date -
Dec 10, 2009
app pub date -
Jun 9, 2008
filing date -
Jun 9, 2008
priority date (Note) -
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Abstract
The ladder system is disposed between two spaced storage shelves of the types found in crowded warehouses. The ladder is mounted on overhead guide tracks and may be moved longitudinally along the shelves and laterally between the shelves. Locating means are provided for immobilizing the ladder against movement laterally and longitudinally. The locating means includes a pair of spring-loaded casters and rubber pads at the lower end of the ladder and a pair of braking mechanisms overlying and engageable with the guide tracks when subjected to the weight of the user to prevent movement of the ladder at the top thereof either intentionally or unintentionally. Finally, a lateral brake is carried by the ladder which prevents the roller carriage from moving laterally. The brake is applied when the ladder is in use.
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