Tubular access ladder and method
AssigneeWerner Co.
InventorThomas W. Parker
Life of this patent
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Abstract
An access ladder includes a plurality of sections connected together to telescope between an extended position and a retracted position that has an increasing reactive force to counterbalance the weight of the sections as they extend. A method for accessing a room with a ladder connected to a ceiling including the steps of moving the ladder to a fully extended position subject to an increasingly active force to counterbalance the weight of the ladder as it extends. There is the step of retracting the ladder into a retracted position in the ceiling.
Claims13
An access ladder comprising:
- a plurality of sections connected together to telescope between an extended position and a retracted position that has an increasing reactive force to counterbalance the weight of the sections as they extend.
A method for accessing a room with a ladder connected to a ceiling comprising the steps of:
- moving the ladder to a fully extended position subject to an increasingly active force to counterbalance the weight of the ladder as it extends;
- and
- retracting the ladder into a retracted position in the ceiling.
Dependencies are inferred from the claim text.