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US 2014/0066240 A1Published application
Polygon Compensation Coupling for Chain and Sprocket Driven Systems
AssigneeOtis Elevator Company
InventorsWalter Srb-Gaffron, Alexander Turek
Life of this patent
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Abstract
A polygon compensation coupling system for reducing a polygon effect in a chain driven system is disclosed. The polygon compensation coupling system may include a chain sprocket and a main drive in engagement with the chain sprocket, such that the engagement defines a compensation curve to reduce the polygon effect.
Claims23
A polygon compensation coupling system, the system comprising:
- a chain sprocket;
- and
- a main drive in engagement with the chain sprocket, the engagement defined by a compensation curve to reduce a polygon effect.
A passenger conveyor system, the system comprising:
- a plurality of treads guided by a step chain in an endless loop about a step chain sprocket for transporting objects from one location to another;
- and
- a main drive in engagement with the step chain sprocket, the engagement defined by a compensation curve as the step chain sprocket and the main drive rotate with constant average angular velocities but non-constant instantaneous angular velocities.
A method of reducing a polygon effect in a chain driven system, the method comprising:
- providing a chain driven by a chain sprocket and a main drive;
- engaging the chain sprocket with the main drive;
- rotating the chain sprocket and the main drive with constant average angular velocities but non-constant instantaneous angular velocities;
- and
- providing a compensation curve to maintain a substantially constant linear speed of the chain.
2 more elements
Dependencies are inferred from the claim text.