Elliptical Gear Drive - Air duct damper control linearized the air flow as a function of opening time. Non-circular gears solved the problem and much lower cost than electronic controls.

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PR Lichtman Company - New England Boston Massachusetts Engineering - 617.527.0649



PR Lichtman Company - Mechanisms - Air duct damper control linearized the air flow as a function of opening time. Non-circular gears solved the problem and much lower cost than electronic controls.

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