Elevator noise minimizer
AssigneeOtis Elevator Company
InventorsYoung S. Yoo, John K. Salmon, Keith Worsley
Life of this patent
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Abstract
A car door seal, comprising a brush, is utilized to seal the openings between a closed car door and an elevator car and to minimize backlash between the car doors and the car. By utilizing a brush, such uneven openings are effectively sealed because the brushes bend for narrower openings between the car door and the car. The brush also provides an effective damping and spring force between the door and the car. As a result, door rattle, caused by backlash and aerodynamically induced vibration loads during car travel, is minimized thereby minimizing vibration and noise within the interior of the car.
Claims7
Apparatus for minimizing noise and vibration in an elevator car, said car having an exterior, an interior, and a door, said door acting as a barrier to said interior and having a length of travel, said apparatus comprising:
- unitary means for minimizing infiltration of noise through gaps between said door and said exterior and for minimizing backlash between said door and said exterior, said means extending from one of said door or said exterior of said car toward an other of said door or said exterior of said car, said unitary means has a spring force to effect a minimizing of the backlash between the door and the exterior and which extends along the door to substantially close a vertical gap between the door and the exterior to minimize infiltration of noise.
Dependencies are inferred from the claim text.