Importance

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Abstract

A hydraulic elevator system includes a tank and power unit configured with noise and/or vibration abatement features. In one aspect the tank may include an insulated and sealed lid. In another aspect tank-to-floor dampening pads may be used. In another aspect the tank may have an increased thickness and/or stiffening trays or panels may be installed on the tank. Still in yet other aspects the noise and/or vibration abatement features may be associated with the power unit. For instance, in one aspect of the present disclosure the power unit may mount to the tank using a plurality of isolators. In another aspect, silencers and/or an expansion tank may be used to alter the hydraulic fluid flow properties within the system. Still yet, in another aspect certain noise generating components of the power unit may be wrapped in a noise blanket having an air barrier within.

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First Claim