Invention Grant
US09278442B2 Flow control screen for use with hydraulic accumulator, hydraulic hammer using same, and manufacturing method 有权
液压蓄能器使用的流量控制屏幕,使用其的液压锤和制造方法

Flow control screen for use with hydraulic accumulator, hydraulic hammer using same, and manufacturing method
Abstract:
A hydraulic accumulator includes an accumulator housing defining a gas reservoir and a liquid volume. A flexible membrane is positioned within the accumulator housing and separates the gas reservoir and the liquid volume. A flow control screen defines a wall of the accumulator housing, has a screen thickness, and includes an exterior face opposing a membrane engagement face. A first slot is formed through the exterior face and has a first slot depth that is less than the screen thickness. A second slot is formed through the membrane engagement face and has a second slot depth that is less than the screen thickness. The first slot and the second slot intersect to fluidly connect an exterior of the accumulator housing with the liquid volume.
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