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US 5,732,741 AGranted
Noise suppressor
AssigneeAeroquip Corporation
InventorJeffrey C. Shiery
Life of this patent
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Abstract
A noise suppressor device for absorbing and dampening the noise of pulsating fluids is disclosed. The noise suppressor device has a housing which defines an axially extending bore. A resilient bladder is coaxially positioned in the bore. A spool assembly is coaxially positioned within the bladder. The spool assembly has a spool layer and a sleeve layer which coaxially surrounds the inner spool layer. The spool layer and the sleeve layer define a tortuous path for fluid to flow through from the axial bore to the bladder.
Claims10
A noise suppressor device comprising:
- a housing defining an axially extending bore through which pressurized fluid flows;
- a bladder coaxially positioned in the bore;
- and
- a spool assembly coaxially positioned within the bladder, the spool assembly including a spool layer with radially oriented perforations extending therethrough and a sleeve layer which axially wraps the outside surface of the spool layer, the sleeve layer being substantially thinner than the spool layer and circumferentially overlapping itself as it circumferentially wraps the spool layer;
- the sleeve layer including an axially extending leading edge and an axially trailing edge, wherein a radially expandable circumferential gap is defined between the circumferentially overlapped layers of the sleeve, the gap extending from the leading edge of the sleeve layer to the trailing edge when the sleeve layer is subjected to pressure from the pressurized fluid, the gap defining a spiral path for the pressurized fluid between the circumferentially overlapped layers of the sleeve layer of the spool assembly and the bladder.
2 more elements
Dependencies are inferred from the claim text.