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US 5,511,585 AGranted
Method and device for providing fluid resistance within a flow passageway
AssigneeThe Lee Company
InventorLeighton Lee, II
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AssigneeThe Lee Company
InventorLeighton Lee, II
Estimating the term…
A method for providing resistance to flow through a flow passageway comprises partially blocking flow through an orifice of reduced diameter by masking the orifice with an element formed of porous material retained immediately adjacent to every side of the orifice that is expected to be exposed to higher pressure fluid with a greater surface area of the porous masking element being exposed to fluid in the passageway on the higher pressure side of the orifice than is exposed by the orifice to the lower pressure fluid. The orifice may be formed by direct configuration of the passageway walls or by a body adapted to retain the masking element in the body, the outside of the body being adapted to for secure installation within the flow passageway. Resistors in accordance with the present method may have masking elements on one side for use with one directional pressure differentials or masking elements on both sides for use in applications in which bidirectional pressure differentials are anticipated.
A method of achieving fluid resistance within a flow passageway comprising:
A method of achieving fluid resistance within a flow passageway comprising:
A device for achieving fluid resistance within a flow passageway comprising a body, an orifice of reduced internal diameter formed within the resistor body, and means for reducing the area open to flow to less than the area of the orifice comprising at least one masking element formed of a porous material and having a substantially flat surface, at least one masking element being retained with the flat surface in direct contact with the orifice and substantially normal to the axis of the orifice, with a radial clearance existing around at least a portion of the masking element.
Dependencies are inferred from the claim text.