In-line flow rate control device
AssigneeScience Incorporated
InventorMarshall S. Kriesel
Life of this patent
Estimating the term…
Abstract
A readily adjustable flow rate control device having a movable flow control member which includes a plurality of spaced-apart flow restrictors which are adapted to be selectively positioned intermediate a fluid flow path extending between a fluid supply line and a fluid delivery line. The flow restrictors can take the form of porous rate control frits which can be selectively moved into index with the fluid flow path or microbores formed in a rotatable member which can be rotated to selectively move the microbores into index with the fluid flow path.
Claims19
A flow rate control device for controlling the rate of fluid flow between a fluid supply line connected to a source of fluid and a fluid delivery line, said flow rate control device comprising:
- (a) a housing having walls defining an internal chamber, said internal chamber having an inlet in communication with said fluid supply line, an outlet in communication with said fluid delivery line and a flow path between said inlet and said outlet;
- and
- (b) flow rate control means disposed within said housing between said inlet and said outlet for controlling the rate of fluid flow through said flow path, said flow rate control means comprising an assemblage rotatably connected to said housing, said assemblage including an annular shaped knob having a peripheral surface and a center wall disposed within said annular shaped knob, said center wall having a first and second circumferentially spaced apart flow restrictors, said assemblage being rotatable from a first position wherein said first flow restrictor is aligned with said inlet and a second position wherein said second flow restrictor is aligned with said inlet.
A flow rate control device for controlling the rate of fluid flow between a fluid supply line connected to a source of fluid and a fluid delivery line, said flow rate control device comprising:
- (a) a housing having walls defining an internal chamber, said internal chamber having an inlet in communication with said fluid supply line and an outlet in communication with said fluid delivery line;
- (b) flow rate control means disposed within said housing between said inlet and said outlet for controlling the rate of fluid flow from said inlet toward said outlet said flow rate control means comprising an assemblage rotatably connected to said housing, said assemblage including an annular shaped knob having a peripheral surface and a center wall disposed within said annular shaped knob, said center wall having a first and second circumferentially spaced apart flow restrictors, said control member being rotatable from a first position wherein said first flow restrictor is aligned with said inlet and a second position wherein said second flow restrictor is aligned with said inlet;
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- (c) locking means carried by said housing for releasably locking said annular shaped knob against rotation.
A flow rate control device for controlling the rate of fluid flow between a fluid supply line connected to a source of fluid and a fluid delivery line, said flow rate control device comprising:
- (a) a housing having walls defining an internal chamber, said internal chamber having an inlet in communication with said fluid supply line, an outlet in communication with said fluid delivery line and a flow path between said inlet and said outlet;
- and
- (b) flow rate control means disposed within said housing between said inlet and said outlet for controlling the rate of fluid flow through said flow path, said flow rate control means comprising an assemblage rotatably connected to said housing, said assemblage including a member having a peripheral surface and an interior wall connected to said member, said wall having a first and second spaced apart flow restrictors, said assemblage being rotatable from a first position wherein said first flow restrictor is aligned with said inlet and a second position wherein said second flow restrictor is aligned with said inlet.
Dependencies are inferred from the claim text.