US 4,375,882 AGranted

In-line flow control apparatus

OwnerLloyd J. Schreiber, Jr.inventor

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Abstract

In-line flow control apparatus for intravenous solutions includes a housing inserted in a conduit carrying liquids and includes a housing connected to the conduits with a valve disposed within the housing and a valve core disposed within the valve movable in response to rotation of a screw for controlling the flow of the liquid through the apparatus from one portion of the conduit to the adjacent portion of the conduit.

Claims4

Dependent claims

Valve apparatus for controlling the flow of intravenous fluids, comprising, in combination:

housing means, including a cylindrical portion having a bottom part;
inlet bore means connected to the bottom part of the housing means for providing a flow of fluid to the housing means;
outlet bore means connected to the bottom part of the housing means for providing a flow of fluid away from the housing means;
valve shell means disposed in the cylindrical portion of the housing means and having a portion movable in the housing means for controlling the flow of fluid through the housing means between the inlet bore means and the outlet bore means, including
a radially outwardly extending flange adapted to be secured to the housing means,
an outer cylindrical portion having a bottom portion secured to the flange and having a top portion,
an inner cylinder portion movable upwardly and downwardly in the housing means for controlling the flow of fluid,
a web connecting the inner cylinder portion to the top portion of the outer cylindrical portion,
a bore in the inner cylinder portion,
a pair of flanges spaced apart from each other in the bore and extending radially inwardly and defining an upper slot between them,
a concave bottom closing the inner cylinder portion,
a lower slot disposed between the concave bottom and the upper slot, and
a convex bottom secured to the inner cylinder portion and movable therewith vertically upwardly and downwardly and comprising the exterior of the concave bottom;
valve core means disposed in the bore and secured to, and movable with, the valve shell means, including
a first flange disposed in the upper slot of the valve shell means and a second flange disposed in the lower slot of the valve shell means for securing the valve core means and the valve shell means together,
a convex bottom disposed in the concave bottom of the valve shell means, and
a threaded bore;
cap means including
an outer cylinder wall having an upper portion and a lower portion,
an inner cylinder wall spaced apart from the lower portion of the outer cylinder wall and disposed on the radially outwardly extending flange of the valve shell means for securing the valve shell means to the housing means,
a circular bore defined between the lower portion of the outer cylinder wall and the inner cylinder wall for receiving the cylindrical portion of the housing means for securing the cap means to the housing means,
a central wall secured to the outer cylinder wall between the upper and lower portions and to the inner cylinder wall, and
an aperture extending through the central wall;
and
screw means rotatably secured to the valve core means for moving the valve core means and the valve shell means to control the flow of fluid through the housing means, including a head disposed on the central wall of the cap means and a threaded shank secured to the head and extending through the aperture in the central wall and into the threaded bore of the valve core.

22 more elements

Dependencies are inferred from the claim text.

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Abstract

Valve apparatus for controlling the flow of intravenous fluids, comprising, in combination:

housing means, including a cylindrical portion having a bottom part;
inlet bore means connected to the bottom part of the housing means for providing a flow of fluid to the housing means;
outlet bore means connected to the bottom part of the housing means for providing a flow of fluid away from the housing means;
valve shell means disposed in the cylindrical portion of the housing means and having a portion movable in the housing means for controlling the flow of fluid through the housing means between the inlet bore means and the outlet bore means, including
a radially outwardly extending flange adapted to be secured to the housing means,
an outer cylindrical portion having a bottom portion secured to the flange and having a top portion,
an inner cylinder portion movable upwardly and downwardly in the housing means for controlling the flow of fluid,
a web connecting the inner cylinder portion to the top portion of the outer cylindrical portion,
a bore in the inner cylinder portion,
a pair of flanges spaced apart from each other in the bore and extending radially inwardly and defining an upper slot between them,
a concave bottom closing the inner cylinder portion,
a lower slot disposed between the concave bottom and the upper slot, and
a convex bottom secured to the inner cylinder portion and movable therewith vertically upwardly and downwardly and comprising the exterior of the concave bottom;
valve core means disposed in the bore and secured to, and movable with, the valve shell means, including
a first flange disposed in the upper slot of the valve shell means and a second flange disposed in the lower slot of the valve shell means for securing the valve core means and the valve shell means together,
a convex bottom disposed in the concave bottom of the valve shell means, and
a threaded bore;
cap means including
an outer cylinder wall having an upper portion and a lower portion,
an inner cylinder wall spaced apart from the lower portion of the outer cylinder wall and disposed on the radially outwardly extending flange of the valve shell means for securing the valve shell means to the housing means,
a circular bore defined between the lower portion of the outer cylinder wall and the inner cylinder wall for receiving the cylindrical portion of the housing means for securing the cap means to the housing means,
a central wall secured to the outer cylinder wall between the upper and lower portions and to the inner cylinder wall, and
an aperture extending through the central wall;
and
screw means rotatably secured to the valve core means for moving the valve core means and the valve shell means to control the flow of fluid through the housing means, including a head disposed on the central wall of the cap means and a threaded shank secured to the head and extending through the aperture in the central wall and into the threaded bore of the valve core.

22 more elements