US4679595A — Device for controlling the flow in a pipe system

Claim 1

Independent Claim 189 words

A device for controlling the flow of a liquid in a pipe system, comprising: a housing having a curved side wall to form a vortex chamber therein, said housing having an inlet opening and an outlet opening oriented to allow free, unobstructed and substantially linear flow of said liquid through said housing from said inlet opening to said outlet opening in the absence of an angular velocity component in an inflowing liquid toward the housing side wall, an adjustable guide vane mounted within said housing and adjacent said inlet opening, said guide vane being movable between the first position in which it is positioned substantially away from said inlet opening so as to impart no angular velocity component to the inflowing liquid toward such side wall, and operative positions in which it extends at least partially across said inlet opening to give said inflowing liquid controlled amounts of a velocity component having a direction which forms an angle with the direction of the inflowing liquid to move said inflowing liquid to said side wall to create a vortex flow of liquid in said chamber which creates a braking effect.

Claim 2

Independent Claim 189 words

A device for controlling the flow of a liquid in a pipe system, comprising: a housing having a curved side wall to form a vortex chamber therein, said housing having an inlet opening and an outlet opening oriented to allow free, unobstructed and substantially linear flow of said liquid through said housing from said inlet opening to said outlet opening in the absence of an angular velocity component in an inflowing liquid toward the housing side wall, an adjustable guide vane mounted within said housing and adjacent said inlet opening, said guide vane being movable between the first position in which it is positioned substantially away from said inlet opening so as to impart no angular velocity component to the inflowing liquid toward such side wall, and operative positions in which it extends at least partially across said inlet opening to give said inflowing liquid controlled amounts of a velocity component having a direction which forms an angle with the direction of the inflowing liquid to move said inflowing liquid to said side wall to create a vortex flow of liquid in said chamber which creates a braking effect.

Claim 3

Dependent Claim 73 words

A device according to claim 1 wherein said housing side wall has the shape of a frustum of a cone with the outlet opening, connected to an outlet spout, in the narrow end of said frustum, and wherein said inlet opening, connected to an inlet spout, is disposed in a lower part of the wide end face so that said inlet spout and outlet spout are substantially horizontal and co-axial with each other.

Claim 4

Dependent Claim 36 words

A device according to claim 2, wherein said inlet spout at said inlet opening of said housing is formed with a lateral extension defined by a curved wall which is substantially parallel with said guide vane.

Claim 5

Dependent Claim 74 words

A device according to claim 2 wherein said inlet opening is substantially circular, and wherein said guide vane is curved and arranged along an edge portion of a planar supporting plate which is pivotally placed on the inner side of and in close relationship with said wide end face, said edge portion substantially conforming with and being positioned along a part of the inlet opening circumference in one operative position of said guide vane.

Claim 6

Dependent Claim 66 words

A device according to claim 4 wherein said wide end face is circular and perpendicular to the axis of said frustoconcical housing, and wherein said guide vane supporting plate is substantially sector-shaped and is rotatable about the axis of said housing and has a size at the wide end face circumference sufficient to cover said inlet opening completely in an operative position of said guide vane.

Claim 7

Dependent Claim 26 words

A device according to claim 3, comprising: an inclined plate extending obliquely from a part of said guide vane inwardly toward said guide vane supporting plate.

Claim 8

Dependent Claim 40 words

A device according to claim 4, wherein said guide vane supporting plate is firmly connected to a lever which is mounted on the exterior of said housing and is movable across a scale to rotate said guide vane supporting plate.

Claim 9

Dependent Claim 16 words

A device according to claim 7, wherein said lever is hollow and forms a vent pipe.

Claim 10

Independent Claim 196 words

A device for controlling the flow of a liquid in a pipe system, comprising: a housing substantially in the shape of a flat cylinder having end walls with an outer opening in one end wall and an inlet opening in the cylindrical housing wall, an inlet spout connected to said inlet opening to normally direct the flow of liquid into said housing substantially radially to the center of said cylindrical housing, a guide vane mounted in said inlet spout, means for moving said guide vane between a first position in which it is positioned substantially away from said inlet opening to allow free, unobstructed and substantially linear flow of an inflowing liquid substantially radially into the housing, and operative positions in which it extends at least partially and obliquely across said inlet opening to direct said inflowing liquid away from said radial direction to impart to it a controlled velocity component having a direction which forms an angle with the radial direction of inflow from said inlet opening so as to direct the inflowing liquid to the cylindrical wall to give a braking effect to the liquid as it travels from the inlet to the outlet.

Claim 11

Independent Claim 196 words

A device for controlling the flow of a liquid in a pipe system, comprising: a housing substantially in the shape of a flat cylinder having end walls with an outer opening in one end wall and an inlet opening in the cylindrical housing wall, an inlet spout connected to said inlet opening to normally direct the flow of liquid into said housing substantially radially to the center of said cylindrical housing, a guide vane mounted in said inlet spout, means for moving said guide vane between a first position in which it is positioned substantially away from said inlet opening to allow free, unobstructed and substantially linear flow of an inflowing liquid substantially radially into the housing, and operative positions in which it extends at least partially and obliquely across said inlet opening to direct said inflowing liquid away from said radial direction to impart to it a controlled velocity component having a direction which forms an angle with the radial direction of inflow from said inlet opening so as to direct the inflowing liquid to the cylindrical wall to give a braking effect to the liquid as it travels from the inlet to the outlet.

Claim 12

Dependent Claim 78 words

A device according to claim 9 wherein said inlet opening and corresponding cross-section of said inlet spout are rectangular, and wherein said guide vane is in the shape of a cylinder segment having a plane side in said first position disposed in parallel with an opposite side wall of said inlet spout and defines, in combination with said side wall and two walls of said inlet spout perpendicular thereto, a cross-section corresponding to that of said inlet opening.

Claim 13

Dependent Claim 34 words

A device according to claim 9, wherein said guide vane, through its pivot, is firmly connected to a lever which is mounted on the exterior of said housing and is movable across a scale.

Claim 14

Dependent Claim 32 words

A device according to claim 9 wherein said radial inlet spout has a curved side wall along which an outer edge of said guide vane moves upon rotation of said guide vane.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1990-07-13	1991-01-12	1991-07-14	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1994-07-13	1995-01-12	1995-07-14	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1998-07-13	1999-01-12	1999-07-14	$7700.00	Window Closed / Lapsed

Device for controlling the flow in a pipe system

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