# US 6,082,405 A · Valve cone, a valve and a valve manufacturing process

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- Number: US 6,082,405 A
- Document ID: US6082405A
- Status: Granted
- Kind: A
- Application number: 09/224,714
- Filed: 1998-12-31
- Granted: 2000-07-04
- Earliest claimed: 1996-07-09
- Assignees: Tac, LLC
- Inventors: Patrik Qvarfordh; Jonas Wall; Nils Hjelte; Goran Dahl; Christer Hernrup
- Web page: https://patentgrep.com/patent/US6082405A

## CPC

- F16K 1/54: Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
- F16K 47/04: for decreasing pressure {or noise level}, the throttle being incorporated in the closure member
- Y10T 137/86759: Reciprocating
- Y10T 137/86791: Piston
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A valve cone comprises a cylindrical body extending along a longitudinal axis. The body has a cylindrical surface with at least one, axially extending recess. The recess extends inside a contour line between a first end position at a first end of the cylindrical body and a second end position, which is located between the first end of the body and the opposite second end of the body. The cross-sectional area of the recess, in a plane perpendicular to its longitudinal axis, gradually decreases from a maximum value close to the said first end towards the second end position. A valve cone of the type described above is arranged in a valve. In a method for manufacturing the valve cone, the radial recesses are formed by cutting in a single axial-radial cutting motion.

## Claims

### Claim 1

A valve cone comprising a cylindrical body extending along a longitudinal axis and having a cylindrical surface and at least one, axially extending recess which, inside a contour line, extends between a first end position at a first end of the cylindrical body and a second end position between the first end of the body and the opposite second end of the body, the recess having a radial depth and a width, the recess having a cross-section, in a plane perpendicular to the longitudinal axis, the area of which gradually decreases from a maximum value close to said first end towards the second end position, and the body in said cross-section perpendicular to the longitudinal axis having a boundary line which is continuously concave towards the recess, characterized in that the portion of the recess which extend from the second end position has a width greater than its depth and, the recess has a longitudinal section, in a plane along the longitudinal axis, in which the boundary line of the body towards the recess has an essentially continuous convex bend.

### Claim 2 (depends on 1)

A valve cone as claimed in claim 1, which has 2-5 axially extending recesses.

### Claim 3 (depends on 2)

A valve cone as claimed in claim 2, which has four recesses.

### Claim 4 (depends on 1)

A valve cone as claimed in claim 1, wherein said continuously concave boundary line of the body is concave in a rounded fashion towards the recess.

### Claim 5 (depends on 4)

A valve cone as claimed in claim 4, wherein said concave boundary line constitutes part of the periphery of a circle having the radius R2.

### Claim 6 (depends on 5)

A valve cone as claimed in claim 5, wherein the cylindrical body has a radius R1, the radius R2 being the range of 0.25 R1-0.75 R1.

### Claim 7 (depends on 1)

A valve cone as claimed in claim 1, wherein said portion having a width greater than its depth comprises the axial extent of at least half the recess.

### Claim 8 (depends on 1)

A valve cone as claimed in claim 1, wherein an annular abutment is located in the second end of the cylindrical body.

### Claim 9 (depends on 1)

A valve cone as claimed in claim 1, wherein an actuator projects from the first end.

### Claim 10 (depends on 1)

A valve cone as claimed in claim 1, wherein the recess at the first end of the cylindrical body is circumferentially surrounded by portions having a radial extent.

### Claim 11 (depends on 1)

A valve cone as claimed in claim 1, wherein the contour line of the recess is outwardly convex.

### Claim 12 (depends on 1)

A valve comprising a valve cone coacting with a valve seat, characterised in that the valve comprises a valve cone according to claim 1.

### Claim 13 (depends on 12)

A valve as claimed in claim 12, wherein radial controlling of the valve cone is accomplished by coaction between the cylindrical surface of the valve cone and a surface associated with the valve seat and facing the longitudinal axis of the valve cone.

### Claim 14 (depends on 5)

A valve cone as claimed in claim 5, wherein the cylindrical body has a radius R1, the radius R2 being a range of 0.5 R1-0.64 R1.