# US 2019/0170268 A1 · Valve comprising a variable flow opening

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- Number: US 2019/0170268 A1
- Document ID: US20190170268A1
- Status: Published application
- Kind: A1
- Application number: 16/233,184
- Filed: 2018-12-27
- Published: 2019-06-06
- Earliest claimed: 2014-01-09
- Inventors: Hans-Jörgen BEYER
- Web page: https://patentgrep.com/patent/US20190170268A1

## CPC

- F16K 31/084: {the magnet being used only as a holding element to maintain the valve in a specific position, e.g. check valves (F16K31/082, F16K31/086 take precedence)}
- F16K 31/086: {the magnet being movable and actuating a second magnet connected to the closing element}
- F16K 1/14: with ball-shaped valve member (check valves F16K15/04)
- F16K 31/08: using a permanent magnet
- 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)}

## Abstract

A method and apparatus for metering fluids, in particular liquid fluids, includes at least one fluid being guided out of at least one fluid reservoir through a closeable valve device in a discharge direction, at least one valve opening in the valve device being closed or opened by a valve closing member in order for the fluid to flow or be prevented from flowing through the valve opening, the opening and closing movement being performed magnetically by moving the valve closing member, which is arranged and moved in the fluid reservoir on an upstream side of the valve opening.

## Claims

### Claim 1

A metering pen for dispensing a medium having an adjusted flow rate onto a substrate, the metering pen comprising:
a hollow body containing the medium, the hollow body having a valve opening and a valve seat at an upstream side of the valve opening;
a metering pore at a downstream side of the valve opening configured to release the medium onto the substrate;
a movable body within the hollow body and arranged at an upstream side of the valve opening, the moveable body configured to close the valve opening and open the valve opening to control variably metered transfer of the medium through the valve opening and the metering pore and onto the substrate as a line or point onto the substrate, depending on a position of the movable body;
a plurality of magnets arranged outside the hollow body configured to change the position of the moveable body such that the moveable body moves into and out of engagement with the valve seat to cause the opening and closing of the valve opening,
wherein at least one magnet of the plurality of magnets is arranged at an upstream side of the valve seat and another magnet of the plurality of magnets is arranged at a downstream side of the valve seat.

### Claim 2 (depends on 1)

The metering pen of claim 1, wherein the medium is supplied to the hollow body via a replaceable cartridge.

### Claim 3 (depends on 1)

The metering pen of claim 1, wherein the hollow body includes a replaceable cartridge containing the medium and the movable body, the replaceable cartridge being insertable into the metering pen initially and subsequent to usage, and removable and disposable with the movable body therein.

### Claim 4 (depends on 3)

The metering pen of claim 3, wherein the replaceable cartridge is arranged between an opening of the metering pore and an opening to the replaceable cartridge.

### Claim 5 (depends on 4)

The metering pen of claim 4, wherein the replaceable cartridge has a non-magnetic hollow body and the moveable body therein comprises a magnetizable material.

### Claim 6 (depends on 4)

The metering pen of claim 4, further comprising a replaceable pressure cartridge which exerts pressure on the medium within the replaceable cartridge.

### Claim 7 (depends on 1)

The metering pen of claim 1, wherein the hollow body includes a pore to outside air for pressure equalization.

### Claim 8 (depends on 7)

The metering pen of claim 7, further comprising means for regulating entry of the outside air and pressure conditions in or against a direction of flow of the medium.

### Claim 9 (depends on 1)

The metering pen of claim 1, wherein the hollow body includes connections for the influx of media.

### Claim 10 (depends on 1)

The metering pen of claim 1, wherein the at least one magnet or another magnet is movable with respect to the movable body.

### Claim 11 (depends on 10)

The metering pen of claim 10, wherein the movement of the at least one magnet or another magnet with respect to the moveable body is automated via control by a controller.

### Claim 12 (depends on 10)

The metering pen of claim 10, wherein the at least one magnet or another magnet is motor driven.

### Claim 13 (depends on 10)

The metering pen of claim 10, wherein the metering pen further includes a lever to which the at least one magnet or another magnet is attached.

### Claim 14 (depends on 1)

The metering pen of claim 1, wherein the at least one magnet or another magnet is configured to have an adjustable field strength.

### Claim 15 (depends on 1)

The metering pen of claim 1, wherein the plurality of magnets include permanent magnets.

### Claim 16 (depends on 1)

The metering pen of claim 1, wherein the plurality of magnets include magnetizable materials.

### Claim 17 (depends on 1)

The metering pen of claim 1, wherein the hollow body is non-magnetic.

### Claim 18 (depends on 1)

The metering pen of claim 1, wherein the another magnet is a ring magnet disposed about the hollow body adjacent the valve seat.

### Claim 19 (depends on 1)

The metering pen of claim 1, wherein a position of the another magnet relative to the hollow body is adjustable via a rotatable member.

### Claim 20 (depends on 1)

The metering pen of claim 1, wherein the at least one magnet is coupled to a non-coiled spring and is movable in a direction towards the movable body by a slideable and/or rotatable member engageable with the non-coiled spring.