# US 9,354,092 B2 · In-line pressure-based flow meter

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- Number: US 9,354,092 B2
- Document ID: US9354092B2
- Status: Granted
- Kind: B2
- Application number: 13/829,022
- Filed: 2013-03-14
- Published: 2013-12-26
- Granted: 2016-05-31
- Earliest claimed: 2012-06-21
- Assignees: Flometrix
- Applicants: Flometrix
- Inventors: Yuh-Yuan Shyy; Manjit Misra
- Web page: https://patentgrep.com/patent/US9354092B2

## CPC

- G01F 1/34: by measuring pressure or differential pressure
- G01F 1/28: by drag-force, e.g. vane type or impact flowmeter
- G01F 1/30: for fluent solid material
- G01G 11/04: having electrical weight-sensitive devices
- G01G 11/16: being electrical or electronic means
- G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01G: WEIGHING (sorting by weighing B07C5/16)

## Abstract

The Application discloses an in-line, high capacity apparatus and method for measuring a flowable component, such as seed, grain or other material. The apparatus and method generally function by measuring the pressure applied to a rounded cap by the flowing material. In certain embodiments, the apparatus and method comprise a housing containing a sensing unit, with the housing further comprising a rounded cap in mechanical communication with a load cell. In certain exemplary embodiments, the apparatus and method also comprise a processor, wherein the sensing unit is in communication with the processor so as to measure the flow rate of material passed through the housing by measuring the pressure of the material on the rounded cap. In certain embodiments, the apparatus and method allow the user to regulate the flow rate.

## Claims

### Claim 1

An apparatus for measuring the flow rate of a flowable material, comprising:
a. a housing, further comprising:
i. an inlet for receiving material; and
ii. an outlet for exiting material;
b. a sensing unit disposed within the housing and further comprising:
i. a rounded cap;
ii. a load cell;
iii. a top plate; and
iv. a bottom plate; and
c. a processor;
d. a vertical gap defined between the inlet and rounded cap and comprising an overall distance; and
e. an adjustment mechanism;
wherein the adjustment mechanism is configured to adjust the overall distance of the vertical gap defined between the rounded cap and the inlet to adjust the flow rate and allow for creation of layers of material over the rounded cap such that only a portion of the flowable material directly contacts the rounded cap without restricting material flow;
wherein the top plate and bottom plate are operationally integrated with the load cell and configured to allow for the measurement of the pressure applied to the rounded cap by way of displacement of the rounded cap relative to the bottom plate; and
further wherein the sensing unit is in electronic communication with the processor so as to measure the flow of material passed through the housing by measuring pressure of the material on the rounded cap by way of displacement of the rounded cap.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the sensing unit further comprises a movable top plate and a stationary bottom plate, such that the top plate moves relative to the bottom plate, thereby applying pressure to the load cell.

### Claim 3 (depends on 2)

The apparatus of claim 2, further comprising a spacer.

### Claim 4 (depends on 3)

The apparatus of claim 3, further comprising a stopper.

### Claim 5

A method for measuring the flow of a flowable material, comprising:
a. providing flowable material;
b. providing a flow meter, said flow meter further comprising:
i. a housing further comprising an inlet for receiving material and an outlet for exiting material;
ii. sensing unit within the housing and further comprising:
A. a rounded cap; and
B. a load cell;
iii. an adjustment mechanism;
iv. a vertical gap defined between the inlet and rounded cap and comprising an overall distance;
wherein the adjustment mechanism is configured to adjust the overall distance of the vertical gap defined between the rounded cap and the inlet to adjust the flow rate and allow for creation of layers of materials over the rounded cap such that only a portion of the flowable material directly contacts the rounded cap without restricting material flow;
c. providing a processor; and
d. establishing the weight of material flow through the flow meter by measuring pressure applied by the material to the rounded cap by way of the load cell, said load cell being in electronic communication with the processor so as to measure the flow.

### Claim 6 (depends on 5)

The method as provided in claim 5, wherein the flow meter further comprises a movable top plate and a stationary bottom plate, such that the top plate moves relative to the bottom plate, thereby applying pressure to the load cell.

### Claim 7 (depends on 5)

The method as provided in claim 5, wherein the flow meter further comprises a spacer.

### Claim 8 (depends on 5)

The method as provided in claim 5, wherein the flow meter further comprises a stopper.

### Claim 9 (depends on 1)

The apparatus of claim 1, wherein pressure is translated into a readable signal by way of the load cell for transmittal to the processor.

### Claim 10 (depends on 1)

The apparatus of claim 1, further comprising a flow readout.

### Claim 11 (depends on 1)

The apparatus of claim 1, wherein the adjustment mechanism is operated by the processor, so as to adjust flow rate and material handling.