US3583209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for measuring mass of a material
Assignee: Automation Products Inc
•
Filing: 1969-02-27
•
Granted: 1971-06-08
•
Expires: 1989-02-27
Abstract
Abstract A method of and apparatus for measuring the mass of a material in a fluid by use of a vibratory U-shaped hollow body, and more particularly measuring the total mass of a material in a fluid and measuring the amount of different sized material particles. Supporting the legs of a U-shaped body adjacent the node points of its resonant frequency and flowing a fluid containing the material to be measured through the body, vibrating the body and measuring the vibration of the body while the fluid is flowing through the body whereby the vibration of the body is a measure of the mass of the material in the fluid, stopping the fluid flow through the body and allowing the material to be separate from the fluid and accumulate in the U-shaped end, and measuring the vibration body while the material separates which measurement is the measure of the particle distribution of the material. Measuring the vibration after the material has separated from the fluid which provides a measurement of the total mass of the material in the fluid. A hollow U-shaped sensing element vertically positioned supported about its legs, electromagnetic vibration drive means and vibration measuring means connected to the sensing element at a position spaced from the support means and adjacent the node point of the sensing element in which the mass of the support means is greater than the sensing element and the electromagnetic drive and measuring means and containers connected to each leg of the body and having tapered connections to the legs.
Inventors
- 👤 William B Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:54
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/002; G01N2009/006
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
112 words
The method of measuring the mass of a material suspended in a fluid comprising, placing a U-shaped vibratory hollow body in a substantially vertical position, supporting the body by the legs adjacent the node points of the natural resonant frequency of the body; placing the fluid containing the material to be measured in the body, allowing the material to be measured to separate from the fluid and accumulate in the U-shaped end of the hollow body, vibrating the body and the contents therein, measuring the vibration of the body after the material has separated whereby the vibration of the body is a measure of the mass of the material in the fluid.
Claim 2
Independent Claim
112 words
The method of measuring the mass of a material suspended in a fluid comprising, placing a U-shaped vibratory hollow body in a substantially vertical position, supporting the body by the legs adjacent the node points of the natural resonant frequency of the body; placing the fluid containing the material to be measured in the body, allowing the material to be measured to separate from the fluid and accumulate in the U-shaped end of the hollow body, vibrating the body and the contents therein, measuring the vibration of the body after the material has separated whereby the vibration of the body is a measure of the mass of the material in the fluid.
Claim 3
Dependent Claim
51 words
The method of claim 1 including the steps of placing the fluid containing the material in the body by flowing the fluid through the U-shaped body, and periodically allowing the material to accumulate in the U-shaped end of the hollow body by periodically stopping the flow of fluid through the body.
Claim 4
Dependent Claim
27 words
The method of claim 1 including the step of subjecting the material to be measured to a chemical action and precipitating the material out of the fluid.
Claim 5
Independent Claim
122 words
The method of measuring the mass of a material in a fluid comprising, placing a U-shaped vibratory hollow body in a substantially vertical position, supporting the body by the legs adjacent the node points of the natural resonant frequency of the body, placing the fluid containing the material to be measured in the body, allowing the material to be measured to separate from the fluid by gravity and accumulate in the U-shaped end of the hollow body, vibrating the body while separation of the material from the fluid is occuring, measuring the vibration of the body while the separation is occuring whereby the rate of change of vibration of the body is a measure of the particle size distribution of the material.
Claim 6
Independent Claim
122 words
The method of measuring the mass of a material in a fluid comprising, placing a U-shaped vibratory hollow body in a substantially vertical position, supporting the body by the legs adjacent the node points of the natural resonant frequency of the body, placing the fluid containing the material to be measured in the body, allowing the material to be measured to separate from the fluid by gravity and accumulate in the U-shaped end of the hollow body, vibrating the body while separation of the material from the fluid is occuring, measuring the vibration of the body while the separation is occuring whereby the rate of change of vibration of the body is a measure of the particle size distribution of the material.
Claim 7
Dependent Claim
46 words
The method of claim 4, including the steps of placing the fluid containing the material in the body by flowing the fluid through the U-shaped body, and periodically measuring the particle size distribution of the material by periodically stopping the flow of fluid through the body.
Claim 8
Dependent Claim
35 words
The method of claim 4 including, measuring the vibration of the body after the material has separated whereby the vibration of the body is a measure of the mass of the material in the fluid.
Claim 9
Dependent Claim
30 words
The method of claim 4 wherein the material to be measured is heavier than the fluid and the body is placed in position with the U-shaped end at the bottom.
Claim 10
Independent Claim
128 words
An apparatus for measuring the mass of a material comprising, a hollow U-tube sensing element vertically positioned, support means for suppoRting said element about its legs, electromagnetic vibration drive means including first and second members, the first of which is connected to the sensing element for vibrating said sensing element, electromagnetic vibration measuring means including first and second members, the first of which is connected to said sensing element for measuring the vibration of said sensing element, said vibration drive means second member and said vibration measuring means second member being secured to and supported from the support means and adjacent a node point of the sensing element, the mass of the support means being greater than the mass of said sensing element, drive means and measuring means.
Claim 11
Independent Claim
128 words
An apparatus for measuring the mass of a material comprising, a hollow U-tube sensing element vertically positioned, support means for suppoRting said element about its legs, electromagnetic vibration drive means including first and second members, the first of which is connected to the sensing element for vibrating said sensing element, electromagnetic vibration measuring means including first and second members, the first of which is connected to said sensing element for measuring the vibration of said sensing element, said vibration drive means second member and said vibration measuring means second member being secured to and supported from the support means and adjacent a node point of the sensing element, the mass of the support means being greater than the mass of said sensing element, drive means and measuring means.
Claim 12
Dependent Claim
26 words
The apparatus of claim 8 including, an enlarged container connected to each of the legs of said body and having a tapered connection to the legs.
Claim 13
Dependent Claim
17 words
The apparatus of claim 8 wherein the U-shaped end is positioned below the legs of the body.
Claim 14
Independent Claim
155 words
An apparatus for measuring the mass of a material comprising, a hollow U-tube sensing element vertically positioned, support means for supporting said element about its legs, electromagnetic vibration drive means including first and second members, the first of which is connected to the sensing element for vibrating said sensing element, electromagnetic vibration measuring means including first and second members, the first of which is connected to said sensing element for measuring the vibration of said sensing element, said vibration drive means second member and said vibration measuring means second member being secured to and supported from the sensing element at a position spaced from the support means and adjacent a node point of the sensing element, and the natural resonant frequency of the U-tube sensing element about the support means being lower than the natural resonant frequency of the U-tube about said node point thereby reducing the transmissibility of vibration signals through the sensing element.
Claim 15
Independent Claim
155 words
An apparatus for measuring the mass of a material comprising, a hollow U-tube sensing element vertically positioned, support means for supporting said element about its legs, electromagnetic vibration drive means including first and second members, the first of which is connected to the sensing element for vibrating said sensing element, electromagnetic vibration measuring means including first and second members, the first of which is connected to said sensing element for measuring the vibration of said sensing element, said vibration drive means second member and said vibration measuring means second member being secured to and supported from the sensing element at a position spaced from the support means and adjacent a node point of the sensing element, and the natural resonant frequency of the U-tube sensing element about the support means being lower than the natural resonant frequency of the U-tube about said node point thereby reducing the transmissibility of vibration signals through the sensing element.
Claim 16
Dependent Claim
29 words
The apparatus of claim 11 wherein said vibration drive means first member and said vibration measuring means first member are connected to the sensing element adjacent the U-shaped end.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |