IP Library Granted Patent US 7,266,994
Granted Patent B1
US 7,266,994 · App. 10/960,475 · Granted Sep 11, 2007

Measuring particulate in liquid storage tanks

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Quick Facts
Patent No.
US 7,266,994
App. No.
10/960,475
Granted
Sep 11, 2007
Kind
B1
Abstract

This device provides for measuring the particulate content in a fluid storage tank. A sample of fluid is taken from a fluid storage tank; and compared to a field visual reference chart. Using this chart results in identifying tanks containing a maximum or average particulate allowable.

Claims (28)

1. A visual apparatus for measuring particulate content in a gasoline or diesel fuel storage tank using a field visual reference comprising:

a sample of gasoline or diesel fuel taken from a gasoline or diesel fuel storage tank;

a photograph image of a first sample consisting of only gasoline or diesel fuel;

a photograph image of a second sample of gasoline or diesel fuel containing a maximum allowable particulate for consumer sales; and

a multiplicity of photograph images of samples of gasoline or diesel fuel, each sample of the multiplicity containing a different, measured amount of particulate, wherein the particulate has settled to the bottom of the sample.

2. An apparatus according to claim 1 wherein the particulate is rust.

3. An apparatus according to claim 1 wherein the particulate is solid material.

4. An apparatus according to claim 1 wherein one of the photograph images represents a sample containing 50 mg of the particulate per liter of gasoline or diesel fuel.

5. An apparatus according to claim 1 wherein one of the photograph images represents a sample showing a maximum particulate allowable for a distribution system.

6. An apparatus according to claim 1 wherein one of the photograph images represents a sample showing a maximum particulate allowable for an underground storage tank.

7. An apparatus according to claim 1 wherein the storage tank is an underground tank.

8. An apparatus according to claim 1 wherein the storage tank is a steel tank.

9. An apparatus according to claim 1 wherein the photograph images are digital photographs.

10. A visual method for measuring particulate content in a gasoline or diesel fuel storage tank using a field visual reference comprising the steps of:

providing a sample of gasoline or diesel fuel taken from a gasoline or diesel fuel storage tank;

providing a photograph image of a first sample consisting of only gasoline or diesel fuel;

providing a photograph image of a second sample of gasoline or diesel fuel containing a maximum allowable particulate for consumer sales;

a multiplicity of photograph images of sample gasoline or diesel fuel, each sample of the multiplicity containing a different, measured amount of particulate;

settling the particulate to the bottom of the sample;

visually comparing the sample of gasoline or diesel fuel from the storage tank to photograph images; and

making a decision on the quality of the gasoline or diesel fuel in the storage tank based on the visually comparing.

11. A method according to claim 10 including the step of providing one image of a container containing 50 mg of the particulate per liter of the fluid.

12. A method according to claim 10 including the step of providing one image of a sample containing a maximum particulate allowable for a distribution system.

13. A method according to claim 10 including the step of providing one image of a sample containing a maximum particulate allowable for an underground storage tank.

14. A method according to claim 10 wherein the storage tank is an underground tank.

15. A method according to claim 10 wherein the storage tank is a steel tank.

16. A method according to claim 10 wherein the particulate is rust.

17. A method according to claim 10 wherein the particulate is solid material.

Assignments (3)
CONVERSION Recorded Dec 7, 2010
From: MARATHON PETROLEUM COMPANY LLC
To: MARATHON PETROLEUM COMPANY LP
Reel/Frame 025445/0896 →
CHANGE OF NAME Recorded Sep 15, 2005
From: MARATHON ASHLAND PETROLEUM LLC
To: MARATHON PETROLEUM COMPANY LLC
Reel/Frame 016541/0201 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 6, 2004
From: SPERO, DANIEL; SHERIDAN, JAMES
To: MARATHON ASHLAND PETROLEUM LLC
Reel/Frame 015880/0942 →