Andrew T Patterson

US Patent:

6993437, Jan 31, 2006

Filed:

Mar 2, 2004

Appl. No.:

10/790874

Inventors:

David B. Chadwick - San Diego CA, US
Gregory Jon Groves - San Diego CA, US
Andrew E. Patterson - Lakeside CA, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01F 1/00

US Classification:

702 45, 73861

Abstract:

A method and apparatus for tidal seepage meters. The meter includes a power supply, controller, motor, selector valve, seepage chamber and at least two sample containers. The controller is operatively coupled to the power supply and is capable of controlling the power supply in accordance with a sampling schedule. The motor is operatively coupled to the power supply and is capable of receiving power from the power supply in accordance with the sampling schedule. The selector valve includes an input port and at least two outlet ports and is operatively coupled to the motor. The selector valve is capable of selecting an output valve in accordance with the sampling schedule. The seepage chamber is operatively coupled to the selector valve, capable of receiving seepage and inputting seepage to the selector valve via the input port. The sample containers are operatively coupled to the selector valve and receive seepage.

US Patent:

7424375, Sep 9, 2008

Filed:

Nov 3, 2005

Appl. No.:

11/266523

Inventors:

David B. Chadwick - San Diego CA, US
Andrew E. Patterson - San Diego CA, US
Gregory J. Groves - San Diego CA, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01F 17/00

US Classification:

702 45

Abstract:

A method and apparatus for tidal seepage meters. The meter includes a power supply, controller, motor, selector valve, seepage chamber and at least two sample containers. The controller is operatively coupled to the power supply and is capable of controlling the power supply in accordance with a sampling schedule. The motor is operatively coupled to the power supply and is capable of receiving power from the power supply in accordance with the sampling schedule. The selector valve includes an input port and at least two outlet ports and is operatively coupled to the motor. The selector valve is capable of selecting an output valve in accordance with the sampling schedule. The seepage chamber is operatively coupled to the selector valve, capable of receiving seepage and inputting seepage to the selector valve via the input port. The sample containers are operatively coupled to the selector valve and receive seepage.

US Patent:

7672795, Mar 2, 2010

Filed:

Jan 7, 2008

Appl. No.:

11/970066

Inventors:

David B. Chadwick - San Diego CA, US
Andrew Patterson - Lakeside CA, US
Gregory J. Groves - San Diego CA, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01F 1/00

US Classification:

702 45

Abstract:

A method includes the steps of providing a tidal seepage meter having a power supply, a controller capable of controlling the power supply according to a sampling schedule, a motor capable of receiving power from the power supply according to the sampling schedule, a selector valve having an input port and at least two outlet ports and capable of selecting an output valve according to the sampling schedule, a seepage chamber capable of receiving seepage and inputting seepage to the selector valve via the input port, and a first sample container and a second sample container capable of receiving seepage from the selector valve via the output valve, transferring the sampling schedule to the tidal seepage meter, positioning the tidal seepage meter in sediment; and sampling seepage according to the sampling schedule. The sampled seepage water may then be analyzed and the results may be displayed to a user.

US Patent:

61307432, Oct 10, 2000

Filed:

Jun 28, 1999

Appl. No.:

9/340377

Inventors:

Hugh D. Copeland - Chula Vista CA
Gary F. Mastny - San Diego CA
Andrew E. Patterson - San Diego CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01N 3348

US Classification:

356 39

Abstract:

A colorimetric red blood cell sensor provides an automatic system for deting and preventing the further mixing of red blood cells and plasma. The sensor includes a processor that controls blue and red light sources so that they collectively generate pulsed blue and red light signals that are directed through blood serum held in an optically transparent container. The red and blue signals are 180 degrees out of phase, and hence staggered, with respect to each other. A photodetector system detects the pulsed red and blue light signals and generates output signals representing the intensities of the staggered signals received by the photodetector system. A microprocessor determines the ratio of the intensities of the red and blue light signals detected by the photodetector system. If the ratio exceeds a limit, the microprocessor generates a fluid control signal that prevents further mixing of red blood cells and plasma.

US Patent:

6190919, Feb 20, 2001

Filed:

Apr 21, 1999

Appl. No.:

9/295875

Inventors:

Gary F. Mastny - San Diego CA
Hugh D. Copeland - Chula Vista CA
Andrew E. Patterson - San Diego CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01N 3348

US Classification:

436 63

Abstract:

A system for controlling the deglycerolization of red blood cells includes a cell sorter having multiple fluid channels each having a unique cross-sectional area for directing a fluid mixture consisting essentially of a saline solution and a plasma solution having glycerized red blood cell products through one or more of the fluid channels based on the sizes of the red blood cell products. An optical energy source illuminates the fluid mixture in the cell sorter, whereupon an optical detector generates a data signal in response to receiving light signals that propagate through the fluid mixture. A processor generates a control signal in response to receiving the data signal that is used by a servo-controlled device to control the ratio of the saline and plasma solutions in the fluid mixture so that the red blood cell products substantially flow only through one or more of the fluid channels having particular cross-sectional areas.