William Scott Mcdowell

US Patent:

7001153, Feb 21, 2006

Filed:

Jun 30, 2003

Appl. No.:

10/610364

Inventors:

William M. McDowell - Garden Grove CA, US
John T. Nguyen - San Dimas CA, US

Assignee:

Blue-White Industries - Huntington Beach CA

International Classification:

F04B 53/04
F04B 43/12

US Classification:

417 63, 4174771

Abstract:

A pump leak monitor for use with a peristaltic pump comprises a pump housing and a pair of electrical contacts disposed along a bottom end of the pump housing. The electrical contacts are located such that the contacts are immersed in fluid when the pump is leaking. The fluid conducts electricity across the contacts and thereby closes an electrical circuit for providing an indication that a leak has been detected. By measuring an electrical parameter in the circuit, the pump leak monitor is capable of measuring the conductivity of the fluid in the pump housing. As a result, the pump leak monitor is capable of differentiating between different types of fluid.

US Patent:

7284964, Oct 23, 2007

Filed:

Feb 21, 2006

Appl. No.:

11/358277

Inventors:

William M. McDowell - Garden Grove CA, US
John T. Nguyen - San Dimas CA, US

Assignee:

Blue-White Industries - Huntington Beach CA

International Classification:

F04B 53/04
F04B 43/12

US Classification:

417 63, 4174771

Abstract:

A pump leak monitor for use with a peristaltic pump comprises a pump housing and a pair of electrical contacts disposed along a bottom end of the pump housing. The electrical contacts are located such that the contacts are immersed in fluid when the pump is leaking. The fluid conducts electricity across the contacts and thereby closes an electrical circuit for providing an indication that a leak has been detected. By measuring an electrical parameter in the circuit, the pump leak monitor is capable of measuring the conductivity of the fluid in the pump housing. As a result, the pump leak monitor is capable of differentiating between different types of fluid.

US Patent:

8215931, Jul 10, 2012

Filed:

Mar 9, 2009

Appl. No.:

12/400639

Inventors:

William M. McDowell - Garden Grove CA, US
John Nguyen - Yorba Linda CA, US
Robert E Gledhill - Huntington Beach CA, US

Assignee:

Blue-White Industries, Ltd. - Huntington Beach CA

International Classification:

F04B 43/08

US Classification:

4174771, 417 33

Abstract:

A peristaltic pump is provided that is configured to facilitate safe maintenance of the pump. The pump can comprise a pump body having a pump head and a head cover and a safety switch mechanism. The safety switch mechanism can comprise one or more sensors that allow the pump to detect whether the head cover is in an open or closed position. When the pump is powered-on, the pump can be configured to enter a maintenance mode when the safety switch detects that the head cover is in the open position.

US Patent:

8418364, Apr 16, 2013

Filed:

Mar 9, 2009

Appl. No.:

12/400637

Inventors:

William M. McDowell - Garden Grove CA, US
John Nguyen - Yorba Linda CA, US
Robert E. Gledhill - Huntington Beach CA, US

Assignee:

Blue-White Industries, Ltd. - Huntington Beach CA

International Classification:

B23P 6/00

US Classification:

29888021, 29888022, 4174771

Abstract:

A method is provided for extending useful life of tubing of a peristaltic pump. The method can comprise switching inlet and discharge hoses between respective inlet and outlet ends of the tubing of the peristaltic pump, and reversing a direction of rotation of a rotor of the peristaltic pump. In implementations of methods disclosed herein, the useful life of the tubing of a peristaltic pump can be approximately doubled.

US Patent:

42773083, Jul 7, 1981

Filed:

Jun 23, 1978

Appl. No.:

5/918259

Inventors:

Gordon K. Rusch - Downers Grove IL
Donald J. Keefe - Lemont IL
William P. McDowell - Downers Grove IL

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G21C 1700
G01T 300

US Classification:

176 19EC

Abstract:

There is provided a nuclear reactor count-factor-increase time monitoring circuit which includes a pulse-type neutron detector, and means for counting the number of detected pulses during specific time periods. Counts are compared and the comparison is utilized to develop a reactor scram signal, if necessary.

US Patent:

39420140, Mar 2, 1976

Filed:

Mar 20, 1975

Appl. No.:

5/560429

Inventors:

William P. McDowell - Downers Grove IL
James P. Bobis - Downers Grove IL

Assignee:

The United States of America as represented by the United States Energy
Research and Development Administration - Washington DC

International Classification:

G01T 300
G01T 118

US Classification:

250392

Abstract:

Logic elements are provided for a reactor period meter trip circuit. For one element, first and second inputs are applied to first and second chopper comparators, respectively. The output of each comparator is O if the input applied to it is greater than or equal to a trip level associated with each input and each output is a square wave of frequency f if the input applied to it is less than the associated trip level. The outputs of the comparators are algebraically summed and applied to a bandpass filter tuned to f. For another element, the output of each comparator is applied to a bandpass filter which is tuned to f to give a sine wave of frequency f. The outputs of the filters are multiplied by an analog multiplier whose output is 0 if either input is 0 and a sine wave of frequency 2f if both inputs are a frequency f.

US Patent:

20220276082, Sep 1, 2022

Filed:

Oct 18, 2021

Appl. No.:

17/451213

Inventors:

- Huntington Beach CA, US
John Nguyen - Fountain Valley CA, US
Patrick M. Murphy - Irvine CA, US
William M. McDowell - Garden Grove CA, US

International Classification:

G01F 1/66

Abstract:

A flow rate assembly can include a housing having a measurement channel extending along the housing axis and through a portion of the housing between the first and second ends of the housing, an outer cup portion positioned at least partly within the housing, and a transducer positioned within the outer cup portion and sealed from fluid flow past the outer cup portion, the transducer having a width perpendicular to the housing axis and greater than the width of the measurement channel, the transducer configured to generate an ultrasonic signal and to direct the ultrasonic signal through the measurement channel.

US Patent:

20190101936, Apr 4, 2019

Filed:

Jun 8, 2018

Appl. No.:

16/003796

Inventors:

- Huntington Beach CA, US
John T. Nguyen - Fountain Valley CA, US
Patrick Michael Murphy - Irvine CA, US
Keith R. Petros - Orange CA, US
Jennifer A. Tsuyuki - Long Beach CA, US
Taylor L. Gledhill - Huntington Beach CA, US
Jason Alan Woolard - Huntington Beach CA, US
William M. McDowell - Garden Grove CA, US
Darrell B. Freeman - Lakewood CA, US
Raul Vazquez - Anaheim CA, US

International Classification:

G05D 7/06
G01F 1/24
G01P 5/02
G01F 1/22
G01F 1/46

Abstract:

A flow rate assembly can include a fluid flow interface portion having a front facing wall and a back facing wall. The flow interface portion can include an inlet passage within the fluid flow interface portion, an outlet passage within the fluid flow interface portion, at least one inlet aperture extending through the front facing wall of the fluid flow interface portion into the inlet passage, and at least one outlet aperture extending through the back facing wall of the fluid flow interface portion into the outlet passage. In some cases, the fluid flow interface portion includes a plug forming at least a portion of the inlet passage.