Charles L Mohr

US Patent:

6348803, Feb 19, 2002

Filed:

Nov 6, 2000

Appl. No.:

09/707442

Inventors:

Charles L. Mohr - Richland WA 99352

International Classification:

G01R 2732

US Classification:

324642, 324643, 324632

Abstract:

A sensor system for use with time domain reflectometry systems to allow measurement of relative proportions of intermixed constituents having differing electrical permittivities contained in a fluid mixture. The sensor has at least one primary electrode and one secondary electrode which are spaced apart across a flow channel. One electrode is connected to a first conductor carrying the active time domain reflectometry signal pulse. The other electrode is connected to the passive or ground conductor which carries any reactive signal resulting from the active signal. A fluid mixture of variable proportions will demonstrate a variable dielectric constant which affects the reflected signals sensed by the time domain reflectometer.

US Patent:

6643599, Nov 4, 2003

Filed:

Oct 17, 2000

Appl. No.:

09/690147

Inventors:

Charles L. Mohr - Richland WA 99352
Brandt C. Mohr - Richland WA 99352

International Classification:

G01N 340

US Classification:

702108, 702138, 702 41, 73 81, 73 78

Abstract:

A fruit tester provides a motor driven intrusive plunger with associated sensors to determine digital data indicative of plunger position, force resisting plunger intrusion and constant pressure creep. Sensor data is presented to a computer for storage, analysis and feedback control of the plunger. The plunger powering train includes a belt driven ball screw translator to convert rotary to linear motion and an âSâ type stress block with plural bridge interconnected strain gauges to sense pressure resisting intrusion to allow accurate measurements. Methods of analysis are disclosed to determine both resistance to plunger penetration and plunger creep at fixed pressure, in each of at least two concentric zones of a fruit, which are related by software for accurate determination of fruit condition as a function of time, both present and future.

US Patent:

61442119, Nov 7, 2000

Filed:

Jun 25, 1998

Appl. No.:

9/105302

Inventors:

Charles L. Mohr - Richland WA

International Classification:

G01R 2704

US Classification:

324642

Abstract:

A sensor system for use with time domain reflectometry systems to allow measurement of relative proportions of intermixed constituents having differing electrical permittivities contained in a fluid mixture. The sensor comprises at least one primary electrode and one secondary electrode which are spaced apart across a flow channel. One electrode is connected to a first conductor carrying the active time domain reflectometry signal pulse. The other electrode is connected to the passive or ground conductor which carries any reactive signal resulting from the active signal. A fluid mixture of variable proportions will demonstrate a variable dielectric constant which affects the reflected signals sensed by the time domain reflectometer.

US Patent:

57239797, Mar 3, 1998

Filed:

Jul 8, 1996

Appl. No.:

8/677582

Inventors:

Charles L. Mohr - Richland WA

International Classification:

G01R 2704

US Classification:

324642

Abstract:

A sensor for use with time domain reflectometry systems to allow measurement of relative proportions of intermixed constituents having differing electrical permittivities contained in a fluid mixture. The sensor comprises a central primary electrode and a pair of adjacent outer secondary outer electrodes. The fluid mixture is located between the electrodes during sensing. A dielectric layer covers exposed sensing surfaces of the electrodes to electrically isolate the electrodes from the fluid mixture and to prevent dissipation of a time domain reflectometry signal propagated through the sensor.

US Patent:

47868570, Nov 22, 1988

Filed:

Apr 24, 1986

Appl. No.:

6/855805

Inventors:

Charles L. Mohr - Richland WA
Frederick R. Reich - Richland WA

International Classification:

G01N 2700

US Classification:

324 585B

Abstract:

Methods and apparatus for determining the relative proportions of intermixed constituents of a multiphase fluid system. The constituents for which relative proportions are being measured must have measurably different electrical permittivities. The systems use at least one electrically conductive probe having two conductors which are spaced apart and capable of receiving the fluid system therebetween. Time domain reflectometers present a stimulating time varying electrical signal to the probes and receive and measure reflected signals generated at impedance changes in the transmission line and probe. The probe transit time and/or associated average probe velocity provide a measure of the fluid system conditions which can be compared to predetermined values corresponding to various relative proportions of the intermixed constituents. A measure of the relative portions of the constituents is thus provided. The variability of individual probe transit velocity data can be measured, analyzed and used to measure fluid system turbulence.

US Patent:

55549365, Sep 10, 1996

Filed:

Dec 1, 1994

Appl. No.:

8/349152

Inventors:

Charles L. Mohr - Richland WA

International Classification:

G01R 2704

US Classification:

324642

Abstract:

A sensor for use with time domain reflectometry systems to allow measurement of relative proportions of intermixed constituents having differing electrical permittivities contained in a fluid mixture. The sensor comprises a central primary electrode and a pair of adjacent outer secondary outer electrodes. The fluid mixture is located between the electrodes during sensing. A dielectric layer covers exposed sensing surfaces of the electrodes to electrically isolate the electrodes from the fluid mixture and to prevent dissipation of a time domain reflectometry signal propagated through the sensor.

US Patent:

20190305817, Oct 3, 2019

Filed:

Mar 30, 2018

Appl. No.:

15/941336

Inventors:

Charles L. Mohr - Richland WA, US
Brandt C. Mohr - Richland WA, US
Preston May - Richland WA, US
Tony Cottam - Richland WA, US
Erik Von Reis - Kennewick WA, US
Christopher Mulkey - West Richland WA, US
Ryan Sams - Kennewick WA, US
Daniel Kenney - Richland WA, US
William Rausch - Richland WA, US
Kevin Dawes - Richland WA, US

Assignee:

Mohr and Associates, Inc. - Richland WA

International Classification:

H04B 3/46
G05F 1/10
G01R 31/11
G01R 27/06

Abstract:

A method for detecting an operational condition of a multi-conductor cable is described, and which includes generating a first, single ended, time domain reflectometer signal which is introduced into a multi-conductor cable; processing the first, single ended, time domain reflectometer signal so as to generate a first, differential time domain reflectometer signal; supplying the first, differential time domain reflectometer signal to the multi-conductor cable; converting a reflected, differential time domain reflectometer signal into a second, single ended, time domain reflectometer signal; numerically and/or graphically analyzing the second, single ended, time domain reflectometer signal; and identifying, by the numerical and/or graphical analysis, an operational condition of the multi-conductor cable undergoing the testing.

US Patent:

20170350740, Dec 7, 2017

Filed:

Jun 3, 2016

Appl. No.:

15/172558

Inventors:

Charles L. Mohr - Richland WA, US
Brandt C. Mohr - Richland WA, US
Benno Mohr - Pullman WA, US
Michael Stordahl - Kennewick WA, US
James Van Corbach - Sunnyside WA, US
Erik Von Reis - Kennewick WA, US
Christopher Mulkey - West Richland WA, US
Ryan Sams - Kennewick WA, US
David Hurley - Pasco WA, US
Gordon Anderson - Benton City WA, US
Daniel Kenney - Richland WA, US
William Rausch - Richland WA, US
Edgar Gilbert - Ocean Shores WA, US

Assignee:

Mohr and Associates - Richland WA

International Classification:

G01F 1/74
G01F 5/00
G01F 1/708

Abstract:

An apparatus for identifying and measuring volume fraction constituents of a fluid using time domain analysis and frequency domain analysis to identify individual volume fraction constituents within a pipe on a real time basis and to measure the volume of the individual volume fraction constituents flowing through the pipe on a real time basis.