Brian D Cox
Land Surveyors in San Luis Obispo, CA
License number
Utah 172763-9925
Issued Date
Jan 1, 1911
Expiration Date
Dec 31, 1999
Category
Engineer/Land Surveyor
Type
Engineer in Training - Obsolete
Address
Address
San Luis Obispo, CA
Professional information
Senior Embedded Software Engineer
Location:
Austin, Texas Area
Industry:
Computer Software
Work:
Zebra Imaging
- Austin, TX 2009 - 2013
-
Senior Systems Integration Engineer
Solids Flow Design, LLC
- Round Rock, TX 2002 - 2009
-
President
DTM Corporation/3D Systems Inc.
Jan 2000 - Aug 2002
-
Sr. Powder Engineer
Solids Flow Engineering, Inc.
- San Luis Obispo, CA 1998 - 2000
-
President
JR Johanson, Inc.
- San Luis Obispo, CA 1985 - 1998
-
Vice-President
Education:
University of California, Davis 1993
Master's degree, Mechanical Engineering Brigham Young University 1979 - 1985
Bachelor of Science (B.S.), Cum Laude, Mechanical Engineering
Master's degree, Mechanical Engineering Brigham Young University 1979 - 1985
Bachelor of Science (B.S.), Cum Laude, Mechanical Engineering
Skills:
C++, C#, Embedded Control, Read and Program from Schematics, SolidWorks 3D Modeling, SPI, USB, Object Oriented Design, Database Design, Model-View-Controller, Microcontroller Firmware, Embedded Software, Solidworks, Software Development, Hardware, Manufacturing, Electronics, Product Development, Testing, Integration Architecture, Integration, Programming, C, Firmware
Interests:
Building, aquaponics, windsurfing, kayaking
Flow-No-Flow Tester
US Patent:
5117699, Jun 2, 1992
Filed:
Nov 8, 1990
Appl. No.:
7/610530
Inventors:
Jerry R. Johanson - San Luis Obispo CA
Kerry D. Johanson - Atascadero CA
Brian D. Cox - San Luis Obispo CA
Kerry D. Johanson - Atascadero CA
Brian D. Cox - San Luis Obispo CA
Assignee:
JR Johanson, Inc. - San Luis Obispo CA
International Classification:
G01N 1100
US Classification:
73866
Abstract:
An improved flow-no-flow tester has two major advantages over its predecessor. First, it eliminates the need to invert the test cell after the compaction phase, thereby eliminating the possibility that failure of the compacted sample will occur before the failure load-measuring portion of the test can be done. Second, the improved tester determines the compaction load by measuring the force exerted by the sample against an upper piston, while a compressive force is applied to the sample by a lower piston. This results in greater accuracy than was obtained in the predecessor wherein the compaction load was taken to be the force applied to the compressing piston and which was in error due to the forces of friction and particle binding on the piston as it advanced against the sample. In addition, the improved tester minimizes the potential of particle binding during the failure portion of the test. These advantages result from the structure of the tester, in which the test cell is closed at its bottom by a lower piston that is used for applying the compaction load and that is closed at its upper end by an upper piston against which the sample is pushed in the compaction phase and which is used subsequently for applying a downward failure load.
Flow-No-Flow Tester
US Patent:
5289728, Mar 1, 1994
Filed:
Oct 16, 1991
Appl. No.:
7/781018
Inventors:
Jerry R. Johanson - San Luis Obispo CA
Kerry D. Johanson - Atascadero CA
Brian D. Cox - San Luis Obispo CA
Kerry D. Johanson - Atascadero CA
Brian D. Cox - San Luis Obispo CA
Assignee:
JR Johanson, Inc. - San Luis Obispo CA
International Classification:
G01N 1100
US Classification:
73866
Abstract:
An instrument for measuring certain physical properties of a sample of particulate material so that the flow characteristics of the material can be determined includes an improved compaction assembly having an upper piston that is surrounded by a retractable sleeve and further includes an improved test cell having cylindrical walls, having a failure outlet smaller than the diameter of the failure piston, and having a false bottom that can easily be removed from beneath a sample of compacted material to permit the failure portion of the test to be carried out. The tester can be used for determining the confined yield strength of the material, its bulk density, and its permeability.