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Resume

David E. Demaray

33 Staggerwing Landing

Kalispell, Montana 59901

425-745-9332

E-mail: daved@nwlink.com

Objective: Obtain R & D support contracts which allow a rewarding use of my technical skills and talents as an instrument maker, mechanical designer, engineer.

Experience:

• Many years designing, engineering, and fabricating the mechanical/electro-mechanical components for scientific instrumentation, both custom and production:
• Designed, engineered, and fabricated scientific instrumentation from only a verbal description or rough sketches of the equipment needed
• Drafted master engineering documentation with current emphasis on Vellum 3D 99 CAD
• Set up and operated all standard manual machine shop tooling while maintaining close tolerances in a whole range of materials
• Performed semi-micro machining and TIG/Plasma Arc welding operations under the microscope
• Performed precision layout and inspection, designed tooling and fixtures, heat treated both non-ferrous and ferrous alloys
• Demonstrated skill utilizing TIG, arc, gas welding/soldering in fabricating ferrous, non-ferrous, and exotic refractory metal assemblies
• Produced electro-polished stainless steel components and complex completed assemblies

Special Expertise - Trained employees and co-workers in the following skills:

• Specialist in thin section welding of stainless steel components with TIG and Plasma Needle Arc welders
• Skilled in ultra-high vacuum system component design, materials selection, and fabrication techniques
• Knowledgeable and skilled in the design, material selection, and construction techniques for trace level (part per trillion) ambient air and gas sampling systems
• Skilled in the science and art of helium leak detector application to 10-10 std. cc/sec.

Employment History:

Three Links Scientific 5/98 - Current

Owner, manager

A consulting design, engineering, and instrument fabrication firm. Equipped with basic manual precision machine shop tooling and with TIG and gas welding equipment.

Notable achievements:

• Recently completed the design and prototype construction for Siemens Power Corp. of two successful eddy current probe systems to do in situ examination of critical portions of steam power turbine blades through the small view ports in the outer turbine housings. In one case the probe system was required to pass through a hole less than 1/2 inch in diameter and go 14 inches deep yet be able to inspect over 75% of the blade surfaces for cracks thus saving a teardown to accomplish the same examination.

University of Washington: 1/87 - 5/98

Technical Services Coordinator, 6/87 - 5/98

Department of Materials Science and Engineering

Supervised department technical staff; trained graduate students and other staff and faculty in proper machine shop practice; engineered, designed, and fabricated instrumentation and vacuum system components on request. Maintained and repaired lab furnaces, cold isostatic presses, mechanical testing instrumentation (tensile testers, impact testers, polishing equipment), X-ray diffraction instrumentation and related equipment. Provided cost center operation of the above. Provided helium leak detection and mass spectrometry services to departmental and commercial clients.

Notable achievements:

• Planned and programmed an inventory control data base to augment the university system, developed and implemented an inventory receiving system that greatly enhanced capitol inventory tracking efficiency, welded the foil thickness stainless steel encapsulation vessel for the hot isostatic pressing of the first successful superconductor compound sample prepared at the U of W. Selected and employed two outstanding individuals who have both won Outstanding Staff Achievement Awards from the College of Engineering.

I

Instrument Maker, 1/87 - 6/87

Advanced Ceramic Materials Program, Materials Science and Engineering

Demaray Scientific Instrument, Ltd. : 6/76 - 4/86

President and Chief Executive Officer

This experience covered all phases of small manufacturing business management: business, financial, and project planning; personnel management and training (13 employees); job estimation and negotiation; sales and marketing (domestic and international); public relations, trade show presentations, import-export, purchasing, engineering documentation systems, inventory control systems, office information systems, business computerization, and technical writing.

Notable achievements:

• 1980 - Designed and produced special spherical air sampling canisters which have become the standard for sampling canister cleanliness referenced by the National Institute of Science and Technology eighteen years after the fact.

   

• 1981 - U. S. Patent #4270381, Yeast Gas Production Recorder - Gasograph 12B and 12C

   

• 1982 - Completed the detail design and fabricated a Vacuum Insulated Dual Temperature Irradiation Furnace (-160 and +160 degrees C. temperature zones simultaneously contained within 1/2 inch diameter area) which won an I-R Magazine l-R 100 award for my client at Westinghouse Hanford Company.

• 1983 - Designed and fabricated a very successful hot cell compliant miniature tensile testing machine for the testing of neutron irradiated miniature metal samples.

   

Washington State University 2/67 - 6/76

Senior Instrument Maker, Technical Services Instrument Shop 6/67 - 6/76

Notable achievements:

• Designed and fabricated many different successful instruments for all scientific disciplines. Became an expert in thin section welding techniques in support of the surface physics research. Fabricated and internally electropolished the very complex ultra-high vacuum work chamber for the world's first successful Auger Spectrophotometer.

Engineering Aid/Instrument Maker, Agricultural Engineering Dept. 2/67 - 6/67

Notable achievements:

• Engineered, designed, and fabricated a multi-station, three variable atmosphere control system for egg hatchability studies.

Misc. short term employment 6/58 - 2/67

• Machinist, Fire Control Aid, Farm Hand

Education:

Washington State University, 74 semester credit hours, Mech. Eng. 1960 - 1966

Renton Vocational College, 40 hr. continuing ed. classes: 1998 - 1999

• Intro. to CNC Programming - Analytical Geometry and Trig,
• Intro. to MasterCam
• Intermediate Mastercam

Personal References:

• Dr. Steve Price, C-Thru Technologies, 415 N. Quay, Kennewick, WA lsprice@edaxppd.com, (509) 783-9850
• John Barber, MTS Corp., 4501 Guildhall Ct., Westlake Village, CA 91361 Home: (818) 707-0524

Honors, Publications, and Presentations :

• 1998 - Was referenced personally as the source of the cleanliness technology needed to meet the performance requirements of a SBIR solicitation by NIST for autofretage style high pressure gas chromatography reference material vessels.

   

• 1960 - Received the Inland Empire Science Fair Best Exhibit in Metallurgy Award for the design and fabrication of two experimental plasma arc torches.

Publications:

1. Krasnec, J. P., Demaray, D. E., Lamb, B., and Brenner, R., "An Automated Sequential Syringe Sampler for Atmospheric Studies," J. Tech, 1, 4, 1984
2. Krasnec, J. P., Demaray, D. E., "Sampling and Monitoring," published in the Proceedings of the 3rd International Conference on Indoor Air Quality and Climate, (Vol. 4), Aug. 20-24, Stockholm, Sweden, 1984
3. Hsu, D., "Methods for Yeast Gassing Tests," Cereal Foods World, Aug., 1984, Vol. 29, No. 8, p. 463 (Though not listed as an author on this publication, this paper was commissioned by Demaray Scientific Instrument to introduce a new method of yeast evaluation to the industry)
4. Krasnec, J. P., Demaray, D. E., "An Automated Environmental Gas Sampler for Toxic Contaminant Monitoring," published in the Proceedings of the APCA Specialty Conference on Measurement and Monitoring of Non-Criteria (Toxic) Contaminants in Air, March 22-24, Chicago, Illinois, 1983
5. Rubenthaler, G., Finney, P. L., Demaray, D. E., Finney, K. F., "Gasograph: Design, Construction, and Reproducibility of a Sensitive 12-Channel Gas Recording Instrument,"published in Cereal Chemistry, Vol. 57, No. 3, 1980, pp. 212-216.

Presentations:

1. Krasnec, J. P., Demaray, D. E., "Application of Multi-Station Sequential Syringe Sampler in Atmospheric Tracer Studies," a paper presented at the P.N.W.I.S. - A.P.C.A. Annual Meeting in Vancouver, B. C., November 15-17, 1982
2. Demaray, D. E., miscellaneous new product presentations at the annual conventions of the Air Pollution Control Association and the American Association of Cereal Chemists