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Walker Sloan

 

mechanical engineering • design and development

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SUMMARY

Mechanical design and development, from product specification and concept through manufacturing in FDA regulated environments. Interdisciplinary/interdepartmental communication. Vendor evaluation and high-tech component sourcing. Analysis of persisting or unprecedented problems. Technology/feasibility studies. SolidWorks.

"Product development today frequently presents problems for which there exist no prior definitions. In these situations, the responsible engineer must become expert where there are no experts. New technologies not only might, but usually do, cross discipline boundaries. Coping with lack of definitions, and working outside of my core discipline is something I often do."

"The lowest cost product is that which starts down the right path. Technical feasibility is only part of choosing that path."
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EXPERIENCE

2001-2007

Principal Engineer

Medical Device Development 		EXACT Sciences Corp. Marlboro, MA
  • Molded microplate disposables, including bonded filter plate.
  • Electrophoresis systems.
  • Microfluidics devices.

1994-2001

Consulting Engineer

Medical Device Development 		Exact Laboratories Inc. Maynard, MA
  • Microfluidic device and centrifuge.
  • Sample collector. Patented.
  • High amplitude shaker and cabinet for stool homogenization.
P.D. Co-op, Inc. Gorham, ME
  • Drug infusion pump system design.
  • Coil winding tool for coil with concave surface.

1990-1994

Principal Mechanical Engineer

Engineered core products and supported GMP manufacturing in a Medical Device start-up company

Cytyc Corporation Marlboro, MA
  • TransCyt® filter product with bonded polycarbonate membrane. Patents.
  • Microscope slide handling system.
  • Specified interactive testing of cell pools, filters, and ThinPrep® unit.
  • Slide prep robotic automation unit with unique safety features.

1990

Consulting Engineer

Eliminated problem aspects of laser drum plotter designs

 Optronics Corporation Chelmsford, MA
  • Eliminated redundant positioning components, solved recording drum mis-registration, and drive train vibrations in four different laser drum plotter products.

1984-1989

Part Time Consulting Engineer

Provided mechanical concepts and design support to state-of-the-art blood pressure metrology research.

 Joseph Seale Consulting Engineering Gorham, ME
  • Two-axes sweeping, servo-aimed ultrasonic transducer and arterial vibrator for non-invasive blood pressure metrology, for Critikon/J&J.
  • Radial artery external pulse-force transducer incorporating an EKG device to measure blood pressure pulse wave transit time from systole to arrival of the pulse wave at the radial artery.
  • Intraocular pressure transducer design.

1980-1989

Wang Laboratories Incorporated - Lowell, MA

1985-1989

Section Manager 		Evaluated OEM mass storage devices for incorporation into Wang product lines
  • Managed the evaluation of approximately 20 magnetic, optical, and microfilm mass storage peripherals.
  • Environmental and compliance testing.
  • Created departmental exhibits for two corporate-wide technology fairs.

1982-1984

Principal Mechanical Engineer 		Tested and developed dot matrix print heads
  • Managed R&D program for stored energy dot matrix print head.
  • Photoelectric shadow comparator on a Norland programmable digital scope.
  • Published article on test methods for ballistic wire dot matrix print heads.

1980-1981

Senior Mechanical Engineer 		Hired and managed mechanical design group for disk drives and test equipment.

1970-1980

Digital Equipment Corporation Maynard, MA

1972-1980

Mechanical Design Engineer 		Designed disk products and servo writers
  • Resonance/stability analysis.
  • Disk servo writers with 125 nanometer actuators: glass scale, laser interferometer, differential screw micrometer.
  • Vendor evaluation of disk recording heads and media.
  • Glass disk head flying height tester.

1970-1971

Mechanical Engineer 		Transferred products from design into manufacturing
  • Introduced three disk drive products into manufacturing.
  • Class 100 laminar flow clean room.

1969

Mechanical Engineer

Production engineering of disk magnetic recording head 		RCA Information Systems
Marlboro, MA
  • Manufacturing techniques and operational flow.
  • Layout/set up manufacturing area.

     Personal Projects:

 Wind energy systems, underwater habitats

EDUCATION

1968 Bachelor of Science - Physics, MIT, Cambridge, MA
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