1. Patrick Mead
Design Portfolio --
Mechanical Engineer

2. Table of Contents
Cover Page ……………………………………………………….. 1
Table of Contents …................................................................. 2
Marketing Demos …………………………………………………. 3
Sheet Metal ………………………………………………………... 10
Injection Molded Plastic ………………………………………….. 17
Fixtures ……………………………………………………………. 20
Thermal Analysis & Heat-sinks …………………………………. 28
Electro-Mechanical Products ……………………………………. 35
Resume ……………………………………………………………. 43
2

3. Marketing Demos
Hot Shot Assembly ………………………………………………… 4
Infrared Transmitter & Receiver ………………………………….. 5
Gunshot Flash detection system …………………………………. 6
Glucose Monitor ……………………………………………………. 7
Solder’s helmet with IR sensors ………………………………….. 8
Spectrometer optical path …………………………………………. 9
3

4. 4

5. Infrared Transmitter & Receiver Demo
5

6. Gunshot Flash Detector
6

7. GLUCOSE MONITOR
7

8. 8

9. 9

10. Sheet Metal
Overall Chassis design concept ………………………………….. 11
Chassis Side Panel …………..……………………………………. 12
Side Panel Flat Pattern ……………………………………………. 13
Ventilation Duct …………………………………………………….. 14
Ventilation Duct Flat Pattern ……………………………………… 15
Electrical Test Box ……………………………………………..….. 16
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11. 11

12. 12

13. 13

14. VENTILATION DUCT
14

15. VENTILATION DUCT FLAT PATTERN
15

16. ELECTRICAL TEST BOX
16

17. Plastic Injection Molded Part
Plastic Filter Holder …………………………………………..……. 18
17

18. INJECTION MOLDED PLASTIC FILTER HOLDER
18ISO BOT VIEW

19. 19
INJECTION MOLDED PLASTIC FILTER HOLDER
ISO TOP VIEW

20. Fixtures
Bed of Nails Flash Programming Fixture ………………………… 21
Flash Programming Fixture with Printed Circuit Board ..………. 22
Photomask Artwork for Detector Plates …………………………. 23
Reflector Weld Fixture …………………………………………….. 24
Electrode (OFHC) for Welding Reflectors ………………………. 26
Vibration Test Fixture ……………………………………………… 27
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21. 21

22. 22

23. 23
PHOTOMASK PATTERN FOR DETECTOR PLATES

24. 24
REFLECTOR WELDING FIXTURE -- VIEW 1

25. 25
REFLECTOR WELDING FIXTURE -- VIEW 2

26. 26

27. 27
VIBRATION TEST FIXTURE

28. Thermal Analysis & Heat-sinks
Typical Thermoelectrically Cooled Product ……….…………….. 29
Steady State Thermal Analysis ..…………………………………. 30
Thermal Analysis cross section ……………………..……………. 31
Heat-sink Assemblies ……………………………………………… 32
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29. 29

30. STEADY STATE THERMAL ANALYSIS
30

31. THERMAL ANALYSIS CROSS SECTION
31
40414 Thermal Analysis August 2011

32. ARRAY HEATSINK ASSEMBLY -- VIEW 1
32

33. ARRAY HEATSINK ASSEMBLY -- VIEW 2
33

34. ARRAY HEATSINK ASSEMBLY
34

35. Electro-Mechanical Products
Integrated Electronics Assembly …………………………………. 36
Infrared Emitter Coil Product ……………………………………… 37
Infrared Emitter Foil Product …………..………………………….. 38
256 Element Array Product …………..…………………………… 39
256 Element Array Product in ceramic LCC Package …………. 40
2x6 Array Product in Butterfly Package …………………………. 41
Donut Detector ……………………………………………………… 42
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36. INTEGRATED ELECTRONICS ASSEMBLY
36

37. INFRARED EMITTER COIL PRODUCT
37

38. INFRARED EMITTER FOIL PRODUCT
38

39. 256 ELEMENT ARRAY PRODUCT
39

40. 40

41. 41

42. "DONUT DETECTOR" 42