ATS All Terrain Stretcher

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ATS (All Terrain Stretcher)

• Chris Arnold
• Beth Pavlik
• Mike Rushia
• Scott Sanson

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Assumptions

• User 1 or 2 Search and Rescue team members
• Market SR, Military, Ski Patrol
• Need Inexpensive, compact, lightweight device
  for wilderness rescue operations
• Environment Densely forested mountainside with
  or without snow

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Limits

• Inexpensive Cannot use much high end material
  (total less than 400)
• Lightweight Compact Maximum victim height of 7
  ft, weight of 300 lbs, empty weight less than 40
  lbs
• Easy Assembly Must be fast to assemble (less
  than 10 min)
• Manageable Terrain Trees must be at least 2.5 ft
  apart

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Final Design Step 1
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Final Design Step 2
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Final Design Step 3
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Final Design Side View
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Final Design Shocks Springs

• Ideal shock Leaf spring
• Realistic shock Spring/ski
• Pawls for telescoping parts

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Final Design - Clamps

• Folding bike hinge
• Hinge/clamp system for rigidity
• Modular clamp
• Ski ? Wheel

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Frame BOM
.058 Chromoly
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Final Design - Nonframe

• Backpack style shoulder straps
• Ball joint
• Handles on 2 ends for 2 person rescue team
• Braking system
• Lever lowers

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Defense of Design (concepts)

• Crumple Frame
• Inflatable High material cost (60-100 per m2,
  about 300 min)
• Solid Frame
• Low material cost
• Wide range of materials

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Solid Frame Ideas

• Piece frame
• Good compactability
• Slow/Unclear assembly
• Accordion style hinged frame
• Good compactability, easy assembly
• Messy overlap, potential for bending

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Questions