Tiger Claw Deck Fasteners Senior Design Group Sean

Tiger Claw Deck Fasteners Senior Design Group Sean OKeeffe, James Bagg, Bo Song, Aaron Wagner, and Jon Gardner

Introduction Tiger Claw is a company that sells hidden fasteners in the deck building industry. l Tiger Claw deck fasteners are sold in more than 120 retail outlets nationwide. l Tiger Claw is the user and sponsor for the design. l

Introduction The project idea was to design a gun/hidden fastener combination. l Current fasteners are a 4 or 6 step process. l This product could give them an advantage in an open and growing market. l

Customer Needs l l l l Faster process. Reliable fastener. Viable cost. Maintain 3/16” spacing. 1 person/step process. Safe installment. Ease of use (set up, use, maintain). Goal was to make process viable for the mid to large sized contractor.

Specifications Small time installing fasteners (<5 sec). l Upheaval test for fastener. l Visibility test for acceptable 3/16” spacing. l Cost (Affordable for contractor). l Customer acceptance rating (90%). l Ergonomic rating (90%). l Design for Lifetime (>5 years). l Weatherproof and Durable (Drop test). l

CONCEPT GENERATION -12 Original Ideas -Constraints -Customer Needs -Feasibility -Elimination Tools

-Concepts Narrowed -Constructive Criticism -Concepts Built Up Again -Continuous Brainstorming Process

Selection Criteria

Concept Selection l Originator (Original and Penetrator) l Combination of two designs Shoots from above deck l Uses anvil to split staple l Rollers for quick installation l

Concept Selection (cont) l Helicopter l Two-step process l Drive nail into joist l Torque edges into floorboards l High upheaval strength

Concept Selection (cont) l Poseidon l Shot from side/below deck l 3 -pronged staple l Anvil to redirect staple Capable of fully constraining project l Adjustable spacing between deck boards l

Critical Subsystems l Originator l Constraining Both Deck Boards l Syncing the Feed Mechanism l Bending Fastener Within the Board Gap l Conflicting Forces l Possibly Need to be a Two Step Process

Critical Subsystems l Helicopter l Feed Mechanism l Extremely l Two-Step Process Required Possibly l Two l Difficult Triggers, Two Cylinders? Constraining Both Deck Boards

Critical Subsystems l Poseidon l Pneumatic Cylinder Below Decking l Parallel to Deck Boards – Large, Awkward l Perpendicular to Deck Boards – Additional Mechanism to Force Staple into Boards. l Feeding Mechanism Below Decking

Questions? ?