Composite Bunk Rail System with Low-Friction Surfaces
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Solution Overview
Problem
Current trailer systems using wood with carpet coverings are prone to abrasion, rotting, and mechanical damage, leading to scratches and entrapment of contaminants, which can damage vehicles during transport and handling, and existing plastic solutions lack durability and safety.
Innovation Solution
A composite bunk rail system with low-friction ultra-high molecular weight polyethylene plastic surfaces bonded to shock-absorbing rubber cushions and adjustable support frames, eliminating mechanical fasteners and providing a durable, weather-resistant solution for loading and unloading vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If wood with carpet coverings is used in trailer systems, then the surface provides basic support and cushioning, but it causes abrasion, rotting, mechanical damage, scratches, and entrapment of contaminants
Solution Approach 1:
The patent uses a composite structure combining polyethylene plastic (for low friction and durability) with rubber or foam cushions (for shock absorption and protection). This composite material approach resolves the contradiction by providing both the slippery surface needed to prevent damage during loading/unloading and the durability needed to resist rotting and abrasion.
Solution Approach 2:
The patent replaces traditional wood and carpet combinations with a more durable plastic-rubber composite system that eliminates the need for frequent replacement due to rotting and wear, effectively treating the bunk rail system as a long-lasting component rather than a short-lived one.
2Reliability
If rigid plastic liners are used instead of wood with carpet, then durability is improved, but the surface becomes too slippery and lacks shock absorption
Solution Approach 1:
The patent combines rigid polyethylene plastic with flexible rubber or foam cushions in a layered composite structure. The plastic layer provides durability and the slippery surface for easy loading/unloading, while the rubber/foam layer provides shock absorption to protect vehicles from impact damage during handling.
Solution Approach 2:
The patent applies different material properties to different layers of the bunk rail system: the outer polyethylene surface provides low friction and durability, while the inner rubber/foam layer provides shock absorption. This local differentiation of material qualities allows the system to simultaneously achieve both durability and impact protection.
3Strength
If mechanical fasteners such as staples, brads, nails and screws are used in wood and carpet constructions, then the structure is held together, but they can mar vehicle surfaces
Solution Approach 1:
The patent eliminates mechanical fasteners (staples, brads, nails, screws) from the bunk rail system design. Instead, it uses a monolithic or bonded composite construction of polyethylene and rubber/foam that maintains structural integrity without exposing any hard fastening elements that could mar vehicle surfaces.
Solution Approach 2:
The patent creates a homogeneous or uniformly bonded composite structure where the polyethylene and rubber/foam layers are integrated without visible or protruding fasteners. This homogeneous construction maintains structural strength while eliminating surface irregularities that could damage vehicles.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces damage risks by providing a slick, adjustable, and shock-absorbing surface that protects vehicles from scratches and abrasion, maintains structural integrity, and ensures safe handling and transport, while being impervious to weather and environmental factors.
Implementation Method 1
low coefficient of friction surfaces
Implementation Method 2
shock absorbing cushions such as, but not restricted to, rubber with a 40 to 70 Shore Durometer hardness rating
Data Source
AI summary
A composite design bunk rail system comprises low coefficient of friction adjustable slides with a shock absorbing base, simplifying and precluding damages from loading and handling vehicles, a supporting structure, and adjustable support frames.