Retractable Marine Cleat Assembly With Replaceable Wear Components
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Solution Overview
Problem
Existing retractable cleat assemblies for marine vessels are difficult to assemble, prone to wear due to plastic components, and require complete replacement when parts fail, leading to high maintenance costs and service life reduction.
Innovation Solution
A cleat assembly with a base plate and integral tubes, friction bushings, and threaded fasteners, allowing easy assembly and disassembly with tools, and featuring stainless steel components for durability and reduced tripping hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If numerous plastic parts are used in retractable cleat assemblies, then the assembly can achieve retractable functionality, but the service life is reduced due to wear
Solution Approach 1:
The patent changes the material parameter from plastic to metal (stainless steel) for the cleat body, tubes, and fasteners. This material substitution eliminates wear issues while maintaining the retractable sliding mechanism, thus preserving functionality while extending service life indefinitely through corrosion-resistant metal construction
Solution Approach 2:
The patent employs a composite construction combining stainless steel metal components with marine-grade hardware. The integration of metal cleat body, metal tubes, metal fasteners, and marine-grade sealants creates a wear-resistant composite assembly that maintains retractable operation while achieving enhanced durability and service life
2Ease of operation
If numerous parts are used in cleat assemblies, then retractable functionality is achieved, but assembly and maintenance become difficult
Solution Approach 1:
The patent divides the cleat assembly into distinct modular segments: the cleat body, tubes, fasteners, and base plate are separate interchangeable components. This segmentation allows each part to be manufactured independently and assembled systematically, simplifying both initial assembly and future maintenance operations
Solution Approach 2:
The patent designs the metal components with standardized threaded fasteners and universal mounting holes that can accommodate various installation configurations. The same component design serves multiple functions: structural support, sliding guidance, and easy disassembly for maintenance, reducing the need for specialized parts
3Ease of manufacture
If plastic parts are used in cleat assemblies, then manufacturing cost is reduced, but wear resistance and service life are compromised
Solution Approach 1:
The patent changes the material parameter from plastic to metal, accepting increased manufacturing cost in exchange for superior wear resistance. The stainless steel construction provides indefinite service life and eliminates the need for replacement, making the higher initial investment economically justified through eliminated maintenance and replacement costs
4Strength
If the cleat assembly is designed as a single integrated unit, then structural strength is improved, but maintenance requires complete replacement
Solution Approach 1:
The patent segments the cleat assembly into replaceable components (cleat body, tubes, fasteners) connected by threaded interfaces. This allows individual worn parts to be replaced without replacing the entire assembly, maintaining structural strength through proper component selection while enabling selective maintenance of only the necessary parts
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
Facilitates easy installation and maintenance, extends service life, and reduces costs by enabling component replacement without full assembly disassembly, while providing a reliable and durable marine cleat solution.
Implementation Method 1
a first friction bushing and a second friction bushing, each of the first friction bushing and the second friction bushing comprising a sleeve of flexible material including a gap configured to allow expansion and contraction of the friction bushing to be inserted respectively in the first base plate bushing receptacle and the second base plate bushing receptacle; a cleat comprising a securing portion and a first leg and a second leg extending from the securing portion, the first leg and the second leg spaced apart and configured to respectively slide in the first friction bushing and the second friction bushing
Data Source
AI summary
A cleat assembly is provided, which comprises a base plate comprising a face plate including a first and second leg receptacles, first and second tubes in communication with the first and second leg receptacles. Both the first and second tubes are integral with and extending from the face plate. The cleat assembly also comprises first and second friction bushings, and a cleat comprising a securing portion and a first and second legs extending from the securing portion configured to respectively slide in the first and second friction bushings to allow the securing portion to be raised from a stowed position to an extended position to allow a line to be secured to the securing portion.