Adjustable Bow Stop With Jack Screw for Secure Boat Stabilization

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Solution Overview

Problem

Existing bow stops on boat trailers fail to securely stabilize larger boats on bunks, allowing them to move forward or backward due to insufficient adjustability and friction, leading to potential damage.

Innovation Solution

An adjustable bow stop that can be mounted on existing winch posts, allowing forward and backward adjustment using a hand or power crank, with a bracket coated in rubber for cushioned contact and a mechanism to accommodate various boat sizes, featuring a jack screw or motor-powered actuator for precise positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed bow stop is used, then the structure is simple, but it cannot accommodate various boat sizes and fails to provide secure stabilization

Engineering Contradiction:

Improveaccommodation of various boat sizesVSAvoidstructure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bow stop is made adjustable along the trailer frame, allowing it to be positioned at different locations to accommodate various boat sizes. This dynamic positioning capability enables the same device to adapt to different loading scenarios while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The bow stop device serves multiple functions: it provides a cushioned stop for different boat sizes, stabilizes boats on bunks during transport, and prevents forward or backward movement. The adjustable nature allows a single device to handle various boat types and sizes, enhancing its universality.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If a non-adjustable bow stop is used, then the device is simple, but it allows boats to move forward or backward on bunks

Engineering Contradiction:

Improvestabilization of boats on bunksVSAvoidadjustability mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The bow stop's position can be adjusted dynamically to optimize stabilization for different boat configurations. This adjustability ensures reliable stabilization by allowing the bow stop to be placed at the most effective location for each specific loading scenario.

Inventive Principle:

Principle #15Dynamics

3Object-affected harmful factors

If a rigid bow stop is used, then the structure is simple, but it causes damage to the boat or trailer due to lack of cushioning

Engineering Contradiction:

Improvedamage to boat or trailerVSAvoidcushioned bracket structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The bow stop incorporates a cushioned bracket that provides shock absorption and cushioning before contact occurs. This beforehand cushioning protects both the boat and trailer from damage by reducing impact forces during loading and transport operations.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The cushioned bracket likely combines different materials to achieve both structural integrity and cushioning properties. This composite approach allows the device to maintain strength while providing protective cushioning against damage.

Inventive Principle:

Principle #40Composite materials

4Reliability

If the bow stop cannot be cranked aft, then the structure is simple, but it cannot tighten up against the bow to secure safely for transport

Engineering Contradiction:

Improvesecure stabilization for transportVSAvoidcranking mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The bow stop can be cranked aft to adjust its position and tighten against the boat's bow. This dynamic adjustment capability ensures secure stabilization during transport by allowing the user to optimize the contact pressure and positioning for each specific loading scenario.

Inventive Principle:

Principle #15Dynamics

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

Ensures secure stabilization of boats on trailers by adjusting to fit different sizes, preventing movement and minimizing damage through adjustable friction and cushioned contact points.

Implementation Method 1

a bracket coated in rubber for cushioned contact

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

featuring a jack screw or motor-powered actuator for precise positioning

Methodology Applied

Scientific EffectScrew mechanism: Screw

Implementation Method 3

allowing forward and backward adjustment using a hand or power crank

Methodology Applied

Scientific EffectMechanical advantage: Mechanical Advantage

Data Source

PatentUS20250368118A1Adjustable bow stop for boat trailer

Publication Date: 2025.12.04 ARMSTRONG ABRAHAM C

AI summary

A system and method for an adjustable bow stop for a boat trailer whereby the bow stop may be moved forwards or backward by a powered drive or jack screw whereby the bow stop can be attached to boat trailers allowing the user to move the bow stop roller aft to eliminate the gap between the bow of a vessel and stop after hauling up ramp.