Telescoping Pet Ramp with Interlocking Abutment Mechanism

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Solution Overview

Problem

Existing pet ramps are difficult to use, unsafe, and inadequate for larger pets, often featuring sharp edges, insufficient length, and lack of rigidity, which can injure pets or owners and fail to provide a comfortable slope for easy vehicle access.

Innovation Solution

A telescoping pet ramp with obliquely angled abutment members and blow-molded plastic floor panels, featuring interlocking tongues for secure engagement and reduced bounce, along with glass fiber-reinforced plastic side rails for enhanced strength and safety, allowing easy extension and collapse for use and storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If telescoping ramps are extended by users and placed against the threshold, then ease of operation is improved, but device complexity increases due to telescoping mechanism

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The ramp segments are designed to telescope into one another, with each segment containing the next segment within it. This nesting arrangement allows the ramp to be compact for storage while extending to full length when needed, resolving the contradiction between ease of operation and device complexity by providing intuitive extension without complex assembly steps

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If known ramps are made longer to allow acceptable slope, then pet safety is improved, but device complexity increases

Engineering Contradiction:
Improvepet safetyVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The ramp is divided into multiple telescoping segments that can be extended to achieve the necessary length for an acceptable slope. Each segment is a simplified structure that telescopes into the next, avoiding the need for a single complex long-ramp design while ensuring pet safety through adequate length and proper inclination

Inventive Principle:
Principle #1Segmentation

3Strength

If abutment members have interlocking tongues with obliquely angled surfaces, then strength is improved, but manufacturing precision requirements increase

Engineering Contradiction:
ImprovestrengthVSAvoidmanufacturing precision
Core Design Contradiction:
StrengthVSManufacturing precision

Solution Approach 1:

The abutment members utilize composite construction with interlocking tongues featuring obliquely angled surfaces that engage to create rigid joints. The telescoping segments appear to use composite materials (metal or plastic construction) that provide both strength and ease of manufacturing, resolving the contradiction by achieving high strength through design geometry rather than material complexity

Inventive Principle:
Principle #40Composite materials

4Reliability

If ramp segments are rigidly coupled to decrease bounce, then pet safety is improved, but ease of operation worsens due to increased rigidity

Engineering Contradiction:
Improvepet safetyVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The ramp employs dynamic coupling through obliquely angled surfaces that engage to provide rigidity when extended, while allowing the segments to be easily telescoped when not in use. The interlocking mechanism transitions from a rigid connected state during operation to a compact separated state for storage, resolving the contradiction between pet safety and ease of operation

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

The solution provides a safe, easy-to-use, and sturdy pet ramp that minimizes bounce and fear in pets, ensuring secure access to vehicles and other elevated structures, while being easy to erect and store, thus addressing the limitations of existing ramps.

Implementation Method 1

the stops preferably having interlocking tongues that frictionally wedge together when the ramp is fully extended, thereby providing a secure joint with improved rigidity and decreased bounce

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS7493874B2Telescoping pet ramp
Publication Date: 2009.02.24 RADIO SYST CORP
  • US7493874B2 patent drawing
  • US7493874B2 patent drawing
  • US7493874B2 patent drawing

AI summary

A telescoping pet ramp having first and second ramp segments telescopically extendable from a compact state to an extended state. Side rails of the panels include end caps with abutment members for preventing the first floor panel and second floor panel from being separated when the pet ramp is fully extended, and including interlocking angled contact faces that frictionally engage one another when the ramp is fully extended.