Powered Material Transport Cart for Lifting and Uneven Terrain

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Solution Overview

Problem

Existing material transport carts lack versatility and efficiency in handling various terrains, payloads, and lifting capabilities, limiting their adaptability and functionality in diverse work environments.

Innovation Solution

The material transport cart incorporates a powered lift assembly, adjustable bed assembly, and multiple wheel configurations, along with a motor-driven wheel system and removable battery, enabling enhanced mobility, payload handling, and lifting capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a material transport cart is designed with basic manual operation, then it is simple in structure and easy to manufacture, but it lacks lifting capability and versatility in handling various payloads

Engineering Contradiction:
Improvelifting capabilityVSAvoidstructure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical operation with an electric motor-driven system. The motor is coupled to the wheel through a drive mechanism, eliminating the need for manual pushing or pulling. This substitution provides lifting capability through the powered drive system while maintaining relatively simple structural implementation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The cart is designed with a material support body that can handle various types of materials and payloads. The powered lift assembly and adjustable bed configuration enable the cart to perform multiple functions including transporting, lifting, and positioning different materials, thereby achieving versatility without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Productivity

If the cart is equipped with powered lift assembly and motor-driven wheels, then mobility and payload handling capability are improved, but energy consumption increases

Engineering Contradiction:
ImprovemobilityVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The powered lift assembly operates periodically rather than continuously, activating only when lifting or positioning operations are required. The motor-driven wheels provide power during movement phases and can coast or be manually assisted during transition phases, reducing overall energy consumption while maintaining high mobility when needed.

Inventive Principle:
Principle #19Periodic action

3Adaptability or versatility

If the cart incorporates adjustable bed assembly and multiple wheel configurations, then adaptability to different terrains and payloads is improved, but device complexity increases

Engineering Contradiction:
Improveadaptability to terrainsVSAvoidconfiguration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cart features an adjustable bed assembly that can change its configuration dynamically to suit different payload types and terrain conditions. The wheel system allows for different configurations (e.g., single wheel, dual wheels) that can be selected based on the operational requirements. These dynamic adjustments provide adaptability through relatively simple mechanical reconfiguration rather than complex fixed systems.

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 cart provides improved maneuverability, tighter turning radius, and versatile payload handling, allowing it to navigate uneven terrain and perform tasks such as pallet loading/unloading with ease.

Implementation Method 1

A removable battery is electrically coupled to and operable to supply power to both the motor and the powered lift assembly

Methodology Applied
Scientific EffectBattery (electricity): Battery (electricity)

Implementation Method 2

a motor operable to drive the wheel

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 3

The powered lift assembly is operable to lift the cart body relative to the base member

Methodology Applied
Scientific EffectMechanical force: Mechanical Force

Data Source

PatentEP3826899B1Material transport cart
Publication Date: 2026.01.07 MILWAUKEE ELECTRIC TOOL CORP
  • EP3826899B1 patent drawingFigure 1~2
  • EP3826899B1 patent drawingFigure 3~4
  • EP3826899B1 patent drawingFigure 5~6

AI summary

A material transport cart includes a cart body, a material support body coupled to the cart body, a wheel coupled to the cart body, a motor operable to drive the wheel, and a powered lift assembly. The powered lift assembly is coupled to the cart body and to the material support body. The powered lift assembly is operable to lift the material support body relative to the cart body. A removable battery is electrically coupled to and operable to supply power to both the motor and the powered lift assembly