Power Rake Rotor Adjustment for Versatile Terrain Reshaping

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Solution Overview

Problem

Existing power rakes face challenges in efficiently reshaping and resurfacing uneven terrain due to issues with material type, spatial constraints, and the need for multiple devices or manual intervention, leading to increased time, labor, and cost.

Innovation Solution

A power rake with a variable controlled rotor that is vertically and rotatably adjustable, allowing for multiple reshaping options, and equipped with a control system for efficient adjustment, eliminating the need for additional devices and reducing manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the operator uses a single power rake device, then device complexity is reduced, but the ability to handle different terrain types and spatial constraints is limited

Engineering Contradiction:

Improvenumber of power rake devicesVSAvoidcapability to handle different terrain types

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The rotor assembly is made dynamically adjustable through hydraulic actuators that enable vertical movement and rotational adjustment. This allows the rotor to adapt its position and orientation to different terrain conditions and spatial constraints, providing versatility without requiring multiple separate devices.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The power rake is designed with a rotor assembly that can perform multiple functions including leveling, grading, creating swales, and removing weeds. The adjustable rotor configuration enables a single device to handle various terrain types and landscaping operations that previously required multiple specialized tools.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If the operator slows down the vehicle motion, then the power rake has more time to work hard or compacted material, but productivity decreases

Engineering Contradiction:

Improveeffectiveness on compacted materialVSAvoidwork rate on compacted material

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The rotor assembly can adjust its vertical position and rotational parameters to optimize performance on different material types. By changing these parameters dynamically, the power rake maintains high effectiveness on compacted materials while operating at higher vehicle speeds, thus preserving productivity.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the power rake has a large footprint, then it has better stability and working capability, but it cannot operate in spatially constrained areas

Engineering Contradiction:

Improvestability during operationVSAvoidability to operate in constrained areas

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The rotor assembly's ability to rotate and adjust vertically allows the power rake to maintain stability during operation while reducing its effective footprint when needed. The dynamic adjustment capability enables the device to navigate and operate in spatially constrained areas without sacrificing operational stability.

Inventive Principle:

Principle #15Dynamics

4Adaptability or versatility

If the operator needs to switch between different power rake sizes, then the ability to match device size to work area is improved, but the time and labor for disengagement and reengagement increases

Engineering Contradiction:

Improvematching device size to work areaVSAvoidtime for device replacement

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The adjustable rotor assembly allows a single power rake device to effectively cover a range of work area sizes by modifying its operational configuration. The rotor can be adjusted to suit different spatial requirements, eliminating the need to physically swap between multiple power rake sizes and reducing the time and labor associated with device replacement.

Inventive Principle:

Principle #6Universality (Multi-functionality)

5Manufacturing precision

If the operator manually resurfaces the work area, then precision and control are improved, but labor requirements and completion time increase

Engineering Contradiction:

Improvesurface reshaping precisionVSAvoidresurfacing speed

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The power rake with adjustable rotor assembly performs the resurfacing operation automatically through mechanical action, eliminating the need for manual intervention. The rotor's adjustable configuration provides precision control while maintaining high-speed automated operation, combining the benefits of manual precision with mechanical productivity.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12359395B2Power rake

Publication Date: 2025.07.15 VENTURE PRODUCTS LLC

AI summary

A power rake for attachment with a vehicle. The power rake includes a main frame. The power rake also includes an adjustment assembly operably engaged with the main frame, and the adjustment assembly is independently moveable relative to the main frame. The power rake also includes a rotor assembly operably engaged with the adjustment assembly, and the rotor assembly is independently moveable relative to the main frame by the adjustment assembly. The rotor assembly is adapted to be pivoted via the adjustment assembly relative to a vertical axis of the main frame. The adjustment assembly and the rotor assembly are selectively vertically adjustable relative to a vertical axis of the main frame. The rotor assembly is selectively rotatably adjustable relative to a vertical axis of the main frame.