Interchangeable Power Tool Base Housing With Proportional Power Control

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Solution Overview

Problem

Existing power tool systems lack a standardized platform that allows for interchangeable tools and efficient power delivery, leading to inefficiencies and increased complexity.

Innovation Solution

A power tool system featuring a removable battery pack and a common base housing with a controller and actuator, enabling proportional power delivery and user control across various tools, such as rotary tools and soldering irons.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a standardized platform with common base housing and controller is used across multiple tools, then adaptability and versatility improve, but device complexity increases due to integrating multiple functions into a single platform

Engineering Contradiction:
Improveinterchangeable toolsVSAvoidplatform integration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal base housing design that can accommodate multiple different tool types (drills, drivers, impact drivers, etc.) through a standardized platform. The common base housing includes integrated components such as battery pack interface, controller, and actuator that work across all tool variations, allowing one base design to serve multiple functions and tool applications.

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

2Use of energy by moving object

If proportional power delivery system with controller is implemented, then power efficiency and control precision improve, but device complexity increases due to additional electronic components

Engineering Contradiction:
Improvepower delivery efficiencyVSAvoidcontroller electronics
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent combines the controller, actuator, and power management electronics into an integrated system within the common base housing. Rather than separate components for each tool, the controller manages power delivery proportional to the selected power source capacity (e.g., 18V vs. 54V battery packs) and coordinates the actuator for tool operation, reducing overall system complexity while maintaining precise power control.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The controller implements proportional power delivery by monitoring the battery pack voltage and capacity, then automatically adjusting the power output to match the tool's requirements and the power source's capabilities. This feedback mechanism ensures optimal power efficiency without requiring complex manual intervention or oversimplified fixed-power delivery.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If removable battery pack with selective engagement is used, then ease of operation and adaptability improve, but device complexity increases due to engagement mechanisms and electrical interfaces

Engineering Contradiction:
Improvebattery pack installationVSAvoidengagement interface
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent separates the battery pack from the tool body, allowing the battery to be a removable, independently replaceable component. The base housing includes a dedicated battery receptacle with electrical contacts that engage with corresponding contacts on the battery pack when inserted. This segmentation allows users to easily swap batteries between different tools without complex tools or mechanisms, while the standardized interface keeps the engagement system simple despite serving multiple tool types.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12296455B2Power tools and power tools platform
Publication Date: 2025.05.13 BLACK & DECKER CORP
  • US12296455B2 patent drawing
  • US12296455B2 patent drawing
  • US12296455B2 patent drawing

AI summary

A power tool system includes a removable battery pack a first tool and a second tool. The first tool includes a first base housing that is selectively engageable with the removable battery pack and a first tool portion connected to the first base housing by a first connecting section. The second tool includes a second base housing that is selectively engageable with the removable battery pack and a second tool portion connected to the second base housing by a second connecting section. The second tool base housing houses a second controller that provides a proportional power delivery system for the second tool and second tool base housing also includes a second actuator for providing user control of the second tool.