Heated Razor Heat Dissipating Strip Design
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Solution Overview
Problem
Existing heated razors have an inefficient mechanism for delivering warmth to the skin during shaving due to the minimal surface area of heated blades in contact with the user's skin.
Innovation Solution
A razor design featuring a heat dissipating strip within the cartridge, heated by a resistive member and insulating elements, with a power source and electrical circuit to maintain a skin-contacting surface temperature between 30° and 70°C, enhancing heat distribution across a larger area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If razor blades are heated using heating elements, then the blades provide warmth to the skin during shaving, but the minimal surface area of the blades in contact with skin results in inefficient heating
Solution Approach 1:
The patent transitions from heating only the blade surface (one dimension) to heating a heat dissipating strip that extends across the guard and cap structures (multiple dimensions), thereby increasing the effective heating surface area in contact with or near the skin without changing the blade geometry
Solution Approach 2:
The patent introduces a heat dissipating strip as an intermediary between the heating element and the skin. This strip has larger surface area than the blade alone and serves as a mediator to transfer heat more efficiently to the skin during shaving
2Productivity
If a heat dissipating strip is added to increase heating surface area, then heating efficiency is improved, but the device complexity increases due to additional components
Solution Approach 1:
The heat dissipating strip serves multiple functions: it acts as a heat transfer medium, provides structural support within the cartridge, and increases the heating surface area. By combining multiple functions into a single component, the patent reduces the need for additional separate parts
Solution Approach 2:
The patent merges the heating function with the existing cartridge structure by integrating the heat dissipating strip into the guard and cap assemblies. This consolidation approach combines multiple elements into a unified structure, reducing overall device complexity while achieving the heating enhancement
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 improved warmth distribution across a larger skin contact area, enhancing the comfort and efficiency of the shaving experience by maintaining a consistent and controlled temperature.
Implementation Method 1
The resistive member of the heating element delivers heat to the heat dissipating strip
Implementation Method 2
The heat dissipating strip comprises a skin contacting surface and a second surface opposed to the skin contacting surface
Implementation Method 3
The first surface of the insulating member is joined to the second surface of the heat dissipating strip. The second surface of the insulating member is joined to the first surface of the resistive member
Data Source
AI summary
A razor having a handle with a power source. A cartridge has a skin contacting surface mounted to the handle. A metallic heat dissipating strip has an upper skin contact surface adjacent to the skin contacting surface of the cartridge. A heating element is positioned below the heat dissipating strip. The heating element has a resistive member with a pair of electrical contacts and a resistance of about 0.5 Ohms to about 20 Ohms. A ceramic insulating member is positioned between the metal heat dissipating strip and the resistive member. An electrical circuit is in electrical communication with the power source and is configured to deliver energy to the resistive member to heat the resistive member of the heating element. The resistive member of the heating element delivers heat to the heat dissipating strip.