Head Shaving Device With Perpendicular Blade Orientation
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Solution Overview
Problem
Conventional safety razors are not optimally designed for shaving curved body surfaces like the head, as their handle orientation is perpendicular to the cutting portion, making them inefficient for horizontally oriented surfaces.
Innovation Solution
A hand-held shaving device with a shaver base, blade carrier top, and blade carrier base that secures a double-edge safety razor blade at an optimal angle relative to the body surface, allowing for comfortable and efficient shaving by flexing the blade to a predetermined angle between 15° and 25°.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional safety razors with perpendicular handle and cutting portion are used, then they are convenient for shaving vertically oriented surfaces like face and legs, but they are inefficient for horizontally oriented surfaces like the head
Solution Approach 1:
The patent inverts the conventional razor orientation by positioning the cutting portion perpendicular to the handle axis, creating a configuration where the cutting edge is oriented horizontally when the handle is held vertically. This inversion allows the razor to effectively shave horizontally oriented surfaces like the head while maintaining ergonomic handling
Solution Approach 2:
The patent changes the spatial dimension of the cutting portion orientation. Instead of the cutting portion being parallel to the handle axis (conventional design), the cutting portion is positioned perpendicular to the handle axis, effectively rotating the cutting plane 90 degrees to match the horizontal orientation needed for head shaving
2Adaptability or versatility
If electrically powered shavers with rotating blades are used for head shaving, then head shaving capability is achieved, but the device becomes expensive and mechanically complex
Solution Approach 1:
The patent extracts the power source and motor components from the shaving device, reducing it to a simple manual razor. By removing the electrically powered rotating blade mechanism, the device becomes mechanically simple while retaining head shaving capability through the perpendicular cutting portion orientation
Solution Approach 2:
The patent employs a disposable razor blade design where the cutting portion is replaceable. This eliminates the need for complex mechanical systems while providing effective head shaving. The simple, inexpensive razor can be discarded and replaced when the blade becomes dull, avoiding the cost and complexity of maintainable electric shavers
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
Enables effective and efficient shaving of curved body surfaces by maintaining the razor blade at an optimal angle, improving user comfort and reducing manufacturing complexity compared to existing electric shavers.
Implementation Method 1
the blade carrier top exerts a force on the safety razor blade that is resisted by the blade rests and which results in flexion of the safety razor blade
Data Source
AI summary
A hand-held shaving device includes a blade carrier top and a blade carrier base that cooperate to secure a double-edge razor blade in place. The blade carrier top and the blade carrier base mount onto a shaver base that is designed to be held in a hand of a user. When assembled, the device provides rests that contact a body surface to be shaved and when in contact with the body surface set the razor blade at an optimal shaving angle. A process of shaving comprises contacting the body surface to be shaved and moving the device in a direction of the razor blade edge. The device is designed so that it can be used in either hand.