Fingertip Shaving Device with Elastomeric Protective Layer
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Solution Overview
Problem
Conventional hair shaving devices are bulky, difficult to use on intricate body parts, and pose risks of skin cuts due to exposed blades, while also being challenging to manufacture and require visual aids for operation.
Innovation Solution
A fingertip mountable, disposable shaving device with a base unit, shaving unit comprising criss-cross patterned blade assemblies and elastomeric inserts, and a top unit, featuring a self-adhesive design and elastomeric protective layers to prevent skin cuts, allowing safe and close shaving without visual aids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional razors with exposed blades are used, then shaving effectiveness is improved, but skin safety deteriorates due to cutting risks
Solution Approach 1:
The patent introduces an elastomeric protective layer as an intermediary between the blade and skin. This layer covers the blade edges during non-use, allowing effective shaving when needed while preventing skin cuts during handling and storage. The protective layer acts as a mediator that enables both shaving effectiveness and skin safety at different times.
Solution Approach 2:
The patent employs dynamic blade coverage where the elastomeric protective layer can be positioned to cover or expose blade edges as needed. The protective layer is movable and adaptable, allowing the blade to transition between exposed (for shaving) and covered (for safety) states, resolving the contradiction between effectiveness and safety.
2Ease of operation
If fingertip mountable devices are made small and flexible, then ease of operation on intricate body parts is improved, but device complexity increases
Solution Approach 1:
The patent divides the shaving device into distinct functional segments: a base unit with adhesive for fingertip mounting, a shaving unit with blade assemblies, and a top unit. This segmentation allows each component to be optimized independently for its specific function while maintaining overall simplicity and flexibility for use on intricate body parts.
Solution Approach 2:
The patent utilizes flexible elastomeric materials for the protective layer and mounting structure, enabling the device to conform to curved and intricate body surfaces. These flexible thin films provide the necessary adaptability for easy operation on difficult-to-reach areas without requiring complex mechanical structures.
3Ease of manufacture
If disposable shaving devices are designed for single use, then manufacturing simplicity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent designs the shaving device as a disposable product intended for single use. This approach simplifies manufacturing by eliminating the need for complex assembly and disassembly mechanisms required for reusable devices. The blade assemblies are pre-configured with precise geometry during manufacturing, and the entire device is discarded after one use, avoiding the need for user-replaceable components.
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 device provides safe, close, and flexible shaving of difficult-to-access areas, is easy to manufacture and use, and does not require electrical power, facilitating shaving by feel while minimizing the risk of skin cuts.
Implementation Method 1
an elastomeric protective layer non-removably attached to one surface of the blade so as to provide a protective lip along the cutting edge of the blade
Implementation Method 2
The bottom surface is coated with an adhesive and covered with a releasably connected protective peel off layer
Data Source
AI summary
A fingertip mountable shaving device for shaving hair includes a base unit, a shaving unit, an enclosing unit and a top unit. The shaving unit has a plurality of blade assemblies and a plurality of elastomeric inserts. Each blade assembly further includes a plurality of uniformly spaced, equally high and parallel blade members, tilted at a predetermined angle, such that the plurality of blade assemblies intersect in a criss-cross patterned grid. Elastomeric inserts provided on each peripheral side of the blade assembly, support the corresponding blade assembly in place to maintain the predetermined angle. The device provides multiple blades and allows safe and close shaving particularly from difficult to access body parts by relying on the sense of feel rather than visibility of the surface to be shaved, and is easy to manufacture.