Electric Shaver Spacer Elements for Controlled Stubble
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Solution Overview
Problem
Existing electric shavers fail to provide a controlled means for leaving stubble during shaving, especially when used on complex surfaces like the head, and attachments can unintentionally change the stubble length or detach undesirably.
Innovation Solution
An electric shaver with a housing designed for comfortable grip above the cutter surface, featuring flexible members and built-in spacer elements that allow for controlled stubble length by offsetting the cutter from the skin, compatible with various orientations and movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If trimmer attachments are used to leave stubble, then stubble length can be controlled, but the attachments may inadvertently unclip or release from the trimmer, resulting in undesired trimming beyond the intended length
Solution Approach 1:
The patent integrates the spacer element directly into the trimmer head assembly, merging the attachment function with the stubble control function into a single integrated component. This eliminates the risk of separate attachments detaching while maintaining precise stubble length control through the fixed spacer elements positioned around the cutting blade.
2Manufacturing precision
If trimmer attachments are used to leave stubble, then stubble length can be selected, but if the trimmer is passed perpendicular to hair growth, the resulting stubble may not have a uniform length
Solution Approach 1:
The patent employs multiple spacer elements distributed around the entire circumference of the cutting blade, creating localized protection zones at every point along the blade path. This ensures that regardless of the shaving direction or blade orientation, every portion of the skin receives uniform stubble length control through the locally positioned spacer elements.
3Adaptability or versatility
If electric shavers are designed with grip below cutting surface for face shaving, then they are optimized for face use, but they are not suitable for head shaving which requires grip above cutting surface
Solution Approach 1:
The patent designs the electric shaver with a balanced housing configuration and centrally positioned cutting elements that allow the device to function effectively in multiple orientations. The housing geometry and cutting head arrangement enable comfortable gripping with the grip above the cutting surface for head shaving, while maintaining operational effectiveness for face shaving as well, thus achieving multi-functional versatility.
Data Source
AI summary
An example electric shaver head is provided. The electric shaver head includes a shaver head housing, and at least one cutter assembly disposed in the shaver head housing. The electric shaver head includes two or more spacer elements positioned over the cutter assembly. The two or more spacer elements provide an offset distance from a top surface of the at least one cutter assembly to create stubble when shaving.