Adjustable Hair Cutting Comb with Movable Finger Guide

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Solution Overview

Problem

Existing hair cutting devices lack adjustability for length and angle, are cumbersome, and do not accommodate both left-handed and right-handed users, making it difficult for new stylists and individuals cutting their own hair to achieve predictable and reproducible results.

Innovation Solution

A hair cutting apparatus featuring a comb with a spine, handle, and transverse teeth, along with adjustable fingers that can be securely attached at various positions, allowing for customizable length and angle adjustments to accommodate different users and cutting styles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If adjustable guides are added to allow length and angle adjustments, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveadjustability for length and angle of cutVSAvoidcumbersomeness of the device
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The comb is divided into modular components: a fixed comb body with teeth and a separate adjustable finger assembly with lobe. The finger assembly can be detached and reattached at different positions along the comb spine, allowing length and angle adjustments without making the entire device complex. This segmentation enables adaptability while maintaining simplicity of each individual component.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The finger assembly is designed to be dynamically adjustable rather than fixed. The releasable connection mechanism allows the finger to be moved to different positions on the comb spine, enabling dynamic adjustment of cutting length and angle. This dynamic capability provides versatility without permanent complexity, as the adjustment mechanism is simple and intuitive.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If traditional comb and scissors techniques are used, then skill and experience can achieve quality cuts, but the process is time-consuming and requires practiced dexterity

Engineering Contradiction:
Improvequality of cutVSAvoidtime required for cutting
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The comb with attached finger lobe performs preliminary measurement and positioning actions before cutting. The finger lobe rests on the scalp to pre-determine the cutting length and angle, eliminating the need for continuous manual measurement during cutting. This preliminary action ensures quality cuts while reducing the time and skill required, as the measurement is already established by the adjustable finger position.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The adjustable finger lobe acts as an intermediary between the comb and the cutting scissors. It provides a physical reference point that mediates the cutting process, allowing inconsistent users to achieve consistent results. The finger lobe translates complex measurement and positioning tasks into a simple tactile reference, reducing the time and skill barrier for quality cuts.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If fixed-length guides are used, then one specific length can be facilitated, but the device cannot accommodate different cutting lengths or angles

Engineering Contradiction:
Improveease of use for specific cutVSAvoidaccommodation of different lengths and angles
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The finger assembly is designed to be dynamically adjustable rather than fixed. The releasable connection mechanism allows the finger to be moved to different positions on the comb spine, enabling dynamic adjustment of cutting length and angle. This dynamic capability provides versatility without permanent complexity, as the adjustment mechanism is simple and intuitive.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The comb design incorporates universal functionality by allowing the same comb body to work with multiple finger assemblies of different lengths and configurations. The standardized attachment mechanism enables one comb to serve multiple cutting purposes by simply changing the finger assembly, providing adaptability for different lengths and angles while maintaining ease of operation through a consistent interface.

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

Data Source

PatentUS9173469B2Apparatus for cutting hair
Publication Date: 2015.11.03 ZHANG XIAO JING
  • US9173469B2 patent drawing
  • US9173469B2 patent drawing
  • US9173469B2 patent drawing

AI summary

An apparatus for cutting a person's hair, having a comb with a spine, a handle that extends axially from the spine and a plurality of teeth that extends transversely from the spine, and at least one finger that extends transversely from the spine substantially perpendicularly to the plurality of teeth, the at least one finger terminating in a lobe that is shaped to comfortably follow a surface of the person's head and shaped to gently scoop and lift hair away from the person's head.