Pivoting Razor Blade Unit Elastomeric Biasing Mechanism
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Solution Overview
Problem
Conventional shaving systems require a pusher/follower mechanism to provide resistance during shaving and return the blade unit to a rest position, which can be cumbersome and inefficient.
Innovation Solution
A reusable shaving system with a pivoting blade unit and a handle interface element, featuring an elastomeric element that biases the blade unit towards a rest position, eliminating the need for a pusher/follower mechanism by providing resistance and return force through elastomeric loops or materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pusher/follower mechanism is used to provide resistance and return force, then the blade unit can be returned to rest position, but the device complexity increases
Solution Approach 1:
The patent extracts and eliminates the pusher/follower mechanism from the shaving system, replacing it with an elastomeric element that directly provides the return force. This removes the complex mechanical linkage while maintaining the essential function of returning the blade unit to its rest position.
Solution Approach 2:
The patent replaces the mechanical pusher/follower system with an elastomeric element that uses elastic deformation to provide the return force. This substitution transitions from a complex mechanical linkage system to a simpler elastic element that achieves the same functional outcome through material properties rather than mechanical components.
2Force
If additional components like pusher and follower are included, then resistance during shaving is provided, but the quantity of substance increases
Solution Approach 1:
The patent merges the functions of providing resistance and returning the blade unit into a single elastomeric element. This element simultaneously provides the necessary resistance during shaving and the return force when released, eliminating the need for separate pusher and follower components.
Solution Approach 2:
The elastomeric element is designed to perform multiple functions: it provides resistance during the shaving stroke, stores energy during deformation, and delivers return force to reset the blade unit. This multi-functional design replaces what previously required multiple specialized components.
3Stability of the object's composition
If a pusher/follower mechanism is used, then the blade unit can be biased to rest position, but the device complexity increases
Solution Approach 1:
The patent changes the physical state and properties of the elastomeric element to achieve the biasing function. By selecting appropriate elastomeric materials with specific durometer values and configuring the element's geometry, the system achieves stable rest position biasing through material parameters rather than complex mechanical adjustments.
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 elastomeric element in the shaving system effectively provides the necessary resistance during shaving and returns the blade unit to its rest position, enhancing user experience and extending the system's usability without the need for additional components.
Implementation Method 1
an elastomeric element disposed between the blade unit and handle interface element... configured to bias the blade unit towards a rest position
Data Source
AI summary
Replaceable shaving assemblies are disclosed that include a blade unit, an interface element configured to removably connect the blade unit to a handle, on which the blade unit is pivotably mounted, and an elastomeric element disposed between the blade unit and interface element. Shaving systems including such shaving assemblies are also disclosed, as are methods of using such shaving systems.