Razor Guard Grate Spacing Skin and Blades
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Solution Overview
Problem
Wet-shave razors with multiple blades often cause ingrown hairs, razor burn, and irritation due to direct skin contact and are difficult to use for achieving a polished stubble appearance, with existing solutions being either restrictive or limited in compatibility with different razor types.
Innovation Solution
A removable guard for wet-shave razors featuring a frame and grate design that creates space between the skin and blades, allowing for trimming while preventing direct contact, and can be securely mounted on various razor types, including disposable and cartridge razors, with optional barbs for neat hair alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple blades are used on wet-shave razors to achieve a close shave, then shaving efficiency and hair removal completeness are improved, but skin irritation, ingrown hairs, and razor burn increase due to direct blade-skin contact
Solution Approach 1:
The patent introduces a comb attachment as an intermediary element between the razor blades and the skin. The comb's teeth create physical spacing that prevents direct contact between the blade edges and the skin surface, thereby eliminating razor burn and ingrown hairs while preserving the hair-cutting function. The comb acts as a mediator that allows the blades to trim hair without the harmful direct skin contact that occurs in traditional multi-blade razors.
2Object-affected harmful factors
If traditional safety razors or straight razors are used to avoid skin irritation, then skin comfort is improved, but ease of use and travel convenience deteriorate
Solution Approach 1:
The comb attachment is designed with universal compatibility to fit multiple types of razor handles and blade cartridges. It can be attached to and removed from various razor systems, allowing users to enjoy the skin-friendly benefits of single-blade or safety razor designs while maintaining the convenience and portability of modern cartridge razors. This multi-functional attachment bridges the gap between traditional and modern shaving systems.
3Shape
If hair is trimmed shorter to achieve a polished stubble appearance, then aesthetic appearance is improved, but risk of cutting skin and causing injury increases
Solution Approach 1:
The comb attachment serves as a physical barrier and guide that prevents the razor blades from contacting the skin directly. When trimming short stubble, the comb's tooth structure maintains a safe distance between the blade edges and the skin surface, eliminating the risk of accidental cuts while still allowing the blades to trim hair to the desired short length for a polished appearance.
4Reliability
If comb attachments are designed to fit specific razor heads to ensure proper securing, then attachment reliability is improved, but adaptability to different razor types deteriorates
Solution Approach 1:
The comb attachment incorporates a universal mounting design that can be securely attached to various types of razor handles and cartridge systems. The attachment mechanism is engineered to accommodate different razor geometries while maintaining reliable securing, allowing the same comb attachment to be used across multiple razor types without compromising attachment strength or stability.
Data Source
AI summary
A guard is provided to fit over a blade-retaining portion of a razor configured for wet shaving. The guard may comprise a frame defined by top and bottom rails, vertically spaced by first and second side edges and a plurality of elongated members defining a grate. Means for compressibly securing the guard over the blade-retaining portion of a razor chosen from a disposable and cartridge-type razor are disposed along the length of at least one of the top and bottom rails. When disposed over the blade retaining portion, the grate portion of the guard spaces any blades retained in the razor from the surface of a user's skin while still leaving such blades at least partially exposed to the user's facial or body hair. This enables a user to trim, rather than fully shave, his hair and further protects the user's skin from the harmful effects of close shaving.