Removable Knife Scales and Integrated Bottle Opener Mechanism
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Solution Overview
Problem
Conventional multi-tool knives compromise comfort, safety, and convenience by either weakening the blade or requiring additional time and movement to access integrated bottle openers, which are often notched handles or separate components.
Innovation Solution
A knife design featuring a rotatable blade with a lock back catch and spring spacer forming a bottle opener, where scales can be removably coupled to the handle, serving as tire levers or other tools without interfering with the blade's functionality, and can be used independently or combined for various tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a bottle opener is provided as a notched handle, then the bottle opening function is integrated, but the comfort and safety of the grip on the knife is compromised
Solution Approach 1:
The bottle opener function is segmented from the handle and integrated into the blade assembly through the lockback mechanism. The lockback catch and spring spacer work together to provide bottle opening capability without modifying the handle's grip surface, thus maintaining grip comfort while adding functionality.
2Adaptability or versatility
If a bottle opener is provided as a separate component that folds out of the handle, then the bottle opening function is added, but additional time and movement are required before use
Solution Approach 1:
The bottle opener function is merged with the lockback mechanism that is already present in the knife. The lockback catch and spring spacer serve dual purposes: securing the blade and providing bottle opening capability. This integration eliminates the need for separate folding components and provides immediate access to the bottle opening function.
3Adaptability or versatility
If a notched blade is used as a bottle opener, then the bottle opening function is integrated, but the strength of the blade is compromised
Solution Approach 1:
The lockback catch and spring spacer act as intermediary components that provide the bottle opening function without directly modifying the blade structure. The lockback mechanism, which is structurally separate from the blade, provides the lever action needed for opening bottles, thus preserving the blade's full strength while adding functionality.
4Device complexity
If scales are permanently attached to the knife body, then the knife structure is simplified, but the versatility of the scales as separate tools is reduced
Solution Approach 1:
The attachment mechanism for the scales is made dynamic rather than static. The scales can be attached to the knife body when needed and removed when required for separate use. This dynamic attachment system allows the structure to adapt between being integrated (for knife functionality) and separated (for tool functionality), resolving the contradiction between structural simplicity and versatility.
Data Source
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AI summary
A knife includes a knife body having two liners and a blade positioned between the two liners. The knife further includes two scales, each scale being removably coupled to one of the two liners. Each scale is configured for use as a tool separate from the knife body when removed from the knife body. A bottle opener may be formed in the knife body.