Single-Layer Watch Strap Layout Without Under-Case Bulk
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Solution Overview
Problem
Existing Nato-style watch straps lift the watch above the wrist due to material layers passing underneath, adding unwanted height.
Innovation Solution
A watch strap with a flexible material that is at least twice the circumference of the wrist, featuring a clasp and keepers, allowing it to double back on itself without any portion passing between the watch body and the wrist, maintaining a single-piece design and adjustable length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If material layers pass underneath the watch in Nato-style straps, then the strap secures the watch to the wrist, but the watch is lifted above the wrist adding unwanted height
Solution Approach 1:
The strap is divided into distinct segments: a first end with clasp, a second end without attachment, and intermediate sections with keepers. This segmentation allows the strap to secure the watch without requiring material layers to pass underneath, as the unattached second end prevents the lifting effect while maintaining security through the clasp mechanism and keeper positioning.
Solution Approach 2:
Instead of having both ends of the strap attached to the watch (traditional Nato-style), the invention inverts the configuration by leaving the second end unattached. This reversal eliminates the need for material to pass underneath the watch body, thereby preventing the watch from being lifted above the wrist while still achieving secure attachment through the clasp and keeper system.
2Ease of operation
If the strap length is increased to at least twice the wrist circumference, then the strap can double back without passing under the watch, but the device complexity increases
Solution Approach 1:
The extended strap length serves multiple functions: it allows the strap to double back on itself without passing under the watch, provides sufficient material to reach from the clasp to the keepers and back, and enables adjustment for different wrist sizes. This multi-functionality justifies the increased length without proportionally increasing complexity, as the same continuous piece of material accomplishes multiple objectives.
Solution Approach 2:
The strap incorporates dynamic adjustment capabilities through keepers positioned at different locations along the strap. The clasp can be attached to different keepers depending on wrist size, allowing the effective length to be dynamically adjusted. This dynamic adaptability resolves the complexity issue by providing a simple adjustment mechanism rather than requiring multiple fixed-length straps.
Data Source
AI summary
The invention provides, in some embodiments, watch straps and watches that preserve the aesthetic features of a “Nato” or military-style watch strap while avoiding the drawbacks associated with the Nato watch strap. The watch straps and watches provide the aesthetic feature of a Nato watch strap without having extra layers of the watch strap between the watch case and the wrist of the wearer.