Projected Sewing Pattern Alignment Without Fabric Obstruction
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Solution Overview
Problem
Conventional sewing patterns, both paper-based and digital, are cumbersome, difficult to reuse, and obstruct the view of the fabric, making it challenging to position printed designs accurately and securely cut fabric pieces without sliding during the cutting process.
Innovation Solution
A projection system that projects sewing patterns directly onto the fabric, including a vertical beam for adjustable projector height, a cutting mat underlay to prevent fabric movement, and a computing device for pattern storage and calibration, allowing for precise cutting and reuse of patterns without physical paper obstructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If paper patterns are used to guide cutting, then the pattern lines are visible and can be followed, but the paper covers the fabric print and makes it difficult to position the print in a specific location
Solution Approach 1:
The patent uses a projector to create an optical copy of the pattern lines directly on the fabric surface, eliminating the need for physical paper patterns. This allows the fabric print to remain fully visible while providing precise pattern guidance through projected lines that can be seen overlaid on the fabric design.
Solution Approach 2:
The patent replaces the mechanical paper pattern system with an optical projection system. Instead of physically placing paper on fabric, the system uses light projection to display pattern lines, eliminating the obstruction problem while maintaining alignment precision through optical rather than mechanical means.
2Ease of operation
If conventional cutting mats are used, then cutting can be performed on the mat surface, but pieces of fabric can slide or move during the cutting process
Solution Approach 1:
The patent applies a cutting mat underlay to the cutting mat surface before placing the fabric. This preliminary action creates a high-friction surface that prevents fabric sliding during cutting, while still allowing the fabric to be positioned and adjusted as needed for the cutting operation.
Solution Approach 2:
The patent changes the surface friction parameter of the cutting mat by adding an underlay layer. This increases the coefficient of friction between the mat and fabric, preventing unwanted movement during cutting while maintaining ease of operation for fabric placement and cutting tool movement.
3Adaptability or versatility
If multiple sizes are printed on the same paper pattern sheet, then all sizes are available in one packet, but once a size is cut out it cannot be reused and all paper pieces must be saved
Solution Approach 1:
The patent uses digital projection to create reusable optical copies of patterns for each size needed. The projector can display any size pattern from digital storage without consuming physical material, allowing unlimited reuse and reconfiguration of patterns without the need to save multiple paper pieces.
Solution Approach 2:
The patent transforms the static paper pattern into a dynamic digital projection system. The projector can change the displayed pattern size and configuration on demand, allowing the same physical setup to serve multiple sizes without physical reconfiguration or material consumption.
4Adaptability or versatility
If a vertical beam with adjustable height is used to position the projector, then the projector height can be adjusted for different surfaces, but the system becomes more complex with additional components
Solution Approach 1:
The patent designs the vertical beam to serve multiple functions: it provides structural support for the projector, enables height adjustment for different surface positions, and offers a stable mounting platform. This multi-functionality justifies the added complexity by consolidating several requirements into a single integrated component.
Data Source
AI summary
A projection system for projecting sewing patterns onto a surface comprises a vertical beam, a projector, and a cart. The vertical beam includes (a) a floor engaging portion at a bottom end and (b) a ceiling engaging portion at a top end, the ceiling engaging portion being vertically movable with respect to the floor engaging portion such that, when in use, the floor engaging portion and the ceiling engaging portion engage a floor and a ceiling, respectively, to anchor the projection system adjacent the surface. The projector is configured to receive data representing the sewing patterns and to project the sewing patterns. The cart is operably attached to the projector and slidably attached to the vertical beam, wherein sliding the cart vertically adjusts a height of the projector above the surface.