Integrated Leather Vamp for Athletic Skates

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Solution Overview

Problem

Conventional leather-type athletic skate bodies are difficult to manufacture automatically due to their complex stitching process, which is time-consuming and prone to errors, and the visible stitches in the head portion are aesthetically unpleasing and prone to breaking, leading to separation of the skate pieces.

Innovation Solution

An athletic skate body with an integrated leather vamp main body made from a single bent piece, featuring a seamless toe box surface and attached strengthening pieces, where the rear edges are aligned and sewn together, eliminating visible stitches and allowing for automated manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If two leather pieces are combined by sewing at front edges and rear edges to form the skate body, then the skate body can be assembled from pre-cut pieces, but the manufacture process becomes complicated and time-consuming

Engineering Contradiction:
Improvemanufacture process simplicityVSAvoidmanufacturing time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent merges two separate leather pieces into a single integrated vamp base. The vamp base includes a front end, rear end, and both lateral sides as one continuous piece, eliminating the need to sew two separate pieces together. This integration directly resolves the contradiction by simplifying the manufacture process while reducing the number of stitching operations required.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If two leather pieces are sewn together at front edges and rear edges, then the skate body can be constructed from modular pieces, but the stitching process becomes curved and difficult to manufacture

Engineering Contradiction:
Improvemanufacturing easeVSAvoidstitching process complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent combines two separate leather pieces into one integrated vamp base that includes the front end, rear end, and both lateral sides. This eliminates the complex curved stitching required to join two pieces, as the vamp base is now a single piece that can be more easily manufactured and assembled.

Inventive Principle:
Principle #5Merging (Combining)

3Manufacturing precision

If strengthening pieces are attached to the inner surface of the leather vamp main body after two stitches are sewn, then the strengthening pieces can be positioned on the shaped vamp, but the work becomes complicated and the strengthening piece cannot be located precisely

Engineering Contradiction:
Improvestrengthening piece positioning precisionVSAvoidwork complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies strengthening pieces to the vamp base before the vamp base is sewn into the final skate assembly. By performing this action preliminarily, while the vamp base is still in a more accessible flat or semi-flat state, the strengthening pieces can be positioned more precisely and attached more easily, reducing work complexity.

Inventive Principle:
Principle #10Preliminary action

4Shape

If the head portion is combined of two leather pieces with front edges aligned and combined by sewing, then the skate body can be constructed from two pieces, but the stitches are visible and aesthetic is compromised

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidstructure complexity
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The patent merges two separate leather pieces into one integrated vamp base that forms the entire head portion including front end, rear end, and lateral sides. This eliminates the visible stitching line across the head portion, improving aesthetic appearance while the internal structure remains functional.

Inventive Principle:
Principle #5Merging (Combining)

5Reliability

If two leather pieces are combined by sewing at front edges, then the skate body can be assembled from two pieces, but the stitches may be broken easily causing separation

Engineering Contradiction:
Improvestitch durabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines two leather pieces into one integrated vamp base, eliminating the stitching joints that are prone to breaking. By removing these vulnerable connection points, the reliability of the head portion structure is improved, as there are no stitches that can break and cause separation of pieces.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS10624414B2Athletic skate body
Publication Date: 2020.04.21 SAKURAI SPORTS MFG
  • US10624414B2 patent drawing
  • US10624414B2 patent drawing
  • US10624414B2 patent drawing

AI summary

An athletic skate body has an integrated leather vamp main body, a heel accessory piece, multiple strengthening pieces, a tongue, a shoe lining, an inner board, and a sole. The integrated leather vamp main body has a seamless toe box surface portion and a first lateral surface portion and a second lateral surface portion extending rearward from two sides of the toe box surface portion. The first and the second lateral surface portions are sewed with a heel accessory piece and thus a heel portion is formed. With the seamless toe box surface portion, strength of a head portion of the athletic skate body is enhanced, and a vamp base can be cut into shape by automation equipment. Thus, with the plane and integral vamp base attached with multiple strengthening pieces precisely, the manpower is saved and the quality of the athletic skate body is improved.