Self-Inking Stamp With Interchangeable Insert and No Central Strut

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Solution Overview

Problem

Existing self-inking stamps with central struts lack space for a viewing window, resulting in an offset replica of the stamp image and increased manufacturing costs due to the need for multiple stamp variants with fixed inserts.

Innovation Solution

A self-inking stamp design without a central strut, allowing for interchangeable stamping inserts, enabling customization and reducing manufacturing costs by enabling the use of a single stamping component with various inserts, including text plates, date units, and IBAN codes, which can be easily swapped and customized.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a central strut is used in the self-inking stamp design, then the structural stability is improved, but the space for a viewing window is reduced and the replica of the stamp image becomes offset

Engineering Contradiction:
Improvestructural stabilityVSAvoidspace for viewing window
Core Design Contradiction:
Stability of the object's compositionVSArea of stationary object

Solution Approach 1:

The invention removes the central strut from the stamp design, extracting the problematic structural element that was blocking the viewing window area. This allows the viewing window to be implemented without the offset replica issue, while the stamp remains functionally stable through alternative design arrangements.

Inventive Principle:
Principle #2Taking out (Extraction)

2Manufacturing precision

If multiple stamp variants with fixed inserts are produced, then the print quality is maintained, but the manufacturing costs and storage costs increase

Engineering Contradiction:
Improveprint qualityVSAvoidmanufacturing costs
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The stamp is divided into two main segments: a standardized stamping component and interchangeable stamping inserts. This segmentation allows the main body to be mass-produced once, while only the inserts need to be manufactured in various configurations, significantly reducing overall manufacturing costs and storage requirements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The standardized stamping component is designed to be universal, capable of accommodating multiple different stamping inserts. This multi-functionality allows a single base unit to serve multiple purposes by simply changing the insert, eliminating the need to produce and store multiple complete stamp variants.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple stamp variants are manufactured and stored, then the customization options are provided, but the storage costs and inventory complexity increase

Engineering Contradiction:
Improvecustomization optionsVSAvoidstorage costs
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

By segmenting the stamp into a permanent base component and removable inserts, the system allows customization without requiring storage of complete assembled variants. Only the small, interchangeable inserts need to be inventoried, dramatically reducing storage space and inventory complexity while maintaining full customization capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The design enables easy discarding of worn or obsolete stamping inserts while retaining the valuable standardized base component. The base unit can be recovered and reused with different inserts, reducing the need to store and manage complete stamp assemblies for different applications.

Inventive Principle:
Principle #34Discarding and recovering

Data Source

PatentUS11090964B2Stamp and stamping insert, especially as a replacement part for a stamp
Publication Date: 2021.08.17 TRODAT GMBH
  • US11090964B2 patent drawing
  • US11090964B2 patent drawing
  • US11090964B2 patent drawing

AI summary

In some embodiments, a stamp with metallic elements, may comprise at least one stamping component and one stamping insert. The stamping component may be formed of a top part with a handle element and a bottom part with a cushion-receiving element. The stamping insert may be connected so as to move synchronously via a reversing mechanism having a slide track in the bottom part via a shaft or trunnion to the top part. In the resting position a text plate mounted on the stamping insert may abut against an ink pad soaked with ink in the cushion-receiving element. The metallic elements can be attached from the outside onto the top and bottom parts formed from plastic material and these are fixed via a fastening system of the upper and lower parts. The metal part of the bottom part is fixed on a surface of the plastic part.