Pressed Coffee Maker With Oil-Retaining Mesh and Easy Grounds Removal

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Solution Overview

Problem

Conventional paper-filtered coffee makers filter out coffee oils, reducing flavor, while non-filtered methods like French Press are messy and limited to personal use due to cleaning difficulties, making them unsuitable for commercial settings.

Innovation Solution

A coffee maker design featuring a brew chamber with a movable squeegee that recirculates coffee oils into the brew and a removable bottom for easy grounds disposal, allowing for large batch brewing without paper filters and facilitating cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a paper filter is used to prevent coffee grounds from entering the coffee tank, then ease of cleaning is improved, but coffee oils are filtered out which reduces flavor quality

Engineering Contradiction:
Improveease of cleaningVSAvoidcoffee oils
Core Design Contradiction:
Ease of operationVSQuantity of substance

Solution Approach 1:

The patent removes the paper filter from the brewing system entirely, extracting the filtering function and replacing it with a metal mesh filter that allows coffee oils to pass through while still preventing grounds from entering the tank. This resolves the contradiction by maintaining ease of cleaning without sacrificing coffee oil retention.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs a metal mesh filter with specific porosity that allows coffee oils to pass through while blocking coffee grounds. The mesh structure provides the necessary filtration without the oil-absorbing properties of paper, thus maintaining both ease of cleaning and flavor quality.

Inventive Principle:
Principle #31Porous materials

2Quantity of substance

If a non-paper-filtered coffee maker like French Press is used to retain coffee oils, then flavor quality is improved, but cleaning becomes difficult and messy making it unsuitable for commercial settings

Engineering Contradiction:
Improvecoffee oilsVSAvoidease of cleaning
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The patent divides the brewing chamber into distinct sections with a removable bottom that facilitates easy grounds removal. The metal mesh filter is positioned to separate the brewing area from the dispensing area, allowing for efficient cleaning and grounds disposal while retaining coffee oils in the brew.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent incorporates a movable squeegee that can be actuated to press coffee grounds against the metal mesh filter during brewing. This dynamic element improves the separation of grounds from the brew while maintaining oil retention, and the squeegee itself is designed for easy cleaning.

Inventive Principle:
Principle #15Dynamics

3Quantity of substance

If a manual French Press coffee maker is used for brewing, then coffee oils are retained for better flavor, but the device is limited to personal use due to small volume and cleaning difficulties

Engineering Contradiction:
Improvecoffee oilsVSAvoidbrewing volume capacity
Core Design Contradiction:
Quantity of substanceVSProductivity

Solution Approach 1:

The patent designs the brewing chamber with a removable bottom section that can be easily detached for grounds disposal. This segmented design allows the device to handle large volumes of coffee while maintaining ease of cleaning, making it suitable for commercial settings rather than just personal use.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent creates a brewing system that combines the oil-retention benefits of French Press with the large-volume capability of commercial coffee makers. The metal mesh filter and removable bottom design make the device universally applicable for both personal and commercial use, accommodating various brewing volumes.

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

Data Source

PatentUS8695485B2Apparatus and method for preparing pressed coffee
Publication Date: 2014.04.15 HONDA MOTOR CO LTD
  • US8695485B2 patent drawing
  • US8695485B2 patent drawing
  • US8695485B2 patent drawing

AI summary

In accordance with one embodiment, a pressed coffee maker is provided. The coffee maker can comprise a tank for storing coffee solution; a screen disposed in the tank for pressing coffee grounds in the tank; and a squeegee to clean the tank. A removable bottom can be used to both add new coffee grounds and remove used coffee grounds.