Sink Strainer Cutting Tool for Hands-Free Debris Clearing

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Solution Overview

Problem

Existing sink drain systems face issues with debris clogging, as basket strainers only relocate blockages and require manual handling or removal, which can lead to further clogging downstream when cleaned.

Innovation Solution

A debris clearing implement with a cutting assembly attached to a handle, designed to fit over the strainer button or drain cup nut, allowing for cutting and forcing debris through the strainer or drain cup without removing it, thus preventing downstream clogging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the basket strainer is removed from the drain to empty debris, then the debris can be emptied without reaching into standing water, but the drain outlet opens and allows debris to enter and clog the drain cup outlet or form blockages in downstream pipes

Engineering Contradiction:
Improvedebris emptying operationVSAvoiddrain blockage prevention
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The cutting assembly is inserted into the basket strainer before debris removal to cut and shred debris into smaller pieces that can be pushed through the strainer bottom into the drain cup, preventing downstream blockages while maintaining the strainer in place

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The cutting assembly acts as an intermediary tool that processes debris within the strainer, cutting and shredding it so that it can be removed through the strainer bottom without taking the strainer out, thus preventing direct access of loose debris to the drain outlet

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the basket strainer is kept in place to prevent downstream clogging, then debris remains trapped in the strainer, but manual handling of debris is required which may lead to contact with standing water and food waste

Engineering Contradiction:
Improvedrain blockage preventionVSAvoiddebris removal operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The cutting assembly enables the strainer to clear its own debris by cutting and shredding accumulated material so it can be pushed through the bottom into the drain cup, eliminating the need for manual strainer removal and handling of debris

Inventive Principle:
Principle #25Self-service

3Reliability

If debris is allowed to accumulate in the basket strainer without cleaning, then the strainer maintains its protective function, but debris will eventually form a blockage and require strainer removal for cleaning

Engineering Contradiction:
Improvestrainer protective functionVSAvoidcleaning frequency
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The cutting assembly allows for continuous debris removal by cutting and shredding material as it accumulates, enabling periodic clearing through the strainer bottom without interrupting the strainer's protective function or requiring full removal for cleaning

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS8365343B2Sink drain debris clearing implement
Publication Date: 2013.02.05 SHERWOOD LELAND J
  • US8365343B2 patent drawing
  • US8365343B2 patent drawing
  • US8365343B2 patent drawing

AI summary

An implement for clearing debris from a drain cup or basket strainer in a sink includes an upright handle for gripping and operating the implement. A cutting member configured to cut up the debris and force it through the drain cup or basket strainer is mounted on a lower end of the handle. The cutting member includes a centrally disposed recess for the strainer basket handle or the basket attachment nut in the drain cup. A plurality of radially extending grooves are formed in a lower surface of the cutting member with cutting edges being formed on the edges of the grooves for cutting the debris and forcing it through the drain cup or basket strainer. The recess in the cutting member permits the blades of the cutting assembly to reach the base of the strainer without interference from the strainer basket handle or attachment nut.