Rotary scrubber

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Solution Overview

Problem

Efficiently cleaning the interior surfaces of containers with deep openings is challenging due to limited rotational movement of cleaning tools, making it difficult to reach and clean the bottom areas where the sides meet the base.

Innovation Solution

A handheld container cleaning apparatus featuring a tube with a helical slot and a following pin that allows for enhanced rotational movement of a scrubber element through simple linear movement of the user's hand, utilizing a biasing element to rotate the scrubber element about its axis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If a sponge or brush on a long handle is used for manual cleaning, then the cleaning implement can reach deep containers, but rotational movement of the sponge or brush is difficult due to limited rotational movement of the user's hands/arms

Engineering Contradiction:
Improvelength of cleaning implementVSAvoidrotational movement capability
Core Design Contradiction:
Length of moving objectVSEase of operation

Solution Approach 1:

The invention converts the static, manually rotated brush into a dynamically self-rotating scrubber. The scrubber rotates automatically through mechanical interaction between the helical slot in the tube and the following pin, transforming linear hand movement into rotational scrubbing action. This dynamic mechanism eliminates the need for the user to manually rotate the brush while maintaining reach into deep containers.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The following pin acts as an intermediary element that translates the user's linear pushing motion into rotational movement of the scrubber. As the pin follows the helical slot path, it mediates between the simple linear motion of the user's hand and the complex rotational motion required for effective scrubbing, solving the contradiction between reach and rotational capability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the opening of the container is small to prevent hand reaching, then hand safety is improved, but manual cleaning of the bottom area becomes especially difficult

Engineering Contradiction:
Improvehand safetyVSAvoidcleaning effectiveness at bottom area
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The self-rotating mechanism allows the scrubber to actively engage with container surfaces through automatic rotation, compensating for the user's inability to manually rotate the tool. This dynamic rotation ensures effective cleaning of the bottom area where sides meet the base, even when the container opening is too small for hand insertion.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention adds a rotational dimension to the cleaning action through the helical slot mechanism. Instead of relying solely on linear back-and-forth movement, the scrubber introduces rotational motion in a new dimension, enabling effective cleaning of hard-to-reach bottom areas without requiring the user's hand to enter the container.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If simple linear movement of the user's hand is used, then ease of operation is improved, but rotational movement of the scrubber is insufficient for effective cleaning

Engineering Contradiction:
Improvesimplicity of user inputVSAvoidcleaning efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The helical slot and following pin mechanism serves as a mechanical intermediary that amplifies and transforms the user's simple linear hand movement into effective rotational scrubbing. This intermediary mechanism multiplies the cleaning productivity by converting easy linear motion into the complex rotational motion needed for thorough cleaning, resolving the contradiction between operational simplicity and cleaning efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention changes the motion parameters of the scrubber by converting linear displacement into rotational displacement through the helical geometry. The pitch and shape of the helical slot can be optimized to control the rotation speed and amplitude, thereby adjusting the cleaning efficiency parameter while maintaining simple user input, effectively resolving the contradiction between ease of operation and productivity.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables effective cleaning of the interior surfaces, including the bottom areas of containers, by facilitating rotational movement of the scrubber element, improving cleaning efficiency and ease of use.

Implementation Method 1

A biasing element is contained within the tube interior. The biasing element extends from the attachment end to the following pin.

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentUS10709231B2Rotary scrubber
Publication Date: 2020.07.14 MACOMBER LANCE RICHARD
  • US10709231B2 patent drawing
  • US10709231B2 patent drawing
  • US10709231B2 patent drawing

AI summary

A rotary scrubber apparatus, the apparatus includes a tube member having a helical slot, an attachment end portion, a holding end portion, and an internal cavity extending therethrough. A biasing element is contained within the internal cavity of the tube member. A following pin extends through the helical slot. The following pin has an external portion that engages a handle, and an internal portion that engages the biasing element. A scrubbing element is coupled with the attachment end of the tube member and rotationally fixed therewith. When the handle is pressed towards the attachment end and the handle is prevented from rotating about the tube member, the tube member rotates to rotate the scrubber element. The apparatus thereby provides rotational movement of the scrubber to be generated from only linear movement of the handle provided by a user.