Contoured Gutter Scrubber for Full-Contact Sidewall Cleaning
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Solution Overview
Problem
Existing scrubbers for rain gutters fail to achieve 100% surface contact and apply uneven pressure due to their design, making it difficult to effectively clean the contoured surfaces without using ladders, which is dangerous and inefficient.
Innovation Solution
A scrubber with a backing plate and a removable open cell sponge pad attached via a double swivel joint assembly, allowing for 100% surface contact and constant pressure application, specifically designed to fit the contours of rain gutters with interchangeable pads for different sizes, using a handle to operate from the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a soft brush on a pole is used to clean the gutter, then the cleaning operation can be performed from the ground, but the bristles do not make full contact with the contoured surface resulting in uneven cleaning
Solution Approach 1:
The scrubbing pad is formed with a contoured surface that matches the ogee-curve profile of the gutter. The pad includes an upwardly extending portion that contacts the upwardly extending portion of the gutter, a substantially flat face that contacts the substantially flat face of the gutter, and a downwardly extending portion that contacts the downwardly extending portion of the gutter. This curvature matching ensures 100% surface contact and uniform pressure distribution across the entire gutter surface.
Solution Approach 2:
The scrubbing pad has different regions with different geometries designed to contact specific regions of the gutter. The upwardly extending portion contacts the upwardly extending portion of the gutter, the flat face contacts the flat face, and the downwardly extending portion contacts the downwardly extending portion. Each region is optimized for its specific contact zone to achieve uniform cleaning across the entire contoured surface.
2Manufacturing precision
If a rigid scrubbing tool is used to apply pressure to the gutter surface, then aggressive cleaning is achieved, but the tool cannot conform to the contoured surface resulting in poor contact
Solution Approach 1:
The scrubbing pad is made from flexible foam material that can deform and conform to the contoured surface of the gutter. This flexibility allows the pad to make 100% contact with the ogee-curve profile while maintaining the ability to apply aggressive scrubbing pressure when force is applied by the user. The flexible nature ensures uniform pressure distribution across the entire contact surface.
3Strength
If a closed cell sponge is used for the scrubbing pad, then the pad is structurally strong, but it absorbs excessive cleaning solution and sticks to the gutter surface
Solution Approach 1:
The scrubbing pad is made from open cell foam material which has a porous structure that allows cleaning solution to pass through rather than being absorbed and retained. This prevents the pad from becoming saturated and sticking to the gutter surface. The open cell structure maintains structural integrity while enabling efficient fluid drainage and preventing excessive absorption that would cause sticking.
Data Source
AI summary
A scrubber for rain gutters with a scrubbing pad having a profile complementary to the profile of the outside side face of the gutter. The scrubbing pad is formed of a open cell natural or synthetic sponge and is attached to a substantially flat backing plate and makes substantially 100% surface contact with the outside side face of the rain gutter. The scrubbing pad overlaps a flange at the top of the outside side face of the gutter and overlaps a bottom of the rain gutter at the bottom of the outside side face. The scrubber is guided by the scrubbing pad along the rain gutter in a straight line by the overlapping portions of the scrubbing pad as the scrubber is moved back and forth along the rain gutter.