Rotary Gap Cleaning Brush for Woven Mats

Patent & Production

At a glance

What the claims cover, in plain language

Claim 1 defines a gap cleaning brush comprising a support frame (1), connecting rods (2), and a handle (3). The frame has a central groove (4) housing a cleaning mechanism (8). This mechanism includes a rotating roller (81) with limiting slots (84) and through-holes (87). Inside the roller, a rotation axis (88) supports fixed discs (831) equipped with adhesive posts (836) that extend through the holes. The roller is supported by bearings (85, 823, 826, 834) and support columns (5). A lifting mechanism uses an annular slide rail (833) and rail groove sleeve (835) to manage the roller’s position. Counterweight balls (838) are placed within the fixed discs to stabilize the rotation. The claim specifies the geometric relationship between the posts, holes, and bearings to ensure the roller rotates smoothly while the posts engage with mat gaps.

This is a simplified reading for orientation only. The legal scope is defined by the exact claim wording in the official Chinese document.

What this means for US production

This patent was filed in China and has lapsed, so it no longer restricts anyone in China either. The public record shows no US or other foreign counterpart.

Two points to settle early:

• Other patents may exist. Household cleaning tools are a crowded field. While this specific mechanical arrangement of adhesive posts on a weighted roller appears unique to this filing, similar concepts for “gap cleaning” or “rotary brushes” may be covered by earlier or later US patents. A freedom-to-operate (FTO) review is recommended before mass production to ensure no infringement of existing utility patents in the US market.
• Material Safety. Since the tool contacts bedding and potentially skin, material choices must comply with safety standards for plastics and adhesives.

Customization and manufacturing

What can be customized

Things to plan for (US market)

• FDA Compliance (21 CFR): If marketed for food-contact adjacent surfaces or general hygiene, materials should be FDA-compliant for safety, though this is primarily a household tool.
• CPSC General Requirements: Ensure no sharp edges or pinch points that could cause injury during normal use.
• California Prop 65: Screen plastics and adhesives for restricted chemicals like phthalates or lead.
• ASTM F963: If sold as a toy or if children might interact with it significantly, test for small parts and toxicity.

How a project runs

1. Inquiry - Define target mat types, quantity, and desired aesthetic.
2. Design Adaptation - CAD modeling of the roller and post interaction; adjust hole density and post length.
3. Prototype - 3D print the frame and roller; silicone mold for posts; assemble and test on sample mats.
4. Tooling - Create steel molds for the frame, roller shell, and internal discs.
5. Production - Injection molding, assembly of bearings and posts, quality control testing.

Quantities & timeline

The complexity lies in the multi-part assembly (frame, roller, discs, posts, bearings). Molds for the hollow roller and the intricate disc holders require precision. Assembly involves press-fitting bearings and inserting posts, which adds labor cost. Certification tests for material safety run concurrently with tooling. Send us your target mat dimensions, quantity, and packaging requirements and we will reply with options.

Production notes

Tooling and process

Injection molding is the primary process for the plastic frame, roller shell, and internal discs. The adhesive posts likely require a separate silicone or rubber molding step, possibly involving overmolding or manual insertion. Stamping may be used for metal bearings or shafts if not sourced as standard components.

Cost drivers

Part count likely drives assembly costs; the design has many small internal components (bearings, discs, weights). The number of molds increases with the complexity of the roller’s internal geometry. Material grade affects durability; silicone posts last longer than cheap PVC but cost more. Surface finish on the visible frame impacts perceived value.

Prototyping path

We would typically start with a 3D model to check interference between the posts and the mat gaps. Print the frame and roller bodies for fit and handling. Use CNC or simple tooling for the stressed bearing seats. Assemble a functional sample with off-the-shelf bearings and molded posts to test the rolling action on actual mats.

What we would change before tooling

We would likely simplify the bearing arrangement if possible to reduce assembly steps. Consider integrating the counterweights into the disc mold to eliminate loose parts. Verify that the post retention method withstands repeated twisting forces without pulling out.

Common failure points

Thin walls on the roller may warp under heat or stress. Adhesive posts could detach from the discs if the connection is weak. Water or residue may get trapped in the groove if drainage is poor. Hinge-like movements in the support columns could fatigue over time.

Patent drawings

Drawings reproduced from the public patent document for reference.

Frequently asked questions

How does it clean better than a regular brush?

Regular brushes sweep the surface. This design uses flexible adhesive posts that physically enter the narrow gaps between the mat strips. As you roll the device, the posts grab debris from inside the weave and lift it out, rather than just pushing it around.

Does it work on all types of woven mats?

It is optimized for mats with distinct gaps, such as bamboo slat mats or open-weave rattan. Very tight synthetic weaves or high-pile rugs may not allow the posts to penetrate effectively. The length and stiffness of the posts can be adjusted in custom designs to match specific mat types.

Are the adhesive posts replaceable?

The patent describes a modular internal structure with bearings and slots. In a production version, the roller assembly could be designed to snap apart, allowing users to replace worn posts or clean the internal mechanism. This depends on the final design choices.

Will it damage my mat?

According to the patent, the mechanism relies on gentle engagement with the gaps. The posts are typically made of soft, flexible materials like silicone or rubber. Unlike stiff bristles, they do not scrub the surface aggressively, reducing the risk of fraying or scratching delicate bamboo or rattan fibers.

Is it electric?

No. The device operates entirely mechanically. You push and roll it across the mat; the friction between the mat and the posts causes the internal roller to spin. No batteries or motors are required.

Can this design be made and sold in the US?

The patent was filed in China and has lapsed due to non-payment of fees, and the public record shows no US counterpart, so it does not restrict the design in the US or in China. However, other US patents may cover similar cleaning mechanisms, so we recommend a freedom-to-operate check before volume production.

Are you affiliated with the patent owner?

No. IP2M is an independent design and manufacturing service working from the public patent document.

Request a quote

Click Request a Quote below to see our email address - copy it, or open your email app with a ready-made message. Please mention patent CN109288236B in the subject.

Helpful details to include:

• Your company and channel (home goods brand, mat manufacturer, e-commerce seller)
• Target mat types (bamboo, rattan, synthetic) and typical gap width
• Quantity needed for initial order
• Customization requests (color, logo, handle style)
• Timeline - when you would like samples and the first shipment

You can also reach us at (332) 203-9997.