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Patent Information & Production OptionsNesting Children's Table and Chair Set with Tool-Free Snap Connection · Patent CN208403879U

Patent CN208403879U: bibliographic data, legal status, family, a plain-language reading of the claims, plus customization, US compliance points and how a manufacturing project runs.

At a glance

Patent numberCN208403879U (application CN201820257822)
TypeChina utility model (实用新型) - protects product shape and structure
Original titleA kind of Combined type children tables and chairs (一种组合式儿童桌椅)
Patent ownerIndividual
InventorsWang Yan
Filing date2018-02-13
Grant date2019-01-22
Status (China)Lapsed - terminated for non-payment of annual fees (recorded 2025-02-14)
Patent familyChinese filings only - no US, European, Japanese, PCT or other filings listed
Cited by8 later documents
SourceGoogle Patents (search for CN208403879U)

What the claims cover, in plain language

Claim 1 - A combination children’s table and chair including a seat (2) and a support base (1). The seat is detachably connected to the support base, and the support base forms an accommodating chamber (Y) capable of receiving the seat inside it.

Claim 2 - The support base includes at least two sub-support bases distributed along the longitudinal direction, each detachably connected to the other. Claim 3 - Specifically, there are two sub-support bases: a first sub-support base (14) and a second sub-support base (15). The second sub-support base sits between the first sub-support base and the seat. The first sub-support base has an accommodation space (X) to hold the second sub-support base, and the second sub-support base contains the accommodating chamber (Y) for the seat. Claim 4 - The support base includes a panel (A) usable as a desk or chair, and a support portion (B) that contains the accommodating chamber. Claims 5-8 - Detail the tool-free connection. The upper edge (16) of the support base is a C-shaped structure with a longitudinal flange (11) containing a card slot (111). The seat has an integrally formed elastic fastener (21) comprising a first clamping part (211) with a protrusion, a second clamping part (212) with an inclined slope, and an interconnecting piece (213). The fastener engages the card slot and a lateral flange (12) to lock the seat and prevent longitudinal sliding. Claim 9 - A positive stop strip (13) on the upper edge forms a guide and limit slot (L) with the longitudinal flange to direct the seat during installation. Claim 10 - Mentions additional detachable components such as a service plate (4) and a foot pedal (5).

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 only in China and is currently lapsed due to non-payment of annual fees, so it no longer restricts anyone in China. It has no US or other foreign counterpart.

Two points to settle early:

  • Other patents may exist. The children’s furniture and modular seating field is actively patented. Companies such as Kids2, Inc. and Hannie Ab hold later US and international patents (e.g., US11426008B2, US11723477B2, WO2022093632A1, WO2024132144A1) that cite this document, indicating ongoing innovation in related structural designs. A freedom-to-operate (FTO) review focusing on the specific snap-fit geometry and nesting profiles is required before starting production.
  • Elastic fastener fatigue. The integrally formed elastic piece relies on the base material’s flexibility. Material selection must ensure the fastener survives repeated assembly cycles without cracking, especially in varying temperatures.

Customization and manufacturing

What can be customized

AreaOptions
DimensionsOverall seat width, depth, and base height to be confirmed in design
MaterialsPolypropylene (PP), high-density polyethylene (HDPE), or ABS for molding elasticity and impact strength
ColorsSolid colors, two-tone combinations, or custom brand colors
Surface finishMatte, gloss, or textured surfaces to reduce visible scratches
AccessoriesAddition of the service plate, foot pedal, or safety catch described in the patent
GraphicsMold-in color patterns or applied decals for character branding

Things to plan for (US market)

  • CPSC 16 CFR 1232 - Safety standard for children’s folding and non-folding chairs and stools, covering stability, entrapment, and sharp edges.
  • ASTM F2613 - Standard consumer safety specification for children’s chairs and stools.
  • CPSIA (Consumer Product Safety Improvement Act) - Requires testing for lead in surface coatings and substrates, as well as phthalate limits for children’s products.
  • California Proposition 65 - Chemical screening for plastics and colorants used in the molding process.

How a project runs

  1. Inquiry - Define target age group, dimensions, materials, and order quantities.
  2. Design and engineering - Draft 3D models based on the patent’s nesting and snap-fit geometry, adjusting wall thicknesses for the chosen plastic resin.
  3. Prototyping - CNC machine or 3D print initial samples to verify that the elastic fastener engages the card slot correctly and the seat nests smoothly into the accommodating chamber.
  4. Testing - Conduct stability, load, and cycle tests per ASTM and CPSC standards; adjust the mold design if the fastener shows stress whitening or failure.
  5. Production - Cut steel for injection molds, run pilot batches, perform final quality checks, and pack the nested sets into cartons.

Quantities & timeline

Manufacturing this product requires precision injection molds for the seat, the sub-support bases, and the panel. The elastic fastener must be molded integrally with the seat, meaning the mold’s gating and cooling channels must preserve the material’s flexibility. Certification testing for children’s furniture involves multiple physical and chemical assessments. Send us your target dimensions, material preferences, estimated quantity, and required certifications, and we will reply with options.

Patent drawings

Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 1
Fig. 1 - Structural schematic diagram of the utility model embodiment.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 2
Fig. 2 - Structural schematic diagram at another visual angle of the utility model embodiment.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 3
Fig. 3 - Structural schematic diagram of support base installation process.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 4
Fig. 4 - Structural schematic diagram when seat is installed to support base.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 5
Fig. 5 - Usage state diagram of the first sub-support base and the second sub-support base.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 6
Fig. 6 - Another use state of the first sub-support base and the second sub-support base.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 7
Fig. 7 - Usage state diagram of seat and the second sub-support base.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 8
Fig. 8 - Structural schematic diagram that the second sub-support base of the chair back is equipped.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 9
Fig. 9 - Stereogram exploded view of Combined type children tables and chairs.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 10
Fig. 10 - Enlarged drawing in Fig. 8 at G.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 11
Fig. 11 - Enlarged drawing in Fig. 7 at F.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 12
Fig. 12 - Structural schematic diagram when Combined type children tables and chairs storage and transportation.
Nesting Children's Table and Chair Set with Tool-Free Snap Connection - Patent Fig. 13
Fig. 13 - Stereogram exploded view of Fig. 9.

Drawings reproduced from the public patent document for reference.

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This page is based on the public patent document CN208403879U, assigned to Individual. IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.