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Patent Information & Production OptionsSix-Fold Portable Chess Table with Integrated Storage · Patent CN217851794U

Patent CN217851794U: 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 numberCN217851794U (application CN202220742936)
TypeChina utility model (实用新型) - protects product shape and structure
Original titleSix-time folding portable table for playing chess (一种六次折叠便携式对弈用桌案)
Patent ownerIndividual
InventorsZhang Weilin
Filing date2022-04-01
Grant date2022-11-22
Status (China)In force - valid until at most 2032-04-01, subject to payment of annual fees
Patent familyChinese filings only - no US, European, Japanese, PCT or other filings listed
Cited by1 later document
SourceGoogle Patents (search for CN217851794U)

What the claims cover, in plain language

Claim 1 defines the basic structure: a table comprising a first edition block and a second edition block arranged symmetrically. The first block includes hinged tabletop pieces (1, 2) and a layer board cover (3) containing movable layer boards (6). The cover’s length is specified as 1.35 times the length of the tabletop piece. The boards slide such that their combined retracted length equals the cover’s length.

Claim 2 adds storage features: an elastic clamping plate (7) hinged to the movable layer board, and a drawer system consisting of a drawer sleeve (12), a large-size drawer (13), and a hoop board (14) that retains the drawer. The hoop board dimensions are smaller than the drawer’s back wallboard.

Claim 3 details the second edition block: it includes a fourth tabletop piece (4), a central tabletop piece (5), and a lifting frame (8). The frame is shaped like the character “three” and creates two spaces capable of housing folding chairs.

Claim 4 specifies the leg and core structure: a core layer board (9) congruent with the central piece, a welt (10) with specific geometric shapes (bolt-like fronts, wall-like sides), and a table leg mechanism (11).

Claim 5 breaks down the leg mechanism: it uses an outer plate (1101), an inner plate (1102), and belt-shaped guy ropes (1103, 1104) connected via hinges to ensure the legs unfold flat against the ground.

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 in force. Making, selling, or importing products covered by these claims in China requires permission from the patent owner. However, since there is no corresponding US patent, the design itself is not restricted by this specific patent document in the United States.

Two points to settle early:

  • Other patents may exist. Folding furniture is a crowded field. While this specific combination of a “three”-shaped frame with chair storage appears unique to this filing, you should conduct a freedom-to-operate (FTO) review to check for existing US patents covering similar multi-panel folding tables or integrated seat storage mechanisms.
  • Structural integrity. The reliance on hinged plates and belt-shaped guy ropes for leg stability introduces potential wear points. Prototypes must verify that the rope-and-plate mechanism remains taut and safe under repeated folding cycles.

Customization and manufacturing

What can be customized

AreaOptions
MaterialsWood veneer, high-pressure laminate (HPL), or powder-coated aluminum for the panels
DimensionsOverall height and tabletop diameter can be scaled while maintaining the 1.35 ratio for the layer covers
FinishStain, paint, or textured coatings to match brand aesthetics
HardwareType of hinges (concealed vs. exposed) and locking mechanisms for the clamping plate
StorageDepth of the large-size drawer and configuration of the sliding layer boards

Things to plan for (US market)

  • ASTM F1487 - Standard Consumer Safety Performance Specification for Playground Equipment for Public Use (if intended for public parks/schools).
  • CPSC 16 CFR 1500 - Hazardous substances regulations if any finishes contain lead or phthalates.
  • ANSI/BIFMA X5.1 - General purpose office furniture safety tests (relevant if marketed for office breakrooms).
  • California Prop 65 - Warning requirements for certain chemicals in plastics and wood treatments.

How a project runs

  1. Inquiry - Define target dimensions, material preferences, and quantity.
  2. Design Adaptation - Adjust the CAD models to fit chosen materials (e.g., changing hinge specs for heavier wood).
  3. Prototype - Build units to test the six-fold sequence and the chair storage fit.
  4. Pilot Run - Small batch production to refine the assembly line for the leg mechanism.
  5. Production - Mass manufacturing, focusing on precision cutting of the interlocking plates.

Quantities & timeline

The complex geometry of the “three”-shaped frame and the interlocking plates requires CNC machining or laser cutting rather than simple stamping. Injection molding may be needed for the plastic guy-rope connectors. Tooling costs are moderate due to the variety of parts. Send us your dimensions, material choice, finish, estimated quantity and target price and we will reply with options.

Patent drawings

Six-Fold Portable Chess Table with Integrated Storage - Patent Fig. 1
Fig. 1 - Overview of the folded table structure.
Six-Fold Portable Chess Table with Integrated Storage - Patent Fig. 2
Fig. 2 - The table in its unfolded, ready-to-use state.
Six-Fold Portable Chess Table with Integrated Storage - Patent Fig. 3
Fig. 3 - Detail of the layer board cover and sliding mechanism.
Six-Fold Portable Chess Table with Integrated Storage - Patent Fig. 4
Fig. 4 - Cross-section showing the central lifting frame and chair storage voids.
Six-Fold Portable Chess Table with Integrated Storage - Patent Fig. 5
Fig. 5 - Exploded view of the leg mechanism with outer and inner plates.
Six-Fold Portable Chess Table with Integrated Storage - Patent Fig. 6
Fig. 6 - Connection detail of the belt-shaped guy ropes.
Six-Fold Portable Chess Table with Integrated Storage - Patent Fig. 7
Fig. 7 - View of the drawer sleeve and hoop board assembly.
Six-Fold Portable Chess Table with Integrated Storage - Patent Fig. 8
Fig. 8 - Final assembled profile of the collapsed unit.

Drawings reproduced from the public patent document for reference.

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  2. 2 Product brief · now How it works, uses and options written up
  3. 3 Prototype First samples for buyers to review
  4. 4 Pilot run Small first batch for launch customers
  5. 5 Volume production Repeat orders at scale

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This page is based on the public patent document CN217851794U, 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.