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Patent Information & Production OptionsHandheld Automatic Bubble Tube with Mechanical Liquid Feed · Patent CN110812859B

Patent CN110812859B: 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 numberCN110812859B (application CN201911153734)
TypeChina invention patent (发明专利) - protects product shape, structure and method
Original titleHandheld automatic bubble tube (一种手持式自动泡泡管)
Patent ownerIndividual
InventorsHu Jianchao, Huang Wenjia
Filing date2019-11-22
Grant date2021-12-07
Status (China)Lapsed - terminated for non-payment of annual fees (recorded 2024-06-25)
Patent familyChinese filings only - no US, European, Japanese, PCT or other filings listed
Cited by0 later documents
SourceGoogle Patents (search for CN110812859B)

What the claims cover, in plain language

Claim 1 describes a handheld automatic bubble tube comprising a liquid storage handle, a connecting cover rotatably mounted on its upper end, and a connecting pipe fixed to the cover. A bubble assembly at the pipe’s end includes a bubble outlet nozzle, an air guide assembly, and a film scraping rod. Inside the handle, a liquid feeding assembly uses a spiral liquid guide rod with a spiral blade, positioned eccentrically. A ratchet wheel on the rod engages an inner ratchet wheel on the handle wall, ensuring liquid moves into the connecting pipe only during unidirectional rotation. The air guide assembly features a mounting frame with a connecting sleeve, an air guide shell, and a balance end. Air entering an eccentric air inlet pushes a windward fan to spin in one direction, blowing air out through an air outlet pipe toward the nozzle. The balance end, weighing less than the nozzle side, includes a balance plate, wing plate, and block to stabilize rotation. A flexible liquid storage bag inside the handle enables use at any angle.

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 has lapsed due to non-payment of annual fees (recorded 2024-06-25), so it no longer restricts anyone in China either. It has no US or other foreign counterpart.

Two points to settle early:

  • Other patents may exist. The toy industry features many active patents covering bubble-generating mechanisms, ratchet drives, and specific nozzle shapes. While no foreign patents cite this specific document, a freedom-to-operate (FTO) review of the mechanical liquid feed and air guide features is needed before tooling to ensure no active US patents are infringed.
  • Leak prevention. The seal between the rotating cover and the handle, along with the integrity of the flexible liquid storage bag, must be validated for shipping and rough play to prevent bubble solution from leaking onto retail shelves or into packaging.

Customization and manufacturing

What can be customized

AreaOptions
Handle shape and sizeErgonomic grips, character shapes, length to be confirmed in design
Colors and graphicsInjection-molded colorants, pad printing, water transfer decals
Bubble outlet nozzleSingle large hole or multi-hole grids for different bubble sizes
MaterialsABS, PP, or POM for gears and rods; TPU or PE for the flexible bag
PackagingBlister cards, window boxes, or bulk display trays
Balance weightsAdjusted in design based on final nozzle and fan materials

Things to plan for (US market)

  • CPSC 16 CFR 1501 - Small parts regulation; the toy must not present a choking hazard for children under 3 years old.
  • ASTM F963 - Standard consumer safety specification for toy safety, covering mechanical hazards, sharp edges, and material integrity.
  • CPSIA Section 101 - Lead content limits in substrates and surface coatings for children’s products.
  • California Prop 65 - Bubble solutions and plastic components must be screened for listed chemicals.

How a project runs

  1. Inquiry - target age group, bubble style, quantity, and packaging needs.
  2. Design - CAD modeling of the ratchet mechanism, spiral rod pitch, fan blade angle, and balance weights.
  3. Prototype - 3D printed or CNC machined samples to test liquid flow rate, rotation smoothness, and bubble formation.
  4. Pilot run - injection molding trials, ultrasonic welding of the covers, assembly of the flexible bags, and drop testing.
  5. Production - mass molding, printing, sub-assembly of the air guide and ratchet components, filling instructions, and final packing.

Quantities & timeline

The spiral liquid guide rod, ratchet wheels, and windward fan require precise injection molds to maintain tight tolerances for the one-way liquid feed. The flexible liquid storage bag needs dedicated heat-sealing dies, and the connecting cover requires ultrasonic welding fixtures. ASTM F963 mechanical and chemical testing will dictate part of the validation schedule. Send us your target age group, preferred materials, order quantity, and packaging requirements and we will reply with options.

Patent drawings

Handheld Automatic Bubble Tube with Mechanical Liquid Feed - Patent Fig. 1
Fig. 1 - Overall view of the handheld automatic bubble tube.
Handheld Automatic Bubble Tube with Mechanical Liquid Feed - Patent Fig. 2
Fig. 2 - Internal structure of the handle and connecting cover.
Handheld Automatic Bubble Tube with Mechanical Liquid Feed - Patent Fig. 3
Fig. 3 - Cross-sectional view of the assembly.
Handheld Automatic Bubble Tube with Mechanical Liquid Feed - Patent Fig. 4
Fig. 4 - Detail of the bubble assembly and air guide.
Handheld Automatic Bubble Tube with Mechanical Liquid Feed - Patent Fig. 5
Fig. 5 - Exploded view of the mounting frame and fan.
Handheld Automatic Bubble Tube with Mechanical Liquid Feed - Patent Fig. 6
Fig. 6 - Structure of the film scraping rod and turntable.
Handheld Automatic Bubble Tube with Mechanical Liquid Feed - Patent Fig. 7
Fig. 7 - Detail of the ratchet and spiral liquid guide rod.
Handheld Automatic Bubble Tube with Mechanical Liquid Feed - Patent Fig. 8
Fig. 8 - View of the balance end components.

Drawings reproduced from the public patent document for reference.

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  1. ✓ Patent vetted China-only family and legal status checked
  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 CN110812859B, 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.