At a glance
| Patent number | CN205795062U (application CN201620514446) |
| Type | China utility model (实用新型) - protects product shape and structure |
| Original title | Zipper with upper and lower rows joined together (一种上下互拼的拉链) |
| Patent owner | Fujian SBS Zipper Science and Technology Co., Ltd. |
| Inventors | Hu Yuansheng, Zhang Tian |
| Filing date | 2016-05-31 |
| Grant date | 2016-12-14 |
| Status (China) | Expired - a China utility model lasts at most 10 years from filing; the term ended on 2026-05-31 |
| Patent family | Chinese filings only - no US, European, Japanese, PCT or other filings listed |
| Cited by | 9 later documents |
| Source | Google Patents (search for CN205795062U) |
What the claims cover, in plain language
Claim 1 - a zipper with teeth fixed on tapes in upper and lower rows, the lower row being the upper row turned over 180 degrees; each tooth has a cusp and a socket, and the cusps of the two rows interlock with the sockets. The slider has upper and lower plates with a divider joining the left side of the upper plate to the right side of the lower plate, forming separate tape slots and entries for the two rows, and the plates’ inner faces slope to form a meshing cavity that narrows from the entries to the exit.
Claims 2-4 - further details described in the patent, including how the tapes are fixed to the rows and the meshing cavity width matching the tooth width.
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 expired, so it no longer restricts anyone in China either. It has no US or other foreign counterpart.
Before production, keep in mind:
- Other patents may exist. Zipper teeth and sliders are actively patented by the large zipper makers in the US. Have a freedom-to-operate (FTO) search done by a US patent attorney before volume production.
- Engineering. Lateral strength, slider travel and wear must be tested; the patent gives no strength figures.
Customization and manufacturing
What can be customized
| Area | Options |
|---|---|
| Teeth | Molded plastic (POM) or metal; size gauge - to be confirmed in design |
| Tapes | Polyester, recycled polyester, water-repellent coatings |
| Slider | Die-cast zinc alloy, custom pull shapes and logos |
| Finishes | Colors, metallic plating, matching tape and teeth |
| Types | Closed-end, open-end (separating) or two-way versions |
| Supply | Chain by the meter or finished zippers to length |
Things to plan for (US market)
- Children’s apparel - zippers on children’s products need CPSIA lead and phthalate compliance, and pulls must not create choking or entrapment hazards.
- Strength testing - brands usually specify ASTM D2061 zipper strength tests.
- Materials - check plating and dyes for California Proposition 65 substances.
How a project runs
- Inquiry - zipper type, size, materials and quantity.
- Design - tooth geometry, slider and pull.
- Prototype - sample chain and sliders for strength and smoothness tests.
- Pilot run - short production run for garment or bag trials.
- Production - volume production, packaging and shipping.
Quantities & timeline
The teeth and slider need precision molds or dies. Send us your zipper type, size, materials, quantity and target price and we will reply with options.
Patent drawings
Drawings reproduced from the public patent document for reference.
