At a glance
| Patent number | CN206216564U (application CN201621310673) |
| Type | China utility model (实用新型) - protects product shape and structure |
| Original title | Hardware wrench (一种五金扳手) |
| Patent owner | Jinyun County Osaka Xida Packaging Co., Ltd. (缙云县阪喜达包装有限公司) |
| Inventor | Not disclosed in the publication |
| Filing date | 2016-12-01 |
| Grant date | 2017-06-06 |
| Status (China) | Lapsed - terminated for non-payment of annual fees (recorded 2018-11-16) |
| Patent family | Chinese filings only - no US, European, Japanese, PCT or other filings listed |
| Cited by | 2 later documents |
| Source | Google Patents (search for CN206216564U) |
What the claims cover, in plain language
Claim 1 - a wrench with a handle, an adapter sleeve at its lower end and a connector hub at its upper end. The hub has first, second and third connecting grooves (left, top, right). A threaded post with an internal-hex head fits on the left/top side, and a threaded post with a driving head fits on the right. The driving head has a pin with a worm gear inside, a fixed jaw and a moving jaw.
Claim 2 - an anti-slip sleeve on the lower handle. Claim 3 - a fixing seat where the handle meets the hub. Claim 4 - a magnet inside the hub. Claim 5 - a divider between the hex head and its threaded post. Claim 6 - internal threads in all three connecting grooves.
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 it lapsed for non-payment of annual fees (recorded in 2018). It no longer restricts anyone - in China or elsewhere.
Before production, keep in mind:
- Other patents may exist. Modular and interchangeable-head wrenches are made by established tool brands with US patents. Use your own head connection and styling and have a freedom-to-operate (FTO) search done by a US patent attorney before volume production.
Customization and manufacturing
What can be customized
| Area | Options |
|---|---|
| Head set | Adjustable jaw, hex heads in several sizes, open-end or box-end heads, bit holder |
| Head joint | Thread size and locking method - to be engineered for the torque target |
| Size | Handle length and jaw capacity - to be confirmed in design |
| Steel | Chrome-vanadium or carbon steel, heat treated |
| Grip | TPR or rubber sleeve, brand colors |
| Finish | Chrome, satin or black oxide |
| Packaging | Roll pouch, blow-molded case, blister card |
Things to plan for (US market)
- Torque rating - the threaded joint must be tested at the rated torque; state limits in the instructions.
- Extension use - the pipe sleeve raises the load on the jaws and joint; include a warning and test with the extension.
- Materials and labels - check grip compounds against California Proposition 65; mark the country of origin on the tool.
How a project runs
- Inquiry - head set, size and quantity.
- Design - hub and joint engineering, jaw geometry, grip.
- Prototype - samples for torque, joint and drop tests.
- Pilot run - small batch to check forging, threading and heat treatment.
- Production - volume production, packaging and shipping.
Quantities & timeline
Handle, hub and heads are forged or machined steel parts with heat treatment; the grip needs a mold. Send us your head set, sizes, quantity and target price and we will reply with options.
Patent drawings
Drawing reproduced from the public patent document for reference.
