At a glance
| Patent number | CN205254927U (application CN201620000017) |
| Type | China utility model (实用新型) - protects product shape and structure |
| Original title | Multifunctional hammer (一种多功能榔头) |
| Patent owner | Ma Xiaoying (马晓英), individual |
| Inventors | Ma Xiaoying, Zhang Jiaqiang |
| Filing date | 2016-01-01 |
| Grant date | 2016-05-25 |
| Status (China) | Lapsed - terminated for non-payment of annual fees (recorded 2018-02-16) |
| Patent family | Chinese filings only - no US, European, Japanese, PCT or other filings listed |
| Cited by | 1 later document |
| Source | Google Patents (search for CN205254927U) |
What the claims cover, in plain language
Claim 1 - a hammer with a handle and a head; a wedge-shaped part formed in one piece with one end of the head; a T-slot for holding a nail on the top face of the head; a groove as long as the handle, with a pivot rod at the end away from the head that carries a flat screwdriver bit, a star screwdriver bit and a blade, each shorter than the groove.
Claim 2 - anti-slip texture on the handle. Claim 3 - a cover over the T-slot. Claim 4 - a rubber pad on the end face of the wedge. Claim 5 - several LED lights on the handle.
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. Multi-tool hammers, nail-starter grooves and magnetic nail holders are made by many tool brands, some with US patents or design patents. Use your own 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 weight | Light household sizes (for example 8-16 oz) - to be confirmed in design |
| Nail slot | Slot sizes for common nail gauges; optional magnet; optional cover |
| Fold-out tools | Choice of bits (flat, Phillips, Torx, hex) and blade or no blade |
| Handle | Steel, aluminum or fiberglass core with molded grip; anti-slip pattern |
| Peen | Wedge peen with or without rubber pad; claw version possible |
| Finish & colors | Polished, black or painted head; brand-color grips |
| Branding & packaging | Logo on handle and head, blister card, gift box, kit insert |
Things to plan for (US market)
- Blades - check retailer and shipping rules for tools with folding blades; a blade-free version avoids this.
- Materials - check grip compounds against California Proposition 65; mark the country of origin on the tool.
- Durability - head-to-handle strength and the pivot of the fold-out tools need testing.
How a project runs
- Inquiry - head weight, tool set, handle material and quantity.
- Design - slot geometry, groove and pivot, grip design.
- Prototype - samples for strike, nail-holding and fold-out tests.
- Pilot run - small batch to check forging, heat treatment and finish.
- Production - volume production, packaging and shipping.
Quantities & timeline
The head needs forging or casting dies, the handle needs molds, and the bits are standard parts or simple stampings. Send us your target weight, tool set, quantity and target price and we will reply with options.
Patent drawings
Drawings reproduced from the public patent document for reference.
