One-hand locking bracelet / chain clasp with additional safety catch
The magnetic clasp with a safety catch addresses the issue of clasps coming undone by providing secure, one-handed operation and reduced risk of loss through its symmetrical design and centering prism.
Patent Information
- Application Number
- DE202025002259
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2025-12-11
- Estimated Expiration
- 2035-08-31
AI Technical Summary
Magnetic clasps for bracelets and necklaces often come undone under strain, leading to potential loss, and existing designs are difficult to operate with one hand and lack a secure locking mechanism.
A magnetic clasp with an additional safety catch mechanism, featuring symmetrical halves and a centering prism, allowing one-handed operation and secure locking, which can be retrofitted to existing jewelry.
The solution provides enhanced security and ease of use by ensuring the clasp remains locked under strain and can be operated with one hand, reducing the risk of loss.
Smart Images

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Abstract
Description
• Magnetic clasp with safety catch for jewelry applications. Many magnetic clasps come undone under strain, and the bracelet is lost. Unlike these clasps, this one is secured with an additional safety catch, making it more secure. It can almost always be retrofitted to an existing bracelet. The clasp is attached to the bracelet with two rings. The two magnets and the prism align the two halves of the clasp, centering and locking them together. The clasp can then be snapped into place, regardless of whether it's from above or below, as all three parts are symmetrical. This allows the bracelet to be put on with one hand. This system also allows for a very small clasp. Simple clasps are very difficult to close on your own. Simple magnetic clasps open easily when pulled, and the bracelet can be lost. The additional clasp prevents loss. The clasp is very small and therefore doesn't bother the wrist. On necklaces, its light weight prevents it from constantly slipping down. • The clasp is best made of steel. This improves the conductivity of the magnets. The locking bar must be made of spring steel to ensure consistent engagement. Summary
[0001] This magnetic clasp is for bracelets and necklaces. It can also be retrofitted to almost any bracelet or necklace. The two magnets automatically pull the clasp halves together, while the prism centers them. This allows the bracelet to be put on with one hand. The safety catch can then be locked in place with a single finger. To open, simply push the curved tab upwards and pull the clasp apart.
[0002] One-hand locking bracelet / chain clasp with additional safety catch. Fig. Side view 1 Left half of the closure, 4-sided, fits on envelope. 2 Right-hand closure half, 4-sided, fits on envelope. Three locking clips, suitable for the cover. The clip is the most important part of the patent. 4. Internal magnet. 5 Magnet, part of the centering mechanism. 6. Centering. Fig. Top view 7 holes for bracelet or chain eyelet 8 holes for bracelet or chain eyelet. Fig. Left inside side 9 Magnet Fig. Right interior view 10 Magnet, part of the centering mechanism. Fig. Left interior view 9. Centering. 10 Locking mechanism for safety bracket 11 Curved overhang for opening.
Claims
[1] Magnetic closure according to claim 1, characterized by , that the two parts of the closure, by means of a prism and a deeper one, and by means of a protruding magnet, come together in the correct closed position. [2] Magnetic closure according to claim 3, characterized by The locking bar fits the flap and has a 30°-40° bend on the sides, creating a spring effect. This allows the locking bar to be engaged from either the top or bottom, with the eyelet hook serving as a support for the bar. The hook's locking force is now greater than the magnetic force, making it virtually impossible to lose. The curved overhang at the end of the bar also allows for easy opening.