# US 8,464,405 B2 · Jewelry clasp

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- Number: US 8,464,405 B2
- Document ID: US8464405B2
- Status: Granted
- Kind: B2
- Application number: 13/059,421
- Filed: 2010-01-29
- Published: 2011-10-06
- Granted: 2013-06-18
- Earliest claimed: 2010-01-29
- Assignees: Kabushiki Kaisha Mikimoto
- Applicants: Yukiko Takeuchi
- Inventors: Yukiko Takeuchi
- Web page: https://patentgrep.com/patent/US8464405B2

## CPC

- A44C 5/209: {Fasteners specially adapted for necklaces or bracelets made of pearls}
- Y10T 24/3904: Bead chain fasteners
- Y10T 24/44538: Integral locking-means
- Y10T 24/45152: Each mating member having similarly shaped, sized, and operated interlocking or intermeshable face
- Y10T 24/4745: End clasp
- A44C: PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A clasp according to an embodiment of the invention has a first annular body and a second annular body, the first annular body extending along an outer surface on one side of a semispherical portion of the spherical jewelry product, and the second annular body extending along an outer surface on the other side of the semispherical portion of the spherical jewelry product. In the case where two adjacent clasps are used so as to form a pair and in the case where the pair of clasps are closed, the shape of the proximal end of each of the first and second annular bodies is configured such that the proximal end in one clasp extends so as to pass through the inside of the other clasp and such that the proximal end in the other clasp extends so as to pass through the inside of one clasp.

## Claims

### Claim 1

A jewelry clasp comprising a plurality of clasp each capable of embracing a spherical jewelry product, each clasp comprising:
a first annular body and a second annular body, the first annular body capable of being disposed on or above an outer surface of a semispherical portion of one side of the spherical jewelry product when the spherical jewelry product is embraced, and the second annular body capable of being disposed on or above an outer surface of the semispherical portion of the other side of the spherical jewelry product when the spherical jewelry product is embraced;
a shaft connecting proximal ends of the first and second annular bodies to each other so that the first and second annular bodies swing relative to each other between a closed state in which the spherical jewelry product is embraced and an opened state in which the spherical jewelry product can be removed; and
a locking section that releaseably locks swinging ends of the first and second annular bodies together when the first and second annular bodies are in the closed state;
wherein when two adjacent clasps form a pair and when the pair of clasps are closed, a shape of the proximal ends of each of the first and second annular bodies is configured so that a proximal end of one clasp extends to pass through an inside of the other clasp and so that a proximal end of the other clasp extends to pass through the inside of the one clasp.

### Claim 2 (depends on 1)

The jewelry clasp according to claim 1, wherein the proximal ends of each of the first and second annular bodies extend linearly to have a narrow width; and wherein each of the first and second annular bodies has an intermediate portion that extends from the swinging end to define a rounded shape.

### Claim 3 (depends on 2)

The jewelry clasp according to claim 2, wherein when each of the first and second annular bodies are opened onto a plane, each of the first and second annular bodies define a droplet-like shape.

### Claim 4 (depends on 1)

The jewelry clasp according to claim 1, wherein any one of the first and second annular bodies has a connector to which an end of a line of the spherical jewelry products is connected, so that the spherical jewelry products extend thereform as string.

### Claim 5

A jewelry clasp that is capable of embracing a spherical jewelry product, the clasp comprising:
a first annular body and a second annular body, the first annular body capable of being disposed on or above an outer surface of a semispherical portion of one side of the spherical jewelry product when the spherical jewelry product is embraced, and the second annular body capable of being disposed on or above an outer surface of another semispherical portion on the other side of the spherical jewelry product when the spherical jewelry product is embraced;
a shaft connecting proximal ends of the first and second annular bodies to each other so that the first and second annular bodies swing relative to each other between a closed state in which the spherical jewelry product is embraced and an opened state in which the spherical jewelry product can be removed; and
a locking section that releaseably locks swinging ends of the first and second annular bodies together when the first and second annular bodies are in the closed state.