Classifications

• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
  • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
  • A44C5/18—Fasteners for straps, chains or the like
  • A44C5/20—Fasteners for straps, chains or the like for open straps, chains or the like
  • A44C5/2052—Fasteners provided with at least one push-button acting parallel to the main plane of the fastener and perpendicularly to the direction of the fastening

Definitions

• the present invention relates to a clasp for a piece of jewelry, in particular a clasp for connecting the two ends of a bracelet.
• Figure 1 is a sectional view along line A-A of Figure 2 of the clasp, the latter being in the process of opening or closing.
• FIG. 2 is a side elevation view of the clasp il ⁇ lustré in FIG. 1.
• the clasp according to the invention constitutes a device for coupling the two ends of a flat link, such as a bracelet, comprising a male part 1 fixed to one of the ends of the link and a female part 2 fixed to the other end of the link to be assembled.
• the male part 1 of the coupling or clasp comprises a tubular element 3 of square or rectangular section comprising on one of its faces a longitudinal rib 4 having a bore 5 parallel to the tax of the tubular part 3.
• Each bore is provided with its ends of a recess 6 of larger diameter.
• this rib is provided with a longitudinal slot 7.
• the end of a bracelet (not shown) can thus enter the bore 5 through the slot 7 and be held in this bore by any suitable means, such as a bar, rod or threaded tube fitted with end screws accommodating in recesses 6 etc.
• the tubular part 3 is closed at its two ends by plugs 8 held in position by pins 9.
• the ends of these plugs 8 have in illustrated embodiment, the shape of a square base pyramid.
• the internal face of the plugs 8 comprise notches 10 serving for positioning and holding a leaf spring 11 extending in the space included inside the tubular element 2 between the plugs 8.
• the face of the tubular part 3 opposite to that comprising the rib 4 has a central opening 12 having the form of a slot and two male coupling members located on either side of this slot 12.
• Each coupling member male is fixed to the tubular piece 3 by a foot 13 surrounded by a centering and positioning disc 14 from which a rod 15 emerges perpendicularly ending in a retaining member 16 having a domed domed front face and a flat retaining rear face 17.
• the female part 2 of the coupling or clasp comprises a tubular piece 3 similar to that of the male part 1, comprising on one of its faces a longitudinal rib 4, 5, 6 and 7 for fixing the other end of the bracelet .
• each slide 18,19 tending to be separated from one another by a spring 20 located between them.
• the axial stroke of each slide 18,19 is limited by a pin 21,22 cooperating with a milling 23,24 respectively of the slide.
• Each slide comprises a recess 25 and a retaining spout 26.
• the face of the tubular part 3 opposite to that having the rib 4 - 7 has two circular openings 27 of corresponding diameter. corresponding to that of the retaining members 16 and of the discs 14. Between these openings is a truncated-conical guide plate 28 whose dimensions, length and thickness, correspond to those of the slot 12 of the male part 1 .
• the user To cause the clasp to open, the user must simultaneously move the sliders 18,19 in the direction of one another by pressing on the ends 29,30 having for example the same shape as the plugs 8, to release the two retaining members 16. From this ins ⁇ as the leaf spring 11 acting on the front edge of the guide plate pushes the tubular parts 3 and the clasp is open.
• This clasp has several advantages, the main ones being: a. It is simple and relatively inexpensive to manufacture. b. It is not very bulky. vs. It is particularly easy to use. d. Its untimely and unwanted opening is highly improbable, the two sliders having to be actuated simultaneously.
• the clasp can be considered in particular the shape of the tubular parts could be cylindrical and not prismatic, similarly the method of fixing the end of the bracelet to the corresponding tubular part could be different.
• the shape of the retaining members 16 can be modified as long as it corresponds to the openings 27 and allows them to cooperate with the spouts 26 of the scissors 18,19.
• the clasp in its illustrated embodiment is more particularly intended to be mounted on a flexible bracelet, for example made of leather or other material which can serve as a support for inlays or for fixing decorations.
• the clasp is fixed to the ends of the bracelet by welding, for example.
• the tubular parts 3 are an integral part of the ends of the bracelet.
• Such a clasp can of course also equip a necklace or any other flexible piece of jewelry intended to be closed on itself.

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Applications Claiming Priority (2)

Publications (1)

Family

ID=4220230

Family Applications (1)

Country Status (2)

Cited By (1)

Citations (3)

• 1989
  • 1989-05-18 CH CH185789A patent/CH674126A5/fr not_active IP Right Cessation
• 1990
  • 1990-03-16 WO PCT/CH1990/000075 patent/WO1990014027A1/fr unknown

Patent Citations (3)

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