EP0702910B1 - Corps creux à parois minces fait d'un métal ou d'un alliage précieux pour utilisation comme article de bijouterie - Google Patents

Corps creux à parois minces fait d'un métal ou d'un alliage précieux pour utilisation comme article de bijouterie Download PDF

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Publication number
EP0702910B1
EP0702910B1 EP95115102A EP95115102A EP0702910B1 EP 0702910 B1 EP0702910 B1 EP 0702910B1 EP 95115102 A EP95115102 A EP 95115102A EP 95115102 A EP95115102 A EP 95115102A EP 0702910 B1 EP0702910 B1 EP 0702910B1
Authority
EP
European Patent Office
Prior art keywords
hollow body
precious metal
alloy
precious
jewel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95115102A
Other languages
German (de)
English (en)
Other versions
EP0702910A2 (fr
EP0702910A3 (fr
Inventor
Wilfried Stalling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOSEF Eberle GmbH and Co KG
Original Assignee
JOSEF Eberle GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JOSEF Eberle GmbH and Co KG filed Critical JOSEF Eberle GmbH and Co KG
Publication of EP0702910A2 publication Critical patent/EP0702910A2/fr
Publication of EP0702910A3 publication Critical patent/EP0702910A3/fr
Application granted granted Critical
Publication of EP0702910B1 publication Critical patent/EP0702910B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments

Definitions

  • the invention relates to a hollow body made of a precious metal or a precious metal alloy for use as jewelry or jewelry.
  • Such jewelry are known from EP-A-0195132. They are produced by electroplating, by electrolytically depositing the precious metal on an electrically conductive or electrically conductive shaped core that has the spatial contour of the piece of jewelry, and after the desired layer thickness has been reached, the material of the shaped core is removed from the hollow body by chemical or thermal means.
  • electroplating by electrolytically depositing the precious metal on an electrically conductive or electrically conductive shaped core that has the spatial contour of the piece of jewelry, and after the desired layer thickness has been reached, the material of the shaped core is removed from the hollow body by chemical or thermal means.
  • electroforming has become common for this process.
  • the electroforming process has the advantage that hollow pieces of jewelry of almost any shape with thin walls, i. H. with economical use of precious metals, can be manufactured inexpensively.
  • this advantage is associated with the disadvantage that the pieces of jewelry have a low mechanical stability.
  • EP-A-0195132 the wall thickness of the hollow body in the particularly stressed areas, namely where attachment eyes, connecting links or connecting links, brochures, lugs, hooks, fuses or the like are required by additional ones Reinforce precious metals order;
  • the noble metal is deposited in a smaller layer thickness on the mandrel to be coated or deposited to form predetermined breaking points, so that the wall initially weakened in this way is subsequently easily opened and a metallic reinforcing part is soldered in or inserted in some other way can.
  • This procedure is complex and partially nullifies the actual advantage of the electroforming process, the inexpensive production and the precious metal savings.
  • a metallic functional part for example a part of a clasp
  • the mold core to be electrolytically coated, which consists of the same noble metal material as the outer wall of the hollow body and in some cases emerges from the mold core material, so that the functional part connects with the resulting outer wall of the hollow body during the electrolytic metal deposition.
  • a functional part can act like a strut and thereby stabilize the hollow body in some way, but without eliminating the disadvantage that the outer wall of the hollow body against mechanical Damage remains sensitive.
  • buttons and buckles which consist of a base part and a metal cap fastened to this base part by fitting and flanging or soldering and whose metal cap has a recess which is intended to receive an enamel coating, with asbestos cardboard or a similar soft, pliable and fireproof material to fill in to allow the enamel to burn in and the metal cap to be soldered to the base.
  • the present invention has for its object to show another way how such thin-walled jewelry can be stabilized in a simple manner without a supporting core and without additional use of precious metals.
  • real pieces of jewelry which are produced as thin-walled hollow bodies are stabilized in that one or more flat indentations are provided in the outside of the hollow body, which are delimited by a border and in which there is a layer of an enamel or a lacquer, the use of an email is preferred.
  • the thin precious metal wall is stabilized by an enamel application
  • the goldsmith also opens up a further design option with the enamel order, even with thin-walled jewelry made by electroforming, which was previously only possible with jewelry made from cast or cast Precious metal existed where the necessary recesses with their borders were cast from the start or formed by eroding, milling or the like, which is fundamentally not possible with thin-walled electroforming parts.
  • electroforming parts the flat depressions or indentations can be formed by providing them in the mold core from the outset, the surface of which is imaged by the electrolytic deposition process.
  • the border that delimits the indentation also limits the spread of the enamel or lacquer, which cannot flow over the border.
  • Low-melting enamels which do not unduly stress the thin wall of the hollow body during melting, are particularly suitable. They can be applied in powder form and processed efficiently in an oven, for example in a small continuous oven.
  • the border preferably encloses a flat bottom of the indentation, which is particularly favorable for a flat, decorative design, but on the other hand also facilitates the application of enamel. Additional profiles, such as scoring, are not required to stabilize the hollow body.
  • the hollow bodies can have a conventional structure; the mold core can be melted out as usual or otherwise removed and the hollow body can accommodate any mechanics, for example a closing part or fastening part for an eyelet, and also reinforcements for particularly stressed areas, as disclosed in DE-C-3918920.
  • the clasp 1 which is attached to a pearl necklace 2, has a hollow body 3 of oval outline. It is a flat hollow body with a slightly curved peripheral wall 4, which connects two side walls 5 and 6 to one another, which run essentially parallel to one another and both have a flat indentation 7 and 8, respectively, which are formed by a step-shaped edge 9 and 10 are bordered and delimited.
  • the indentations 7 and 8 have a flat bottom 11 or 12, on each of which an enamel layer 13 or 14 adheres.
  • the clasp is connected to the pearl necklace in a conventional way; the thread 15, on which the beads are lined up, is knotted at one end with a fastening part 16, at the other end 17 with a V-shaped catch spring 17, which is inserted through an opening 18 into the hollow body 3 and at the edge of the opening 18 snaps into place.
  • the wall thickness of the hollow body 3 is shown exaggeratedly thick in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adornments (AREA)

Claims (2)

  1. Corps creux à paroi mince fabriqué à l'aide d'un procédé d'électroformage, constitué par un métal noble ou par un alliage de métal noble, à utiliser comme article de bijouterie ou de joaillerie,
    caractérisé par au moins un renfoncement plat (7, 8) prévu dans le côté externe du corps creux (3) et délimité par un bord (9, 10), dans lequel se trouve une couche (13, 14) d'un émail ou d'une laque.
  2. Corps creux selon la revendication 1, caractérisé en ce que le renfoncement (7, 8) possède un fond lisse (11, 12).
EP95115102A 1994-09-26 1995-09-26 Corps creux à parois minces fait d'un métal ou d'un alliage précieux pour utilisation comme article de bijouterie Expired - Lifetime EP0702910B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434413A DE4434413C1 (de) 1994-09-26 1994-09-26 Dünnwandiger Hohlkörper aus einem Edelmetall oder aus einer Edelmetallegierung zur Verwendung als Schmuck- oder Juwelierware
DE4434413 1994-09-26

Publications (3)

Publication Number Publication Date
EP0702910A2 EP0702910A2 (fr) 1996-03-27
EP0702910A3 EP0702910A3 (fr) 1996-12-27
EP0702910B1 true EP0702910B1 (fr) 2000-04-05

Family

ID=6529257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115102A Expired - Lifetime EP0702910B1 (fr) 1994-09-26 1995-09-26 Corps creux à parois minces fait d'un métal ou d'un alliage précieux pour utilisation comme article de bijouterie

Country Status (3)

Country Link
EP (1) EP0702910B1 (fr)
AT (1) ATE191319T1 (fr)
DE (2) DE4434413C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4685267A1 (fr) * 2024-07-23 2026-01-28 Richemont International S.A. Composant émaillé pour une pièce d horlogerie ou de joaillerie

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2224892B1 (es) * 2004-07-26 2006-06-01 Clemente Navarro Fabregat, S.A. Procedimiento para la fabricacion de piezas de joyeria y piezas de joyeria obtenida.
ITVI20050097A1 (it) * 2005-04-05 2006-10-06 Worldgem Brands Gestao E Investimentos Lda Procedimento per la costruzione di oggetti preziosi e prodotti cosi' ottenuti

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE244074C (fr) *
EP0195132A3 (fr) * 1985-03-19 1986-11-20 Juwedor GmbH Procédé de fabrication de bijoux en métaux précieux et bijoux ainsi obtenus
IN174705B (fr) * 1988-09-09 1995-02-18 Daya Ranjit Senanayake
DE9104752U1 (de) * 1991-04-18 1991-06-13 J. Hundt KG, 5657 Haan Dekorelement
GB2263858B (en) * 1992-02-05 1996-07-17 Woolley Jewellers Limited L Jewelry
DE4228716C2 (de) * 1992-08-28 1994-07-21 John Joyce Gewölbte Schmuckplatte und Verfahren zu ihrer Herstellung
DE29500989U1 (de) * 1995-01-23 1995-04-13 Kroll-Vogel, Peter, Mallorca Zier- und Sammelplakette

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4685267A1 (fr) * 2024-07-23 2026-01-28 Richemont International S.A. Composant émaillé pour une pièce d horlogerie ou de joaillerie
CH721994A1 (fr) * 2024-07-23 2026-01-30 Richemont Int Sa Composant émaillé pour une pièce d'horlogerie ou de joaillerie

Also Published As

Publication number Publication date
EP0702910A2 (fr) 1996-03-27
ATE191319T1 (de) 2000-04-15
DE59508123D1 (de) 2000-05-11
EP0702910A3 (fr) 1996-12-27
DE4434413C1 (de) 1996-03-21

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