EP0646338A1 - Corps creux en métal précieux ou en alliage de métaux précieux utilisé comme bijou ou article de bijouterie - Google Patents

Corps creux en métal précieux ou en alliage de métaux précieux utilisé comme bijou ou article de bijouterie Download PDF

Info

Publication number
EP0646338A1
EP0646338A1 EP94115512A EP94115512A EP0646338A1 EP 0646338 A1 EP0646338 A1 EP 0646338A1 EP 94115512 A EP94115512 A EP 94115512A EP 94115512 A EP94115512 A EP 94115512A EP 0646338 A1 EP0646338 A1 EP 0646338A1
Authority
EP
European Patent Office
Prior art keywords
hollow body
core
wall
plastic
alloy
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.)
Granted
Application number
EP94115512A
Other languages
German (de)
English (en)
Other versions
EP0646338B1 (fr
Inventor
Wilfried Stalling
Peter Dr. Zaiss
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
Priority claimed from DE4339641A external-priority patent/DE4339641A1/de
Application filed by JOSEF Eberle GmbH and Co KG filed Critical JOSEF Eberle GmbH and Co KG
Publication of EP0646338A1 publication Critical patent/EP0646338A1/fr
Application granted granted Critical
Publication of EP0646338B1 publication Critical patent/EP0646338B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/02—Tubes; Rings; Hollow bodies
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/005—Jewels; Clockworks; Coins

Definitions

  • the invention relates to a hollow body made of a noble metal or a noble metal alloy for use as jewelry or jewelry.
  • pieces of jewelry are known from EP-A-0 195 132. They are produced by electroplating, in that the precious metal is electrolytically deposited on an electrically conductive or electrically conductive shaped core which has the spatial contour of the piece of jewelry and, after the desired layer thickness has been reached, the Material of the mandrel is released from the hollow body by chemical or thermal means.
  • electroplating in that the precious metal is electrolytically deposited on an electrically conductive or electrically conductive shaped core which has the spatial contour of the piece of jewelry and, after the desired layer thickness has been reached, the Material of the mandrel is released from the hollow body by chemical or thermal means.
  • electroforming has become common for this process.
  • This method has the advantage that hollow pieces of jewelry of almost any shape with thin wall thicknesses, ie with economical use of precious metals, can be produced inexpensively.
  • this advantage is linked to the disadvantage that the pieces of jewelry have a low mechanical stability, which in particular in the area where attachment eyes, connecting links or connecting links, brochures, lugs, hooks, securing devices or the like are required on the hollow body due to tensile or bending forces Deformation of the wall of the hollow body causes or the wall thickness is gradually removed by abrasive or rubbing stress and is thereby further weakened.
  • EP-A-0 195 132 to increase the wall thickness of the hollow body in the particularly stressed areas by additional application of noble metal, for example by depositing the noble metal in a smaller layer thickness on the mandrel to be coated or is deposited with the formation of predetermined breaking points, so that the wall initially weakened in this way is subsequently opened slightly and a metallic one Reinforcement part can be soldered or inserted in any other way.
  • This procedure is complex and partially nullifies the actual advantage of the galvanoplastic process, the inexpensive production and the precious metal savings.
  • a metallic functional part e.g. to embed part of a clasp, which consists of the same noble metal material as the outer wall of the hollow body and in places emerges from the mold core material, so that the functional part connects with the resulting outer wall of the hollow body during electrolytic metal deposition.
  • a functional part can act like a strut and thereby stabilize the hollow body to a certain extent, but without eliminating the disadvantage that the outer wall of the hollow body remains sensitive to mechanical damage.
  • the present invention has for its object to show a way how such thin-walled jewelry can be protected against damage in a simpler and cheaper way.
  • the invention is suitable for hollow bodies with or without built-in metallic functional parts. If functional parts are required, they are best embedded in the core during casting or injection molding by inserting it into the negative mold of the hollow body and then filling this mold with the core material, or by inserting it into a plastic or a wax.
  • Figures 1 and 2 show a clasp for jewelry.
  • the clasp has a shape similar to a longitudinally halved banana with a flat bottom 1 and with a bulging over the bottom 1, approximately semicircular in cross section 2, which in the example shown has a cord-like relief for reasons of appearance alone.
  • At one end of the clasp there is an eyelet 3 to which, for example, a chain or necklace can be attached, and at the opposite end there is an opening 4 through which a catch attached to the other end of the chain or necklace enters Interior of the Clasp inserted and can be locked in a guide member 5 arranged therein.
  • the guide part 5 and the eyelet 3 are connected by a web 7 and together form a functional part. It consists of the same material as the base 1 and the curved wall 2 of the clasp and can be produced by a casting process.
  • the functional part is inserted into a negative form of the clasp and the negative form is then poured out with a pourable or sprayable material, in particular with a low-melting plastic, so that a composite part made of plastic 6 and the functional part is contained.
  • a pourable or sprayable material in particular with a low-melting plastic
  • the plastic is then made superficially conductive by immersion in a chemical metallization bath, and the composite part is then immersed as a mold core in an electrolytic metallization bath.
  • a wire can be attached to the eyelet 3, through which a cathodic potential can be imparted to the mandrel.
  • the mold core as a whole, ie both on the plastic surface and on the areas not covered by the plastic of the functional part coated with precious metal.
  • the desired layer thickness preferably not more than 60 ⁇ m
  • the resulting hollow body is removed from the electrolytic bath and rinsed. He's basically done with it.
  • the plastic 6 remains in the hollow body, the entire outer surface of which is supported by the plastic and the functional part embedded therein.
  • the wall thickness of the hollow body is shown exaggeratedly thick in FIG. 2 for the sake of illustration.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Adornments (AREA)
EP94115512A 1993-10-02 1994-09-30 Corps creux en métal précieux ou en alliage de métaux précieux utilisé comme bijou ou article de bijouterie Expired - Lifetime EP0646338B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4333472 1993-10-02
DE4333472 1993-10-02
DE4339641A DE4339641A1 (de) 1993-10-02 1993-11-20 Hohlkörper aus einem Edelmetall oder aus einer Edelmetallegierung zur Verwendung als Schmuck- oder Juwelierware
DE4339641 1993-11-20

Publications (2)

Publication Number Publication Date
EP0646338A1 true EP0646338A1 (fr) 1995-04-05
EP0646338B1 EP0646338B1 (fr) 1999-04-07

Family

ID=25930082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94115512A Expired - Lifetime EP0646338B1 (fr) 1993-10-02 1994-09-30 Corps creux en métal précieux ou en alliage de métaux précieux utilisé comme bijou ou article de bijouterie

Country Status (2)

Country Link
EP (1) EP0646338B1 (fr)
AT (1) ATE178463T1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828420A1 (fr) * 2001-08-10 2003-02-14 Pascaline Roselyne Domi Reaute Procede de fabrication d'objets decoratifs legers ou creux, en metal precieux ou non, reproduisant des pliages japonais pour la bijouterie ou autre
GB2392605A (en) * 2002-09-04 2004-03-10 Carl Winn Manufacturing jewellery
WO2006105810A1 (fr) * 2005-04-05 2006-10-12 Worldgem Brands- Gestão E Investimentos Lda Procede de fabrication d’objets precieux et produits obtenus par ce procede
IT201800010756A1 (it) * 2018-12-03 2020-06-03 Salim Mouhadab Processo di fabbricazione di oggetti ornamentali

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1771409A1 (de) * 1968-05-20 1971-12-23 Reinhold Krause Verfahren zur Herstellung von Schmuckgegenstaenden
US4343684A (en) * 1980-12-19 1982-08-10 Stanley Lechtzin Method of electroforming and product
WO1990002828A1 (fr) * 1988-09-09 1990-03-22 Daya Ranjit Senanayake Objets creux de joaillerie et procede
DE3918920A1 (de) * 1989-06-09 1990-12-13 Eberle Josef Gmbh & Co Kg Galvanoplastisches verfahren zum herstellen von hohlen schmuck- und juwelierwaren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1771409A1 (de) * 1968-05-20 1971-12-23 Reinhold Krause Verfahren zur Herstellung von Schmuckgegenstaenden
US4343684A (en) * 1980-12-19 1982-08-10 Stanley Lechtzin Method of electroforming and product
WO1990002828A1 (fr) * 1988-09-09 1990-03-22 Daya Ranjit Senanayake Objets creux de joaillerie et procede
DE3918920A1 (de) * 1989-06-09 1990-12-13 Eberle Josef Gmbh & Co Kg Galvanoplastisches verfahren zum herstellen von hohlen schmuck- und juwelierwaren

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828420A1 (fr) * 2001-08-10 2003-02-14 Pascaline Roselyne Domi Reaute Procede de fabrication d'objets decoratifs legers ou creux, en metal precieux ou non, reproduisant des pliages japonais pour la bijouterie ou autre
GB2392605A (en) * 2002-09-04 2004-03-10 Carl Winn Manufacturing jewellery
WO2006105810A1 (fr) * 2005-04-05 2006-10-12 Worldgem Brands- Gestão E Investimentos Lda Procede de fabrication d’objets precieux et produits obtenus par ce procede
IT201800010756A1 (it) * 2018-12-03 2020-06-03 Salim Mouhadab Processo di fabbricazione di oggetti ornamentali

Also Published As

Publication number Publication date
EP0646338B1 (fr) 1999-04-07
ATE178463T1 (de) 1999-04-15

Similar Documents

Publication Publication Date Title
DE10339930B4 (de) Herstellungsverfahren für Metallschmucktafeln
DE4422961C2 (de) Draht für Schmuckstücke und Verfahren zu seiner Herstellung
DE2623192B2 (de) Verfahren zum Fassen von Edelsteinen in Schmuckkörpern aus Edelmetall
DE3302789C2 (de) Uhrenarmband und Verfahren zu seiner Herstellung
DE3545549A1 (de) Verfahren zur herstellung von schmuckstuecken aus edelmetallen und danach hergestellte schmuckstuecke
DE69923269T2 (de) Verfahren zur Befestigung eines Schmucksteines
EP0900533B1 (fr) Hollow jewel
DE3515927A1 (de) Spritzgiessvorrichtung und verfahren zur herstellung eines gegenstandes in einer derartigen vorrichtung
DE102017128145B4 (de) Armband und Verfahren zur Herstellung eines Armbands
DE3213543C1 (de) Schmuckstueck aus Platin und Feingold
DE3918920C2 (fr)
EP0646338A1 (fr) Corps creux en métal précieux ou en alliage de métaux précieux utilisé comme bijou ou article de bijouterie
DE3231217A1 (de) Brillengestell
DE3844414A1 (de) Verzierung fuer brillengestelle
DE4339641A1 (de) Hohlkörper aus einem Edelmetall oder aus einer Edelmetallegierung zur Verwendung als Schmuck- oder Juwelierware
EP0702910B1 (fr) Corps creux à parois minces fait d'un métal ou d'un alliage précieux pour utilisation comme article de bijouterie
DE3133414A1 (de) Verfahren zum herstellen eines uhrzeigers
DE893410C (de) Herstellungsverfahren eines mit angebrachten Zeichen versehenen Uhrenzifferblattes und nach diesem Verfahren hergestelltes Zifferblatt
EP0195132A2 (fr) Procédé de fabrication de bijoux en métaux précieux et bijoux ainsi obtenus
DE9415442U1 (de) Dünnwandiger Hohlkörper aus einem Edelmetall oder aus einer Edelmetalllegierung zur Verwendung als Schmuck- oder Juwelierware
DE2908802A1 (de) Gliederarmband
DE475594C (de) Verfahren zur Herstellung von Ventilsteuerungsknaggen durch Verbundguss
DE19944349C2 (de) Werkzeugplatte und Verfahren zu ihrer Herstellung
DE4135139A1 (de) Verzierung
DE19724981A1 (de) Verfahren zur Herstellung eines Objekts, insbesondere eines Schmuckstücks

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR IT LI

17P Request for examination filed

Effective date: 19951005

17Q First examination report despatched

Effective date: 19970731

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19990407

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990407

REF Corresponds to:

Ref document number: 178463

Country of ref document: AT

Date of ref document: 19990415

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59408071

Country of ref document: DE

Date of ref document: 19990512

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010921

Year of fee payment: 8

Ref country code: AT

Payment date: 20010921

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020930

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040825

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060401