EP0168009B1 - Ausstattungselement für eine Armbanduhr - Google Patents

Ausstattungselement für eine Armbanduhr Download PDF

Info

Publication number
EP0168009B1
EP0168009B1 EP19850108437 EP85108437A EP0168009B1 EP 0168009 B1 EP0168009 B1 EP 0168009B1 EP 19850108437 EP19850108437 EP 19850108437 EP 85108437 A EP85108437 A EP 85108437A EP 0168009 B1 EP0168009 B1 EP 0168009B1
Authority
EP
European Patent Office
Prior art keywords
particles
element according
exterior element
exterior
watch
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
Application number
EP19850108437
Other languages
English (en)
French (fr)
Other versions
EP0168009A1 (de
Inventor
Eric Loth
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.)
Rado Uhren AG
Original Assignee
Rado Uhren AG
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 Rado Uhren AG filed Critical Rado Uhren AG
Priority to AT85108437T priority Critical patent/ATE34470T1/de
Publication of EP0168009A1 publication Critical patent/EP0168009A1/de
Application granted granted Critical
Publication of EP0168009B1 publication Critical patent/EP0168009B1/de
Expired legal-status Critical Current

Links

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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
    • G04B37/225—Non-metallic cases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making
    • Y10T29/49584—Watch or clock making having case, cover, or back
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/8305—Miscellaneous [e.g., treated surfaces, etc.]

Definitions

  • the present invention relates to a clothing element for a wristwatch, such as a box or a bracelet, at least part of which is made of a composite material.
  • the required mechanical properties are in fact only critical on the surface and in particular on surfaces exposed to attacks due to lines and shocks.
  • the inclusion of microscopic particles has the effect of modifying the elastic properties of the plastic, especially with respect to stresses such as shear, compression, traction, bending, etc.
  • these fillers have a less pronounced effect with respect to the surface hardness due to their microscopic size. Indeed, a sharp element can scratch the surface of such a charged plastic while passing between the particles because of their size. It therefore turns out that effective protection of the surface of a plastic part against rays does not only depend on the hardness of the particles used as filler and on the proportion of these particles.
  • too high a proportion of microscopic fillers can have the consequence of making the resin more fragile to impact, which is obviously not desirable in the case of a watch case which notably includes edges capable of being chipped. if the box material is brittle.
  • the object of the present invention is to at least partially remedy the aforementioned drawbacks.
  • At least part of the clothing element is made of a material which comprises an organic binder and macroscopic particles of mineral substances contained in the binder.
  • These particles are exposed on at least a visible surface portion of the element and occupy 60% to 95% of this portion.
  • Such an element has the advantage of having excellent protection against lines and shocks in its surface thus formed, due to the macroscopic dimension of the inclusions and their sufficient density, without making the composite excessively fragile. It is thus possible to produce a watch case or a bracelet having inalterability properties close to those of boxes or bracelets covered with sintered carbides or nitrides, by an injection molding process.
  • elements produced according to the invention have a new aesthetic appearance, in particular after polishing the surface which brings out the colors of the inclusions different from that of plastic, for example. Indeed, the inclusions of nitrides, oxides, carbides, etc., can have very diverse colors.
  • any mineral material can be combined with resin, namely carbides, borides, nitrides, carbonitrides, oxides, etc., but also sintered agglomerates such as TiC bound with Ni, elements with a monocrystalline network such as ⁇ -A1 2 0 3 (corundum) or with an amorphous structure such as glass, particles of stellite or hard steel of the same type as those used for sintering.
  • resin namely carbides, borides, nitrides, carbonitrides, oxides, etc.
  • sintered agglomerates such as TiC bound with Ni
  • elements with a monocrystalline network such as ⁇ -A1 2 0 3 (corundum) or with an amorphous structure such as glass, particles of stellite or hard steel of the same type as those used for sintering.
  • the choice of resin is relatively limited.
  • a technical plastic is chosen as the resin, in particular an acetal homopolymer resin, such as that sold by Du Pont under the trade name "Delrin” (registered trademark), of the 100 ST type, which has the advantage of having resistance. Izod impact (with notch) of 900 J / m, that is to say 7 to 30 times greater than that of the other "Delrin” which constitute one of the best ranges of technical plastics.
  • This material is moldable by hot injection.
  • Other materials such as polyamide 12 or polycarbonate can also be used.
  • the watch element such as the middle part, the back, or the bezel, or even the back-middle part of a case, or the bracelet is placed in the mold cavity intended for molding the watch element, a charge of mineral particles which can comprise a mixture of the various abovementioned substances, but also consist of only one of these substances, depending on the decorative effect sought.
  • the particle size can also be chosen to be uniform or, on the contrary, as diverse as possible.
  • the smallest particle size is of the order of 0.1 mm; it can go up to several millimeters. When the particles are of different colors, one can for example choose the size according to the color.
  • the proportion of particles in the volume can be variable, but it is generally made so that there is on the surface of the watch element intended to form a visible surface portion, and particularly the parts most exposed to the wear, as large a proportion as possible of mineral inclusions. Then, the mold is closed and the resin is injected under pressure. The element thus produced then has a mosaic structure formed of hard particles and resin which keeps these associated with each other. These particles occupy most of this portion. After cooling and demolding, the surfaces of the molded element intended to form the visible parts from the outside are advantageously polished with a diamond wheel to bring the inclusion particles perfectly flush with the surface of the resin. The latter tends to withdraw during cooling. This grinding also makes it possible to highlight the different colors of the particles which are flush with the surface of the element, since, to promote their anchoring in the resin, they are preferably used in the raw state. These particles can advantageously come from manufacturing waste, but they can also be produced specially.
  • the charge of mineral material in the form of particles larger than or equal to 0.1 mm can be incorporated into the resin before its injection into the mold.
  • this technique poses abrasion problems when the resin loaded with particles moves in the injection conduits.
  • a third technique consists in including the mineral particles only at the surface and in particular on the visible surfaces.
  • the resin is injection molded without filler.
  • the particles are included as desired on the portions of desired surfaces, in particular the visible surfaces, by heating the particles to a temperature sufficient to locally soften the resin and allow their penetration.
  • This technique offers in particular the advantage of being able to control the arrangement of the particles according to their dimensions and / or their colors, with a view to specially protecting certain parts of the surface, in particular the edges and / or creating decorative patterns which do not are not left to chance as in the variants described above.
  • the portion of the visible surface and therefore exposed to attack of all kinds, covered by hard particles must be greater than the half the surface.
  • it will be between 60% and 95%, and preferably around 85%.
  • the hardness of the particles will generally be chosen at 1400 Hv. Some of the particles may even be made of transparent substances depending on the desired aesthetic appearance.
  • the organic binder and the macroscopic particles have a very high wettability in order to ensure maximum fluidity of the binder and perfect anchoring of the particles.
  • Processes are known in which particular elements are added to the organic binder to make it wetting.
  • the particles they will be made wetting by a thorough cleaning which will rid them of all fats or other impurities.
  • this treatment will prevent accidental formation of bubbles which could give rise to tears.
  • the binder is an adhesive ensuring adhesion between the particles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adornments (AREA)
  • Powder Metallurgy (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Physical Vapour Deposition (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Claims (9)

1. Ausstattungselement für eine Armbanduhr, das wenigstens teilweise von einem Verbundwerkstoff gebildet wird, dadurch gekennzeichnet, daß der Werkstoff ein organischen Bindemittel und makroskopische Teilchen aus mineralischen Stoffen enthält, die im Bindemittel eingeschlossen sind und die auf wenigstens einem Teil der sichtbaren Oberfläche des Elementes mit dieser bündig angeordnet sind und 60 bis 95 % dieses Teils einnehmen.
2. Ausstattungselement nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchen in der gesamten Masse des Bindemittels verteilt sind.
3. Ausstattungselement nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchen ausschließlich in dem Bereich des erwähnten Teiles der Oberfläche angeordnet sind.
4. Ausstattungselement nach Anspruch 1, dadurch gekennzeichnet, daß das Bindemittel ein Acetalhomopolymerisat ist.
5. Ausstattungselement nach Anspruch 1, dadurch gekennzeichnet, daß die bündig angeordneten Teile der Teilchen durch Flächen gebildet sind, die durch Polieren dieses Teiles entstanden sind.
6. Ausstattungselement nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchen aus Stoffen mit verschiedenen Farben bestehen.
7. Ausstattungselement nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchen Abmessungen größer oder gleich 0,1 mm haben.
8. Ausstattungselement nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Element ein Gehäuse ist.
9. Ausstattungselement nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Element ein Armband ist.
EP19850108437 1984-07-12 1985-07-08 Ausstattungselement für eine Armbanduhr Expired EP0168009B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85108437T ATE34470T1 (de) 1984-07-12 1985-07-08 Ausstattungselement fuer eine armbanduhr.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3382/84 1984-07-12
CH338284A CH658160GA3 (de) 1984-07-12 1984-07-12

Publications (2)

Publication Number Publication Date
EP0168009A1 EP0168009A1 (de) 1986-01-15
EP0168009B1 true EP0168009B1 (de) 1988-05-18

Family

ID=4254750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850108437 Expired EP0168009B1 (de) 1984-07-12 1985-07-08 Ausstattungselement für eine Armbanduhr

Country Status (8)

Country Link
US (1) US4730288A (de)
EP (1) EP0168009B1 (de)
JP (1) JPS6157633A (de)
KR (1) KR880000223B1 (de)
AT (1) ATE34470T1 (de)
CH (1) CH658160GA3 (de)
DE (1) DE3562829D1 (de)
HK (1) HK56090A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH686473B5 (fr) * 1993-03-18 1996-10-15 Boninchi Sa Couronne à vis pour pièce d'horlogerie.
GB9908498D0 (en) * 1999-04-15 1999-06-09 Thayer Andrew R Improvements in or relating to jewellery or the like
TW533105B (en) * 1999-10-20 2003-05-21 Injex Corp Method of producing watchband parts

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841848A (en) * 1970-01-30 1974-10-15 Suwa Seikosha Kk HARD WATCH CASE COMPRISING TiN, T, AND AT LEAST ONE OF Mn, Al AND V
GB1414864A (en) * 1972-03-27 1975-11-19 Suwa Seikosha Kk Method of producing an externally visible part of a watch
JPS5068163A (de) * 1973-10-18 1975-06-07
JPS568898U (de) * 1979-07-02 1981-01-26
US4495254A (en) * 1981-05-18 1985-01-22 Westinghouse Electric Corp. Protectively-coated gold-plated article of jewelry or wristwatch component
JPS5880586A (ja) * 1981-11-10 1983-05-14 Seiko Epson Corp 時計用プラスチツクケ−スの製造方法

Also Published As

Publication number Publication date
DE3562829D1 (en) 1988-06-23
HK56090A (en) 1990-08-03
ATE34470T1 (de) 1988-06-15
EP0168009A1 (de) 1986-01-15
KR880000223B1 (ko) 1988-03-15
US4730288A (en) 1988-03-08
KR860000840A (ko) 1986-02-20
CH658160GA3 (de) 1986-10-31
JPS6157633A (ja) 1986-03-24

Similar Documents

Publication Publication Date Title
EP3674816B1 (de) Ausstattung einer uhr oder eines schmuckstücks aus einem schweren verbundmaterial
EP0502796B1 (de) Brillengestell aus Kunststoff und Verfahren zu seiner Herstellung
WO2018115009A1 (fr) Composant horloger en materiau composite
WO2001030719A3 (en) Composite stone surfacing with improved optical and wear resistance properties
EP0456965B1 (de) Ski und Verfahren zu seiner Herstellung
EP0168009B1 (de) Ausstattungselement für eine Armbanduhr
CH691008A5 (fr) Verre de montre inrayable et transparent et boîte de montre équipée d'un tel verre.
EP0100276A2 (de) Verfahren zur Herstellung eines Sitzelementes durch Giessen eines Rahmens auf eine Polsterung und nach diesem Verfahren hergestelltes Sitzelement
FR2672252A1 (fr) Roue en resine synthetique du type d'une seule piece.
WO1998017462A1 (fr) Procede de fabrication d'une partie avant pour une monture de lunettes
EP2579106A1 (de) Formung einer durchsichtigen Monoblock-Uhrenkomponente
EP2133972B1 (de) Verkleidungsplatte für Elektrogerät
FR2765517A1 (fr) Article en matiere plastique, procede de fabrication et composition de moulage
FR1465637A (fr) Dalles préfabriquées
WO2004096578A2 (fr) Coque de recouvrement et son procede de fabrication
FR2711089A1 (fr) Procédé de préparation d'une garniture de friction en réutilisant une ancienne garniture de friction usée, et garniture de friction ainsi obtenue.
EP1375190A1 (de) Dekorationsverfahren eines Körpers ,wie ein Sportgerät
EP2892380A1 (de) Schmuckartikel
CH679138A5 (en) Decorative mouldings mfr. for ornaments - by using epoxy] resin and hardener
CH719576A9 (fr) Assemblage composite.
EP4363933A1 (de) Uhrkomponente aus gefärbtem geschmiedetem kohlenstoff und verfahren zur herstellung solch einer uhrkomponente
FR3072049B1 (fr) Dispositif autocollant repositionnable
FR2630678A1 (fr) Procede de fabrication d'un ruban en matiere thermoplastique, notamment pour bracelet de montre
FR2882504A1 (fr) Procede decoratif pour verres et mineraux
BE829777A (fr) Panneau opaque colore et son procede de fabrication

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

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

17P Request for examination filed

Effective date: 19860407

17Q First examination report despatched

Effective date: 19870519

ITF It: translation for a ep patent filed
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 GB IT LI

REF Corresponds to:

Ref document number: 34470

Country of ref document: AT

Date of ref document: 19880615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3562829

Country of ref document: DE

Date of ref document: 19880623

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940623

Year of fee payment: 10

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

Ref country code: FR

Payment date: 19940714

Year of fee payment: 10

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

Ref country code: DE

Payment date: 19940718

Year of fee payment: 10

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

Ref country code: CH

Payment date: 19940720

Year of fee payment: 10

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

Ref country code: AT

Payment date: 19940725

Year of fee payment: 10

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

Ref country code: GB

Effective date: 19950708

Ref country code: AT

Effective date: 19950708

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

Ref country code: LI

Effective date: 19950731

Ref country code: CH

Effective date: 19950731

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950708

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

Effective date: 19960430

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

Ref country code: DE

Effective date: 19960501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST