EP0149970A1 - Wasserdichte Uhrkrone - Google Patents

Wasserdichte Uhrkrone Download PDF

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Publication number
EP0149970A1
EP0149970A1 EP84810514A EP84810514A EP0149970A1 EP 0149970 A1 EP0149970 A1 EP 0149970A1 EP 84810514 A EP84810514 A EP 84810514A EP 84810514 A EP84810514 A EP 84810514A EP 0149970 A1 EP0149970 A1 EP 0149970A1
Authority
EP
European Patent Office
Prior art keywords
crown
silicone
rubber
tube
primer
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.)
Withdrawn
Application number
EP84810514A
Other languages
English (en)
French (fr)
Inventor
Enrico Della Casa
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.)
Tubular Holdings Ltd
Original Assignee
Tubular Holdings Ltd
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 Tubular Holdings Ltd filed Critical Tubular Holdings Ltd
Publication of EP0149970A1 publication Critical patent/EP0149970A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/0015—Light-, colour-, line- or spot-effects caused by or on stationary parts
    • 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
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems

Definitions

  • the subject of the present invention is a dust-proof and water-resistant crown for a watch boot, the peculiarity of which is that the watertightness of the watch at the level of the crown is no longer ensured by a seal 0- Ring, but by a total elastomer covering of the functional part as well as an external covering.
  • the crown according to the invention is characterized in that the internal part which seals at the level of the tube of the box as well as the external part of the crown, are made of a total covering of rubber or silicone material, in order to guarantee a perfect seal of the watch against dust and against water at the crown - box tube level, the seal no longer working on a small part of the length of the tube, but on its entirety.
  • the characteristic of this patent resides in the fact that to allow a seal at the crown - tube level, it is planned to make a molding either one or two beads on the inside of the crown which works on a smooth tube, or on a tube provided with one or two grooves.
  • the synthetic material used to carry out the assembly is a plastic material which does not have the elastic properties presented by the elastomer according to our claim which makes it possible to guarantee a seal by having the internal face of the smooth crown as well as that of the tube.
  • the characteristic of this patent resides in the fact that in order to allow sealing at the crown - tube level, provision is made to mold a plastic material inside a "cap" of metallic coating.
  • the materials used for this embodiment are synthetic plastic materials of the polyamide, nylon, vinyl resins, plexiglass or polystyrol type, which do not have the elastic properties presented by the elastomer according to our claim.
  • the production technique is also different since there is no metallic core inside the molding of this type of product.
  • Fig. no. 1 of the accompanying drawing is a side view with a section on an enlarged scale showing, by way of example, an embodiment according to the current technique, like, of a 'sealed crown'.
  • Fig. no. 2 is a side view with section on an enlarged scale showing, by way of example, an embodiment of the object of the invention.
  • Watertight crowns (Fig. 1) of the above-mentioned type are known per se. They have the disadvantage that the 0-Ring seal (1) which ensures the sealing works only on a small part of the length of the tube of the box (2), and that the retaining ring of the seal (3) leaves the possibility of external agents such as sweat, water salt ... etc., to penetrate to its level, which causes premature deterioration of the seal and therefore allows water infiltration.
  • the crown according to the invention (Fig. 2) is characterized in that the part which seals (1) with the tube of the box (2) is a coating of flexible and compressible material which adheres perfectly over the entire interior depth of the core of the crown (3) while exerting a continuous tension on all the functional length of the tube of the box (2).
  • the aim of the invention is therefore to remedy the above-mentioned drawbacks of crowns by providing, in an arrangement of the aforementioned type (FIG. 2), all the guarantees necessary in order to ensure perfect sealing over time, by eliminating voids. produced by the 0-Ring seal and its retaining ring and guaranteeing sealing no longer on a small part of the length of tube 2, but on the whole of its functional part.
  • the technology used to produce a waterproof crown according to the invention of the type shown in FIG. 2 is therefore a compression molding technology, and to guarantee perfect adhesion of the rubber (1-la) to the core of the crown (3) which is made of stainless steel, this must first undergo a treatment of very specific surface.
  • the vulcanization of the gum used is carried out at one time which guarantees the same molecular structure over the entire interior covering and outside of the soul of the crown.
  • the cores of the crowns (3) having undergone the preparations mentioned above are introduced into a mold inside which is deposited a certain amount of natural gum mixture, the vulcanization is carried out at high pressure and at high temperature.
  • the crown undergoes a mechanical deburring treatment at low temperature.
  • the surface of the outer part of the crown which is made of rubber, makes it possible to obtain, by additive, dyes at the time of vulcanization of crowns of the entire color range.
  • This technique guarantees the color fastness over time, unlike currently known processes such as painting, color oxides, etc. which deteriorate after a certain period of use.
  • the core cores having undergone the preparations mentioned above, are introduced and positioned in a mold inside which is injected at low pressure and at high temperature liquid silicone which catalyzes and transforms into elastic elastomer.
  • the chemical conjunction between the core of the crown (3) and the body of the catalyzed silicone crown (1-la) is obtained during molding by mixing PRIMER 1 and 2 with the silicone and the metallic core, forming thus a molecular union.
  • the outer metal coating (4) of the crown also undergoes the same preparation treatment and is introduced mechanically onto the silicone crown.
  • the chemical conjunction between the metallic coating (4) and the corpus of the catalyzed silicone crown (la) is obtained at low pressure and at high temperature by mixing PRIMER 1 and 2 with the silicone and the exterior metallic coating which thus forms a molecular union.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sealing Material Composition (AREA)
  • Materials For Medical Uses (AREA)
  • Dental Preparations (AREA)
  • Endoscopes (AREA)
  • Adornments (AREA)
EP84810514A 1983-10-24 1984-10-23 Wasserdichte Uhrkrone Withdrawn EP0149970A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5743/83 1983-10-24
CH574383A CH660437GA3 (de) 1983-10-24 1983-10-24

Publications (1)

Publication Number Publication Date
EP0149970A1 true EP0149970A1 (de) 1985-07-31

Family

ID=4298617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84810514A Withdrawn EP0149970A1 (de) 1983-10-24 1984-10-23 Wasserdichte Uhrkrone

Country Status (3)

Country Link
EP (1) EP0149970A1 (de)
JP (1) JPS60115890A (de)
CH (1) CH660437GA3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655166A1 (fr) * 1989-11-27 1991-05-31 Ebel Sa Fabrique Dispositif de commande etanche d'une piece d'horlogerie.
CH686473GA3 (fr) * 1993-03-18 1996-04-15 Jean-Pierre Slavic Couronne a vis pour piece d'horlogerie.
EP1094372A1 (de) * 1999-10-19 2001-04-25 Eta SA Fabriques d'Ebauches Betätigungsknopf
US6453512B1 (en) 1999-10-19 2002-09-24 Eta SA Fabriques d′Ebauches Control button

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH321578A (fr) * 1956-08-13 1957-05-15 Piquerez Sa Ervin Montre munie d'un organe de commande du mécanisme intérieur
US3979549A (en) * 1972-09-25 1976-09-07 Rostone Corporation Composite of metal and thermoset plastic
FR2312819A1 (fr) * 1975-05-30 1976-12-24 Jaeger Perfectionnements aux boutons de manoeuvre
DE3227042A1 (de) * 1982-07-20 1984-01-26 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von korrosionsfesten schutzbezuegen bei anlagenteilen der chemischen und artverwandten industrie unter anwendung der vulkanisation an ort und stelle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH473419A (fr) * 1966-09-29 1969-07-15 Piquerez Sa Ervin Organe de commande pour pièce d'horlogerie étanche

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH321578A (fr) * 1956-08-13 1957-05-15 Piquerez Sa Ervin Montre munie d'un organe de commande du mécanisme intérieur
US3979549A (en) * 1972-09-25 1976-09-07 Rostone Corporation Composite of metal and thermoset plastic
FR2312819A1 (fr) * 1975-05-30 1976-12-24 Jaeger Perfectionnements aux boutons de manoeuvre
DE3227042A1 (de) * 1982-07-20 1984-01-26 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von korrosionsfesten schutzbezuegen bei anlagenteilen der chemischen und artverwandten industrie unter anwendung der vulkanisation an ort und stelle

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JOURNAL SUISSE D'HORLOGERIE ET DE BIJOUTERIE, no. 1, 1982, page 96, Edition internationale export; *
KAUTSCHUK UND GUMMI - KUNSTSTOFF, vol. 24, no. 4, avril 1971, pages 160-167; G. KLEMENT et al.: "Bindung von russgefülltem Naturkautschuk an Stahl in Abhängigkeit von Vulkanisations-System und Wärmeübergang" *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655166A1 (fr) * 1989-11-27 1991-05-31 Ebel Sa Fabrique Dispositif de commande etanche d'une piece d'horlogerie.
EP0429974A1 (de) * 1989-11-27 1991-06-05 Fabrique Ebel SA Wasserdichte Steuerungsvorrichtung für eine Uhr
US5184334A (en) * 1989-11-27 1993-02-02 Fabrique Ebel Sa Sealed control arrangement for a timepiece
CH686473GA3 (fr) * 1993-03-18 1996-04-15 Jean-Pierre Slavic Couronne a vis pour piece d'horlogerie.
EP1094372A1 (de) * 1999-10-19 2001-04-25 Eta SA Fabriques d'Ebauches Betätigungsknopf
US6453512B1 (en) 1999-10-19 2002-09-24 Eta SA Fabriques d′Ebauches Control button

Also Published As

Publication number Publication date
CH660437GA3 (de) 1987-04-30
JPS60115890A (ja) 1985-06-22

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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 BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19851107

17Q First examination report despatched

Effective date: 19870303

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19871114

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DELLA CASA, ENRICO