CH649436A - - Google Patents

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Publication number
CH649436A
CH649436A CH358382A CH358382A CH649436A CH 649436 A CH649436 A CH 649436A CH 358382 A CH358382 A CH 358382A CH 358382 A CH358382 A CH 358382A CH 649436 A CH649436 A CH 649436A
Authority
CH
Switzerland
Prior art keywords
glass
plate
plates
sockets
glued
Prior art date
Application number
CH358382A
Other languages
French (fr)
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 filed Critical
Priority to CH358382A priority Critical patent/CH649436A/fr
Publication of CH649436A publication Critical patent/CH649436A/fr

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Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B39/00Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/004Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass
    • G04B39/006Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass out of wear resistant material, e.g. sapphire
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B47/00Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
    • G04B47/04Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached ornaments or amusement apparatus
    • G04B47/042Fastening of jewels and the like

Description

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1. Wristwatch case, the flat sapphire crystal, seen from the front, hides the case middle by completely covering it and is fixed to the latter by screws engaged from the back side of the case in sockets secured to the glass by a seat of larger diameter which they have at their bottom, characterized in that the seat (9) of each socket (7) is rigidly trapped inside the glass (1.23 , 27) itself, between two sapphire plates (2,4; 2, 25; 28, 31) glued one on the other and in that these seats (9) are masked by ornaments (12, 12a) incorporated into the glass (1, 23, 27).

2. Box according to claim 1, characterized in that its glass (1,23, 27) comprises a base plate (2,28) which occupies the entire surface, in that openings are drilled through this plate ( 2.28) for each of said sockets (7), the part (10) of these openings opening into the face of this plate (2, 28) intended to be glued being conical, and in that the seats (9) of the said sockets (7) have the same taper and a height at most equal to that of the conical part of said openings, so that these seats are completely embedded in the base plate (2,28) of the glass (1,23, 27).

3. Box according to claim 2, characterized in that a single sapphire plate (4) is bonded to the base plate (2) of the glass (1), which it completely covers without overflowing, and in that said ornaments include a metallization layer (12) formed by vacuum spraying on the reverse of the peripheral zone of said glued plate.

4. Box according to claim 3, characterized in that said ornaments further comprise colored sapphire rods (16), which have a section in the form of a circular segment, but, at most, in the form of a semicircle and are bonded with the interposition of a metallization layer, formed by vacuum spraying, in grooves (19) which have a section of corresponding shape and are formed in the external face of the plate (4) of the glass (1). glued to its base plate (2), the said rods (16) being flush with this external face.

5. Box according to claim 3 or 4, characterized in that one of the faces of said glass plates, which are intended to be glued against each other, is simply ground and has fine streaks (11) .

6. Box according to claim 2, characterized in that a single plate (2) of sapphire is glued to the base plate (2) of the glass (1), which it completely covers, and in that the said ornaments comprise a thin frame (12a) in one or more decorative pieces, juxtaposed, this frame being interposed between said plates of the glass and secured to them by gluing.

7. Box according to claim 2, the glass of which has a quadrangular shape, characterized in that a set of juxtaposed plates (24,25; 30, 31), of the same height, comprising a central sapphire plate (24,30 ), which extends at least throughout the transparent area of the glass, and sapphire plates (25,31), which are opacified by ornaments and run along at least two sides of the glass or extend in its corners, is glued to said base plate (2,28) and completely covers it without overflowing.

8. Box according to either of the preceding claims, characterized in that the glass (1.27) is lined with at least one gloss (34), which is glued in a conical cell (32), hollowed out through a bonded sapphire plate (4, 30), into a part of said base plate (2,28).

Wristwatch boxes are known, the glass of which is fixed to the middle part of the box by screws engaged from the bottom side thereof in sockets (CH-A-206 230). The sockets of these boxes pass through the glass which they hold in place by a split head, which is embedded in a corresponding opening in the glass.

In addition to the fact that such a method of fixing, applied to a glass constituted by a sapphire plate, would risk subjecting the latter to tensions exposing it to rupture, the aesthetic effect produced by the heads of these sockets does not is not happy. Many decorations in the box would not even match these visible heads at all.

By stopping the heads of these sockets at the middle, it is possible to hide them (CH-B-622 151). In this case, the screws engaged in the sockets from the bottom side of the box only fix the bottom of the box to its middle part and no longer the glass which is glued and therefore fixed permanently, which complicates replacement. , for example in case of rupture.

However, wristwatch boxes are also known in which the glass is fixed to the middle part by screws engaged from the bottom side in invisible sockets, integral with the glass (JP-A-57 30 975). In these latter boxes, the sockets in question came from one-piece manufacturing with a frame which is fixed under a decorative plate, itself fixed to the glass.

This construction is however relatively complicated. The present invention aims, among other things, to simplify it without sacrificing the possibilities of decorating the box, on the contrary, and this even increasing the solidity of the glass.

The features defined by the characteristic of claim 1 make it possible to obtain this result. Because the head of the sockets is trapped in the glass itself, it is no longer necessary to fix a frame under it. In addition, due to the two sapphire plates glued to each other, the glass is more solid than if it were made in one piece. Furthermore, there are between the two sapphire plates glued one on the other practically the same possibilities of decorating the box as those offered by a frame glued under the glass.

The cones formed in the base plate of the glass and the conical heads of the glass fixing sleeves, provided in the special embodiments defined by claim 2, allow, by placing these heads in their seats, to perfectly center the say sockets, that is to say fix them in the exact place you want. The pressure they exert on the glass base plate is not dangerous. Even if, by chance, it came to produce a rupture of this base plate, a piece of it could not come off; it would remain stuck, in fact, to the sapphire plate stuck on the base plate.

The embodiments defined by claim 3 are as simple as advantageous. The two plates that make up the glass have the same shape and the latter is doubled throughout its extent. In addition, since these two plates are bonded directly to each other throughout the transparent part of the glass, it is not necessary to pay special attention to the adhesion of the metallization layer formed on the back of the plate. glued from the glass. Thus trapped entirely between two sapphire plates, this layer is completely inaccessible; it is perfectly sheltered from any contact with foreign bodies. Unless the glass is destroyed, nothing can alter it.

Decorative elements may also be provided in the external face of the glass, provided that their hardness protects them from depredation, as defined in claim 4.

The special embodiments defined by claim 5 have several advantages. Although a plate of

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sapphire with simply ground face is not transparent, but only translucent, the glue has the effect of filling the fine grinding streaks, so that the set of two sapphire plates glued one on the other becomes perfectly transparent. This avoids the costly polishing operations of one of the faces of the two sapphire plates. In addition, such a glass is anti-reflective. It is therefore no longer necessary to subject the face of the dial to special treatment intended to make it matt. Finally, this glass makes it possible to produce, as desired, matt or shiny metallic layers, on the reverse of the bonded plate, depending on whether the simply ground face in question is the underside of the bonded sapphire plate or the upper face of the plate. basic glass.

An independent frame, for example of precious or semi-precious stone, can also be interposed between the two sapphire plates glued to each other, provided that its thickness does not preferably exceed two tenths of a millimeter, as follows from claim 6.

In the case of quadrangular glasses (rectangular or square), it is not essential to glue a single plate on the base plate of the glass. As defined in claim 7, it is possible to separately make a plate extending at least in the transparent area of the glass and opaque plates to mask the glass fixing sleeves while constituting the decoration of the visible face of the box, these different plates being perfectly juxtaposed, so as to cover the entire face of the base plate of the glass, and glued to the latter.

As the assembly forming the glass is relatively thick (which does not increase the apparent thickness of the watch, due to the transparency of the glass), it is possible, as defined in claim 8, to dig therefrom alveoli deep enough to accommodate the cylinder head of cut diamonds and into which it can be glued avoiding any risk of losing these stones.

Four embodiments of the wristwatch case according to the invention are shown schematically and simply by way of example in the drawing in which:

fig. 1 is a partial section of the first embodiment;

fig. 2 is a plan view on a smaller scale, a part being torn away;

fig. 3 shows the glass in perspective, one part being cut and another illustrating in exploded perspective the method of manufacturing this glass;

fig. 4 is a view similar to that of FIG. 3, representing the second embodiment;

fig. 5 is a partial section of a detail of the third embodiment, and FIG. 6 is a perspective view of the fourth embodiment.

The box according to the first embodiment (fig. 1 to 3) has the general shape of a rectangle. Its sapphire glass 1 is flat. It includes a base plate 2 which, seen from the front, hides the middle part 3 of the case by completely covering it. A second plate 4 is permanently fixed to the plate 2 by a layer of adhesive 5.

The glass 1 rests on the flat upper face 6 of the middle part 3, left in the state in which the strip used for machining the middle parts 3 leaves the rolling. It is fixed to this face of the middle part by four screws (not shown) engaged from the bottom side of the middle part in the taps of four sockets 7 located in the vicinity of the angles of the box, one of those -this being shown in FIG. 1. The said screws and the sockets 7 pass through axial holes 8 which pass right through the middle. Incidentally, these screws can be used at the same time to fix the bottom of the case to the middle part 3. In order to hold the glass 1 in a precise position on the middle part 3, the diameters of the sockets 7 and of the holes 8 are adjusted one to the other with gentle friction. In this way, the sockets 7 are exactly positioned on the middle part 3. They are also positioned relative to the glass 1, thanks to a conical seat 9, which is formed at the bottom of the sockets 7 and which rests on a seat 10 of same taper of the base plate 2.

If it is not possible to drill in a sapphire plate series of cylindrical holes of strictly constant diameter, due to the very rapid wear of the drilling tool, we can, however, position the axis of conical seats such as 10 with very high precision. So that the axis of the sockets 7 coincides with that of the corresponding seats 10, it is naturally necessary that the seats 9 are well pressed against the bottom of their seats 10. For this purpose, it is possible to engage a cylindrical sleeve on the part of each socket 7 extending under the plate 1, then engage in each of these sockets a screw whose head is supported on the corresponding sleeve. In this way, said sleeve is pressed against the underside of the plate 2. This makes it take a position perfectly perpendicular to this plate 2, which it naturally communicates with the socket 7 on which it is engaged. In addition, said screw pulls the seat 9 at the bottom of the seat 10 and holds it firmly in this position, in which its axis coincides with that of this seat.

So that the glass plate 4 can then rest properly on the plate 2, it is important that the seats 9 of the sockets 7 do not protrude above the plate 2. To satisfy this condition, the seats 10 are hollowed out to a depth slightly greater than the height of these seats 9, as shown in FIG. 1. The latter also shows fine streaks 11 on the back of the plate 4. This face of the plate 4 has, in fact, not been polished, but simply ground, so that this plate has, in the dry state , the appearance of a frosted glass. In this state, a thin metallization layer 12 is deposited by vacuum spraying on the reverse of the periphery of the plate 4. This metallization can be compact as shown in FIG. 2. It could also include a first deposit, for example of gold, which could be chemically cut so as to create a decorative pattern (fillets, arabesques or other), then covered with a second protective deposit, constituting at the same time a background. in the cutouts of the first deposit.

As the metallization 12 is deposited on a surface of the plate 4 which has only been subjected to a simple grinding, it appears mat through this plate 4.

When the sockets 7 and the aforementioned sleeves have been fixed in the manner described in plate 2, these sleeves can be used to hold this plate in a very precise position, by engaging them in corresponding holes of an appropriate fitting. At this stage, the upper face of the plate 2 and the lower face of the plate 4 are coated with a layer of adhesive such as, for example, one of those sold under the brand "LOCTITE", references 357 or 358, which polymerize in ten seconds under the action of ultraviolet rays, or, references 317 or 318 which, added to an activator, polymerize in one hour at 80 ° C. As these adhesives are very fluid and very wetting, they fill the streaks 11 by making the plate 4 perfectly transparent. It is, moreover, easy to apply these adhesives while avoiding any air bubble, which would have the effect of disturbing the aesthetic effect of the glass 1.

The plate 4 is then placed on the plate 2 and. maintained in the desired position on this plate, then the assembly is subjected, depending on the nature of the adhesive, to ultraviolet radiation or to heat. This operation causes the glue to polymerize to the point of generating

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adhesion of several kgp / mm2. However, only the glue caught between the plates 2 and 4, excluding the "overflow" seeping around these plates, undergoes the polymerization described. The beads of glue around these plates remain soft and can be easily removed. .

We notice in fig. 1 that the metallization 12 extends from the edge of the plate 4 inwards, up to a little beyond the opening 13 of the middle part 3, in which the dial (not shown) of the watch is intended to appear. As the ridges 11 have been filled with glue, the area of the glass included inside the metallization layer 12 is perfectly transparent. In addition, this area of the glass has an anti-reflective effect. This has the advantage that the dial no longer needs to be subjected to laborious operations intended to make the surface matt. Fig. 1 also shows that the adhesive layer 5 not only extends throughout the space between the adjacent planar faces of the plates 2 and 4, but that it also fills the spaces of the conical recesses 10 of the plate 2 that the seats 9 of the sockets 7 leave free.

To certainly prevent the sockets 7 from rotating relative to the glass 1, when the latter is screwed onto the middle part 3, at least one flat part 14, but preferably two (figs 2 and 3) are formed on the seat 9 of each socket 7, so that the adhesive forms locking lugs 15 between these flats and the seats 10.

Figs 1 and 2 show that the plate 4 carries, along each of its sides, above the metallized layer 12, three semi-cylindrical rods 16, which are glued in grooves of the same shape of the plate 4. These rods are made of corundum or colored sapphire, that is to say of the same basic material as the plates 2 and 4. A reflective metallization layer is deposited on their cylindrical face, so that the incident light is returned in a narrow median zone of these rods, where it forms a line of intense luminosity 17 (fig. 2).

Finally, the seal between the glass 1 and the middle part 3 is ensured by a gasket 18, housed in a groove made in the face 6 of the middle part 3.

Fig. 3, in which only one rod 16 per side of the glass has been shown for simplicity, shows how the glass 1 can be obtained. In the right part of this figure, we see that at the start, the sapphire plates 2 and 4 are perfectly rectangular. Their angles are sharp and their edges perpendicular to the faces. Semi-cylindrical grooves 19, equal in number to that of the rods 16 which can be incorporated into the glass, are dug from one edge to the other of the plate 4. At the start, these colored sapphire rods are cylindrical, as we see it in 16a in fig. 3. Their manufacture is easy and inexpensive. The cylindrical face of the rods 16a is polished and then coated with a reflective metallization layer. These rods 16a are then glued into the grooves 19 of the plate 4, then their projecting part of this plate is removed by grinding, so as to bring the ground face of these rods flush with the upper face of the plate 4, which can then be polished at the same time as the uncovered face of the rods 16. It can happen that these operations result in a reduction in the thickness of this plate, therefore in the extent of the grooves 19 and of the rods 16, to the point that their section will only have the shape of a circular segment. If this reduction does not influence the aesthetic effect of the rods 16 appreciably, it should however not be pushed to the point of compromising the adhesion of these rods to the bottom of the grooves 19. After having subjected the back of the plate 4 to the metallization described, this plate can be glued to the plate 2.. _

It is however possible to dig the grooves 19, to stick the rods 16a there, to grind them then to polish the upper face of the plate 4 after it has been glued to the plate 2.

The glass thus obtained is then bevelled, as can be seen at 20 in FIG. 2, then bevels 21 are formed all around the upper edge of the glass, the sides 22 of which can be polished at this time. The length of the rods 16a is chosen so that their ends are bevelled at the same time as the plate 4.

We also notice in fig. 2 that the rods 16a, extending along the short sides of the glass, were glued in place before digging the grooves 19 along the long sides of the plate 4. Thus, the rods 16a, glued last, s '' fit without continuity in the hollowed out parts of the sticks already glued along the short sides of the plate 4.

Although the seats 9 of the sockets 7 are located inside the glass 1 itself, the ornaments 12, 16 do not only camouflage these sockets; they give the visible side of the box a highly original appearance.

Instead of leaving the streaks 11 remaining on the underside of the plate 4, one could also leave them on the upper face of the base plate 2. The adhesive would behave in the same way with them. The central part of the glass would also be perfectly transparent and the same anti-reflection effect would be obtained as the metallization layer 12 would be deposited on a polished surface, it would however appear shiny.

Since the two sapphire plates 2,4 are very firmly joined to each other in the transparent area of the glass 1, it is not necessary for the metallization layer 12 to adhere particularly well to the plate 4. Since layer 12 is trapped between these two plates, which protect it, one can very well deposit in this place for example a layer of silver or aluminum, whose relatively reduced adhesion has prohibited its use in all case this layer is exposed, although its appearance is as attractive as it is original.

If, following a chemical cut-out of a first deposit on the back of the plate 4, the metallization 12 gives the glass 1 and consequently the box an already sufficiently decorated appearance, we will of course renounce any other addition of ornament on the plate 4.

The second embodiment differs from the first only by its glass 23, the only one shown in FIG. 4. This glass comprises a base plate 2, identical to that of the first embodiment. The sockets 7 are temporarily attached to it in the same way. In this case, this base plate is not covered by a single one, but by three sapphire plates 24, 25, the plate 24 covering the middle part of the plate 2 and the plates 25 extending along the long sides of the plate 2. The plate 24 and the two plates 25, which have the same thickness, are perfectly juxtaposed and completely cover the plate 2. The two end zones of the plate 24, intended to extend above the middle of the box, are opacified in a decorative way, as in the first embodiment. As for the plates 25, they are entirely opaque and mask the bases 9 of the sockets 7. They can be made of colored sapphire or have a layer of metallization on their reverse. In addition, “V” grooves 26 are hollowed out through the plates 25. As this hollowing produces grooves with flared edges, they are formed in thicker plates, then the excess thickness is removed by grinding, after the plates have been bonded. 25 on the base plate 2, in order to obtain grooves 26 with straight edges, the sides of which constitute reflective facets, giving a decorative effect.

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In place of or in addition to the plates 25, similar plates could also be glued along the short sides of the plate 24, the latter being made shorter and possibly wider, so that the set of plates glued on the base plate 2 always completely cover the latter without overflow, of course concealing the seats 9 of the sockets 7.

In the third embodiment (fig. 5), the metallization layer, provided in the first embodiment to mask the upper face of the case middle and the seats of the glass fixing sleeves, is replaced by a metallic or precious or semi-precious stone frame 12a, in one or more pieces, which is glued under the plate 4. In order for the glue to set properly in the transparent area of the glass, it is however important that this frame is sufficiently slim. Preferably, its thickness will not exceed two tenths of a millimeter. This way of clouding the periphery of the glass is obviously also applicable in the first two embodiments. It goes without saying that such a frame is protected in the same way as the metallization described. Even made of very soft metal, it therefore gives the box an unalterable appearance.

Instead of the rods 16 of the first embodiment, it is one or more cut diamonds which, in this third embodiment, are mounted in the glass. For each diamond, a conical cell 32 is hollowed out for this purpose through the plate 4, into a part of the base plate 2. As these cells 32 do not pass through the glass 1, they do not compromise their sealing . In addition, the resulting weakening of the glass is completely negligible. The cylinder head 33 of a cut diamond 34 is then bonded in each of the cells 32. The adhesion of the glue 35 eliminates any risk of losing the brilliants 34. Furthermore, a brilliance. mounted in this way has more effect than if it were in a metal frame, because it receives light from all sides through the sapphire glass and the layer of glue 35, which is perfectly transparent.

io The fourth embodiment (fig. 6) differs from the previous ones first of all by the shape of the box, which is square. The glass 27 of this embodiment also comprises a base plate 28, which is square and which completely covers the upper face of the middle part 29. A central square plate 30, entirely transparent, and four plates 31, opaque or opacified in the same way as in the previous embodiments and of generally triangular shape, are bonded to the base plate 28, so as to completely cover it, without overflow, by concealing 2o the upper face of the middle part 29 and the seats fixing sleeves (not shown) of the glass 27 to the middle part 29.

In addition, four diamonds 34 are mounted in the glass 27 near the corners of the plate 30, as described in the third embodiment. Instead of showing time signs, as is the case in this embodiment, the brilliants could obviously be mounted in other places of the watch glass, for example at the corners of the case.

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3 drawing sheets

CH358382A 1982-06-10 1982-06-10 CH649436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH358382A CH649436A (en) 1982-06-10 1982-06-10

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH358382A CH649436A (en) 1982-06-10 1982-06-10
US06/499,229 US4473306A (en) 1982-06-10 1983-05-31 Wristwatch case
EP19830810227 EP0098240B1 (en) 1982-06-10 1983-06-01 Watch case
DE8383810227T DE3365844D1 (en) 1982-06-10 1983-06-01 Watch case
JP10102183A JPS645271B2 (en) 1982-06-10 1983-06-08

Publications (1)

Publication Number Publication Date
CH649436A true CH649436A (en) 1985-05-31

Family

ID=4259121

Family Applications (1)

Application Number Title Priority Date Filing Date
CH358382A CH649436A (en) 1982-06-10 1982-06-10

Country Status (5)

Country Link
US (1) US4473306A (en)
EP (1) EP0098240B1 (en)
JP (1) JPS645271B2 (en)
CH (1) CH649436A (en)
DE (1) DE3365844D1 (en)

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EP0125376A1 (en) * 1983-04-16 1984-11-21 RODI & WIENENBERGER Aktiengesellschaft Wrist watch
CH666981A (en) * 1987-01-22 1988-09-15
CH670185A (en) * 1987-05-12 1989-05-31 Decorative wrist watch face - has gold markers between two layers of glass on face, with one layer of photosensitive glass
CH672225B5 (en) * 1987-12-23 1990-05-15 Ebauchesfabrik Eta Ag
CH683738B5 (en) * 1990-02-05 1994-11-15 Montres Aernina Watch Werner A Watch with medal.
CH678909B5 (en) * 1990-03-06 1992-05-29 Rolex Montres
DE4218874C2 (en) * 1992-06-09 1994-11-10 Swarovski & Co Jewelry watch
CH690521A5 (en) * 1996-06-19 2000-09-29 Stettler Hans Ag Ice shows.
ITIM20030011A1 (en) * 2003-11-12 2005-05-13 Cosetta Schiavolini Particular watch glass, which allows
HK1083430A2 (en) * 2005-11-11 2006-06-30 Ng Hoi San Loby External watch case with lens made of artificial crystal glass and the manufacturing method for the same
EP2367077B1 (en) * 2010-03-16 2017-07-26 Montres Breguet SA Glass-bezel assembly for a timepiece and assembly method
US10052848B2 (en) * 2012-03-06 2018-08-21 Apple Inc. Sapphire laminates
ITMI20131343A1 (en) * 2013-08-05 2015-02-06 Dolce & Gabbana Srl Gems fastening system to the face of a watch and watch equipped with this gem fixing system
US9154678B2 (en) 2013-12-11 2015-10-06 Apple Inc. Cover glass arrangement for an electronic device
CA158517S (en) * 2014-03-24 2015-04-14 Winston Harry Sa Watch
DE202015008993U1 (en) * 2015-03-13 2016-06-09 Levitation AG Watch glass with at least one gemstone
US10406634B2 (en) 2015-07-01 2019-09-10 Apple Inc. Enhancing strength in laser cutting of ceramic components
JP6623848B2 (en) * 2016-03-08 2019-12-25 セイコーエプソン株式会社 Crowns and watches for watches
DE102016222905B4 (en) * 2016-11-21 2019-03-07 Realization Desal Ag Watch glass and method of making a watch glass
DE102017201676B4 (en) 2017-02-02 2019-08-14 Realization Desal Ag Watch glass with luminescent element

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
CH206230A (en) * 1938-03-10 1939-07-31 Solvil Des Montres Paul Ditish Timepiece.
US2179294A (en) * 1938-03-21 1939-11-07 Harold B Heit Diamond studded watch ornamentation
DE1079872B (en) * 1958-04-17 1960-04-14 Hermann Flad Gem setting
CH623448A (en) * 1977-06-09 1981-06-15 Glass for watch
CH622151A (en) * 1977-07-15 1981-03-31
JPS574571A (en) * 1980-06-10 1982-01-11 Citizen Watch Co Ltd Windshield glass with panel cover for digital display watch
JPS5730975A (en) * 1980-08-01 1982-02-19 Citizen Watch Co Ltd Case structure for digital wrist watch
JPS623746Y2 (en) * 1981-02-17 1987-01-28
WO1982004134A1 (en) * 1981-05-01 1982-11-25 Rado Sa Montres Waterproof watchcase

Also Published As

Publication number Publication date
JPS645271B2 (en) 1989-01-30
EP0098240B1 (en) 1986-09-03
JPS593384A (en) 1984-01-10
DE3365844D1 (en) 1986-10-09
EP0098240A1 (en) 1984-01-11
US4473306A (en) 1984-09-25

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