US3555812A - Fluidtight and tamper-proof timepiece case - Google Patents

Fluidtight and tamper-proof timepiece case Download PDF

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Publication number
US3555812A
US3555812A US785548A US3555812DA US3555812A US 3555812 A US3555812 A US 3555812A US 785548 A US785548 A US 785548A US 3555812D A US3555812D A US 3555812DA US 3555812 A US3555812 A US 3555812A
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US
United States
Prior art keywords
crystal
timepiece case
case
fluidtight
proof
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
US785548A
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English (en)
Inventor
Ervin Piquerez
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.)
Ervin Piquerez SA
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Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3555812A publication Critical patent/US3555812A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D1/00—Gripping, holding, or supporting devices
    • G04D1/10—Devices for opening or closing watch bottoms or covers
    • 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
    • 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/02—Sealing crystals or glasses
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/06—Devices for shaping or setting watch glasses
    • G04D3/067—Setting or taking apart, whereby a temporary deformation of the glass may take place

Definitions

  • This invention is concerned with a fiuidtight and tamperproof timepiece case.
  • the bottom of the crystal in question must be provided with notches, grooves, shoulder or at least must have on their periphery a sufficiently large cylindrical surface to make possible their grasping by means of a suitable tool and their extraction from their housing, the presence of these extracting means allowing naturally anyone having the tool to open the case in question, and in particular, people not competent enough to effect possibly required repairs. Moreover, upon re-assembly, it can happen that these people may not be able to close the case with the care or a technique which would give the previous fiuidtight disposition.
  • the present invention precisely has for its object a fluidtight timepiece case in which the bottom and/or the crystal are driven in suitable hollows in the middle and which has for its purpose to obviate these drawbacks.
  • This timepiece case is characterised by the fact that the said bottom and/or said crystal have a shape which opposes itself to all grasping aimed at removing them from their housing, by the fact that the opening of the case requires the previous making of at least one notch to allow the removal of said bottom and/or said crystal.
  • FIGS. 1 and 2 are partial cross-sectional views of a timepiece case according to the invention for two embodiments thereof.
  • FIG. 3 is a partial cross-sectional view of a timepiece case having an extraction ring screwed on the crystal.
  • FIG. 4 is a partial cross-sectional view of a timepiece case with a temporary crystal.
  • FIGS. 5, 6 and 7 are plane views showing respectively three ways for removing the crystal of FIGS. 1 and 2.
  • 1 identifies the crystal
  • 2 the middle
  • 3 the horizontal side of the housing made in the middle
  • 4 is the vertical side of this housing against which tensioning ring presses the heel of the crystal 3,555,812 Patented Jan. 19, 1971 while ensuring its fastening and the fluidtightness of the assembly.
  • FIG. 1 An outer shoulder and a crystal shown in FIG. 1 has a rounded shape 6 intended to prevent grasping of this crystal by means of an appropriate plier.
  • a conical part 7 fulfills the same function.
  • FIG. 3 shows a timepiece case having an extraction ring 8 screwed in crystal 1.
  • This ring 8 will have gripping means, for example, holes when it is desired to remove it.
  • FIG. 4 shows an example of a temporary crystal with which the case according to the invention can be provided until it is delivered to the client.
  • This crystal has a circular groove 9 allowing its ready removal by a watch-maker before the placing of the final crystal and delivery to the client.
  • FIGS. 5, 6 and 7 show a notch made in the shape of a groove along the complete periphery of the crystal
  • FIG. 6 shows a solution where there has been made three notches in the shape of the segment of the circle positioned one from the other
  • FIG. 7 shows a solution which is applicable only to organic glasses where there have been made three pointed notches 12 also at 120 one from the other, by means of a heated tool.
  • the watch can be protected as soon as it leaves fabrication by means of a temporary in expensive crystal which has means allowing its ready removal before sale of the watch. It is thus possible to immediately effect before delivery the checking necessary to the good operation of the mechanism.
  • the temporary glass is replaced by a final crystal which is without means allowing its removal.
  • only a competent specialist can make on the final glass the notches which make possible its removal. It is evident that the glass in question is then no longer usable but this procedure ensures that upon each repair the crystal is replaced by a new crystal and that the same is put in place by a specialist who is competent which is an essential condition for obtaining a long lasting fiuidtightness.
  • the crystals made according to the invention can be made either of natural or organic glass. The only difference will be in the means used for making the notches which allow removal of the crystal.
  • a watch casing comprising a middle ring, a back cover attached to one side of said middle ring, and a crystal attached to the other side of said middle ring, said cover and crystal each having smooth continuous outer surfaces and sloped peripheries externally of said middle ring, whereby said cover and crystal are secure within said middle ring and said smooth continuous surfaces oppose all grasping action of a tool intended for use in removing said crystal and cover.
  • a watch casing comprising a middle ring, a crystal attached to said middle ring, and an extraction ring positioned in grasping contact with the periphery of said crystal and in contact with said middle ring, said crystal having smooth continuous surfaces and a sloped periphery externally of said extraction ring and middle ring.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electric Clocks (AREA)
US785548A 1967-12-27 1968-12-20 Fluidtight and tamper-proof timepiece case Expired - Lifetime US3555812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1820167A CH492247A (fr) 1967-12-27 1967-12-27 Boîte de montre étanche

Publications (1)

Publication Number Publication Date
US3555812A true US3555812A (en) 1971-01-19

Family

ID=4431238

Family Applications (1)

Application Number Title Priority Date Filing Date
US785548A Expired - Lifetime US3555812A (en) 1967-12-27 1968-12-20 Fluidtight and tamper-proof timepiece case

Country Status (4)

Country Link
US (1) US3555812A (cs)
CH (2) CH1820167A4 (cs)
DE (1) DE1810126A1 (cs)
FR (1) FR1599794A (cs)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683615A (en) * 1970-06-09 1972-08-15 Piquerez Sa Ervin Tamper proof watch cases
US4214486A (en) * 1978-09-28 1980-07-29 Dresser Industries, Inc. Sealed casing for pressure gauge
US5224078A (en) * 1991-12-20 1993-06-29 Mark Mallin Watch with changeable transparent face cover
US20050215392A1 (en) * 2002-11-26 2005-09-29 Bayerische Motoren Werke Ag Belt drive for auxiliary units of an internal combustion engine
USD755644S1 (en) * 2013-01-22 2016-05-10 Luxury Timepieces International Sa Watch

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10236746A1 (de) * 2002-08-10 2004-02-19 Bayerische Motoren Werke Ag Brennkraftmaschine mit einer Antriebsanordnung für Aggregat-Module
DE10255077A1 (de) * 2002-11-26 2004-06-03 Bayerische Motoren Werke Ag Von einem Riementrieb für Hilfsaggregate einer Brennkraftmaschine angetriebenes Reibradgetriebe für ein Nebenaggregat
DE10255079A1 (de) * 2002-11-26 2004-06-03 Bayerische Motoren Werke Ag Einem Aggregate-Riementrieb einer Brennkraftmaschine zugeordnetes Reibradgetriebe für ein gesondertes Nebenaggregat
DE10255073A1 (de) * 2002-11-26 2004-06-03 Bayerische Motoren Werke Ag Mit einem Reibradgetriebe kombinierter Riementrieb zum Antrieb von Aggregaten einer Brennkraftmaschine
DE10255075A1 (de) * 2002-11-26 2004-06-03 Bayerische Motoren Werke Ag In einem Riementrieb für Aggregate einer Brennkraftmaschine vorgesehenes Reibradgetriebe für ein gesondertes Nebenaggregat
DE102004025542A1 (de) * 2004-05-25 2005-12-22 Ina-Schaeffler Kg Reibradantrieb

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683615A (en) * 1970-06-09 1972-08-15 Piquerez Sa Ervin Tamper proof watch cases
US4214486A (en) * 1978-09-28 1980-07-29 Dresser Industries, Inc. Sealed casing for pressure gauge
US5224078A (en) * 1991-12-20 1993-06-29 Mark Mallin Watch with changeable transparent face cover
US20050215392A1 (en) * 2002-11-26 2005-09-29 Bayerische Motoren Werke Ag Belt drive for auxiliary units of an internal combustion engine
USD755644S1 (en) * 2013-01-22 2016-05-10 Luxury Timepieces International Sa Watch

Also Published As

Publication number Publication date
CH1820167A4 (cs) 1970-02-27
CH492247A (fr) 1970-02-27
FR1599794A (cs) 1970-07-20
DE1810126A1 (de) 1969-07-10

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