US3292362A - Watchcase - Google Patents

Watchcase Download PDF

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Publication number
US3292362A
US3292362A US452240A US45224065A US3292362A US 3292362 A US3292362 A US 3292362A US 452240 A US452240 A US 452240A US 45224065 A US45224065 A US 45224065A US 3292362 A US3292362 A US 3292362A
Authority
US
United States
Prior art keywords
watchcase
section
ring
truncated conical
bezel
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
US452240A
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English (en)
Inventor
Klingenberg Hans Ulrich
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.)
Individual
Original Assignee
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 US3292362A publication Critical patent/US3292362A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/02—Sealing crystals or glasses
    • 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
    • G04B37/0008—Cases for pocket watches and wrist watches
    • 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
    • G04B37/02—Evacuated cases; Cases filled with gas or liquids; Cases containing substances for absorbing or binding moisture or dust

Definitions

  • each watchcase section comprises a slightly truncated conical annular surface and a fiat annular shoulder adjacent to the truncated conical surface.
  • the truncated conical surfaces of both watchcase sections are adapted to each other in such a way that they come into mutual engagement upon a slight elastical deformation of at least one of said sections and remain gripped to each other due to the resistance opposed to a deformation by the material of the watchcase sections.
  • Fixing devices by means of such a snap fit are commonly used in the practice for securing for instance a bezel, a bottom, a watch movement or an enlargement ring to a case-band or a glass to a bezel.
  • a more specific object of the invention consists in providing a watchcase with an elastically yieldable ring having a truncated conical surface portion and fixed to one of said watchcase sections, and an annular surface portion located on the other watchcase section and having a shape adapted to the truncated conical surface portion of said one watchcase section for constituting a snap fit herewith.
  • the watchcase represented comprises a first section which constitutes the case-band 1.
  • This case-band 1 is circular and it is made in one piece with a bottom part (not shown) constituting the watchcase bottom as well known to those skilled in the art.
  • An annular groove 2 is provided in the inner surface of case-band 1 for fixing a watch movement therein by means of standard latching members.
  • An annular cylindrical shoulder 3 having a flat bottom surface is also provided in the same case-band surface and a plastic tightening gasket 4 of rectangular cross-section is located within shoulder 3.
  • a sapphire glass 5 having a fiat lower surface 6 is also placed within shoulder 3 so that the glass periphery lies on gasket 4.
  • the first watchcase section comprising caseband 1 and the glass thus fully enclose a space in which the watch movement is located.
  • the case-band further comprises an upper flat surface 10.
  • Surface 10 serves as abutting shoulder surface to a bezel 11 constituting a second watchcase section removably fixed to the first watchcase section comprising case-band 1.
  • Bezel 11 constitutes a means which retains glass 5 in place and prevents the same from falling out of its lodging if the air pressure accidentally increased in the watch movement space.
  • An inner bezel portion therefore extends over a chamferred peripheral area 14 of glass 5.
  • Bezel 11 is provided with an annular lodging 12 having a cylindrical wall surface on the inside of bezel 11 and a flat bottom surface adjacent to this cylindrical wall and forming an edge therewith.
  • An annular ring 13 is soldered to bezel 11 in the edge of lodging 12.
  • ring 13 has substantially a rectangular cross-section and a truncated conical shape.
  • the inner large surface of ring 13 has substantially the same opening angle as surface 8.
  • a small free space thus remains between ring 13 and the cylindrical wall of lodging 12 so that the lower free por tion of ring 13 can yield elastically in said space.
  • Bezel 11 and case-band 1 can both be made of a very hard material. Ring 13 always permits the bezel to be removably fixed to the case-band exactly in the same way as the bezel is snap fitted to the case-band with standard watchcases and this in spite of the fact that neither secion 1 nor section 11 of the watchcase can yield to any noticeable extent.
  • soldering ring 13 in lodging 12 along one of its small sides one could, in a modification, use a V- shaped and secure one of its branches against the cylin drical wall of lodging 12 for instance by soldering, by gluing or in any similar manner.
  • the bezel section of the watchcase could also have a portion surrounding the case-band. In this event this bezel section would advantageously carry wrist-band attaching lugs.
  • watchcase could of course comprise a removable bottom snap fitted to the case-band in exactly the same way as bezel 11 is snap fitted to case-band 1.
  • the watchcase according to the invention has not only the advantage that all its parts can be made of very hard materials, but also that of comprising fixing means to secure the watchcase parts to each other, which are extremely simple and enable a safe and aesthetic assembling of the watchcase.
  • ring 13 instead of being made of a well yieldable metal such as silvernickel or steel could also be made of an elastically yieldable plastic such as hardened natural or synthetic rubber. This ring could thus be given an O-shape and the side wall of lodging 12 be accordingly made truncated conical.
  • an elastically yieldable ring having a truncated conical surface portion and being formed of a separate piece from and fixed to one of said watchcase sections, the other watchcase section being provided with an annular surface portion having a shape adapted to fit the truncated conical surface portion of said ring for constituting a snap fit therewith.
  • a watchcase having two relatively hard rigid sections removably fixed together by means of a snap fit
  • annular shoulder provided in one of said watchcase sections said shoulder having a cylindrical Wall surface turned towards the inside of said one watchcase section and a bottom surface forming an edge with said cylindrical Wall surface
  • a truncated conical thin elastically yieldable ring of softer, more pliable material than said sections, having a rectangular cross-section and being fixed along one of its small sides to said one watchcase section in said edge of the shoulder thereof, and an annular surface portion provided on the other Watchcase section and having a shape adapted to fit said truncated conical ring for constituting a snap fit therewith by cooperation with one of the large surfaces thereof.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electric Clocks (AREA)
US452240A 1964-05-01 1965-04-30 Watchcase Expired - Lifetime US3292362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH571964A CH439124A (fr) 1964-05-01 1964-05-01 Dispositif de fixation à cran d'un premier élément, massif et indéformable, d'une boîte de montre à un autre élément de ladite boîte

Publications (1)

Publication Number Publication Date
US3292362A true US3292362A (en) 1966-12-20

Family

ID=4298222

Family Applications (1)

Application Number Title Priority Date Filing Date
US452240A Expired - Lifetime US3292362A (en) 1964-05-01 1965-04-30 Watchcase

Country Status (2)

Country Link
US (1) US3292362A (enrdf_load_stackoverflow)
CH (2) CH571964A4 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979902A (en) * 1974-05-22 1976-09-14 Kabushiki Kaisha Suwa Seikosha Mounting of a case band and a crystal bezel in a watch
US4417821A (en) * 1980-11-15 1983-11-29 Rodi & Wienenberger Ag Wrist watch
US4473305A (en) * 1981-06-01 1984-09-25 Montres Rado S.A. Watchcase having resilient snap-fit for rigid crystal
US4740935A (en) * 1979-02-12 1988-04-26 Montres Rado S.A. Watchcase having mechanism for securing crystal to case

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1454068A4 (enrdf_load_stackoverflow) * 1968-09-27 1971-02-15

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH249165A (fr) * 1946-03-28 1947-06-15 Brodbeck Otto Boîte de montre étanche.
GB660844A (en) * 1948-03-15 1951-11-14 Rolex Montres Improvements in and relating to a rim or bezel for watch case

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH249165A (fr) * 1946-03-28 1947-06-15 Brodbeck Otto Boîte de montre étanche.
GB660844A (en) * 1948-03-15 1951-11-14 Rolex Montres Improvements in and relating to a rim or bezel for watch case

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979902A (en) * 1974-05-22 1976-09-14 Kabushiki Kaisha Suwa Seikosha Mounting of a case band and a crystal bezel in a watch
US4740935A (en) * 1979-02-12 1988-04-26 Montres Rado S.A. Watchcase having mechanism for securing crystal to case
US4417821A (en) * 1980-11-15 1983-11-29 Rodi & Wienenberger Ag Wrist watch
US4473305A (en) * 1981-06-01 1984-09-25 Montres Rado S.A. Watchcase having resilient snap-fit for rigid crystal

Also Published As

Publication number Publication date
CH439124A (fr) 1967-02-15
CH571964A4 (enrdf_load_stackoverflow) 1967-02-15

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