US3706198A - Sealing structure in a waterproof watch - Google Patents

Sealing structure in a waterproof watch Download PDF

Info

Publication number
US3706198A
US3706198A US203111A US3706198DA US3706198A US 3706198 A US3706198 A US 3706198A US 203111 A US203111 A US 203111A US 3706198D A US3706198D A US 3706198DA US 3706198 A US3706198 A US 3706198A
Authority
US
United States
Prior art keywords
case
watch
gasket
sealing structure
rim
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
US203111A
Other languages
English (en)
Inventor
Takekazu Fukushima
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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
Priority claimed from JP11772170U external-priority patent/JPS5017401Y1/ja
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Application granted granted Critical
Publication of US3706198A publication Critical patent/US3706198A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/084—Complete encasings for wrist or pocket watches without means for hermetic sealing of winding stem or crown
    • 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
    • G04B37/11—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches

Definitions

  • An improved method of sealing a case-back to a case-body in a waterproof watch utilizes a synthetic resin gasket or packing between an exterior cylindrical surface of the case-back and an interior cylindrical surface of the case-body, the dimensions being such that the gasket is compressed radially, thus ensuring water tightness between the case-back and the case-body.
  • the gasket may be so shaped that it mounts the watch mechanism securely within the case-body.
  • an object of the present invention is to provide a sealing structure for a waterproof watch in which the necessary seal is achieved by means of radial rather than axial compression.
  • Another object of the present invention is to provide a reduction in the number of parts necessary for effecting the sealing structure and for mounting the watch mechanism within the case-body.
  • a further object of the invention is to provide a sealing structure which makes possible a reduction in the overall size of the watch and which enhances the appearance of the watch.
  • the invention accordingly comprises an article of manufacture possessing the features, properties, and the relation of elements which will be exemplified in the article hereinafter described, and the scope of the invention will be indicated in the claims.
  • FIG. 1 is a sectional view of a conventional watch which depends on compression in an axial direction for sealing the case-back to the case-body;
  • FIG. 2 is a sectional view of a watch in accordance with the present invention wherein sealing between the case-body and the case-back is achieved by means of radial compression of a gasket;
  • FIG. 3 is a sectional view of a conventional watch in which sealing is achieved by means of axial compression and in which the gasket is used to position a member which holds the watch mechanism within the case-body;
  • FIG. 4 is a sectional view of a watch in accordance with the present invention in which scaling is achieved by means of radial compression and in which the gasket also serves to mount the watch mechanism within the case-body.
  • case-back 12 extends outward beyond gasket 13 and has a skirt 17 which seats against case-body 11 at the surface 18.
  • the case-back l2, consequently, must extend well beyond gasket 13.
  • case-back of the present invention is sealed to the case-body by radial compression.
  • FIG. 2 where case-body I9 is sealed to case-back 21 by radial force exerted against gasket 22.
  • the sealing surfaces are 23 and 24.
  • Sealing surface 23 is the exterior surface of rim 25 and sealing surface 24 is an interior surface of case-body 19.
  • the diameter of exterior surface 26 of case-body 19 is small relative to the diameter of case-body II of the conventional watch.
  • tolerances are no longer critical since snap-action is not involved, and the diameter of the case-back is substantially decreased over what it is in a conventional watch.
  • the conventional watch shown in FIG. 3 differs from that in FIG. I in that an annular ring 29 seats on gasket I3 and serves as a mount for watch mechanism 27 within case-body 11.
  • seal between the case-body l9 and the caseback 21 is effected by radial compression of gasket 22.
  • gasket 22 extends axially into a portion 28 which serves the same function as annulus 29 in a conventional watch.
  • gasket 22 having portion 28, and made of compressible, deformable, synthetic resin serves the double function of sealing a case-back to a case-body and mounting a watch mechanism within a case-body.
  • tolerances of manufacture are not so critical. The number of parts necessary is smaller, both the case-back and the casebody may be smaller in diameter and protection of watch mechanism 27 is provided by the fact that gasket 28 is deformable. The fact that the case-body and caseback are smaller enhances the appearance of the watch.
  • brim 31 extends beyond rim 25 and gasket 22 and serves to locate case-body 19 in the axial direction.
  • a sealing structure of a water-proof watch comprising a case-back, a rim integral with said case-back and having an exterior surface, a case-body having an interior surface and a gasket compressed radially between said exterior surface of said rim and said interior surface of said case-body wherein said case-back has a brim extending radially beyond said rim, said case-body being seated directly on said brim thereby precisely locating said case-back axially with respect to said case-body and the watch movement, said watch movement being insertable into and removable from said case-body through the rear of said watch, said gasket serving'as a mount for said watch movement.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Gasket Seals (AREA)
  • Casings For Electric Apparatus (AREA)
  • Adornments (AREA)
  • Toys (AREA)
US203111A 1970-11-28 1971-11-24 Sealing structure in a waterproof watch Expired - Lifetime US3706198A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11772270 1970-11-28
JP11772170U JPS5017401Y1 (enrdf_load_stackoverflow) 1970-11-28 1970-11-28

Publications (1)

Publication Number Publication Date
US3706198A true US3706198A (en) 1972-12-19

Family

ID=26455788

Family Applications (1)

Application Number Title Priority Date Filing Date
US203111A Expired - Lifetime US3706198A (en) 1970-11-28 1971-11-24 Sealing structure in a waterproof watch

Country Status (3)

Country Link
US (1) US3706198A (enrdf_load_stackoverflow)
CH (2) CH586924B5 (enrdf_load_stackoverflow)
GB (1) GB1371224A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521889A (en) * 1993-05-28 1996-05-28 Walca Sa Watch having a fluid-tight rotary crystal or crystal-bezel unit
EP3404494A1 (fr) * 2017-05-16 2018-11-21 MB & F Holding SA Boite de montre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH642219B (fr) * 1980-11-10 Lassale Jean Sa Boite de montre etanche.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721920A (en) * 1952-07-17 1955-01-12 Charles Jules Juillerat Waterproof shock-absorbing watch case
CH353686A (fr) * 1959-04-01 1961-04-15 Vaurillon Emile Antoine Boîte, notamment pour montre, contenant un accumulateur d'électricité
GB904290A (en) * 1960-01-21 1962-08-29 Boites La Centrale S A Fab De Waterproof watch
CH472719A (fr) * 1966-10-14 1969-06-30 Steimann Jean Boîte de montre étanche

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721920A (en) * 1952-07-17 1955-01-12 Charles Jules Juillerat Waterproof shock-absorbing watch case
CH353686A (fr) * 1959-04-01 1961-04-15 Vaurillon Emile Antoine Boîte, notamment pour montre, contenant un accumulateur d'électricité
GB904290A (en) * 1960-01-21 1962-08-29 Boites La Centrale S A Fab De Waterproof watch
CH472719A (fr) * 1966-10-14 1969-06-30 Steimann Jean Boîte de montre étanche

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521889A (en) * 1993-05-28 1996-05-28 Walca Sa Watch having a fluid-tight rotary crystal or crystal-bezel unit
EP3404494A1 (fr) * 2017-05-16 2018-11-21 MB & F Holding SA Boite de montre
WO2018210674A1 (fr) 2017-05-16 2018-11-22 Mb & F Holding Sa Boite de montre

Also Published As

Publication number Publication date
CH586924B5 (enrdf_load_stackoverflow) 1977-04-15
GB1371224A (en) 1974-10-23
CH1726071A4 (enrdf_load_stackoverflow) 1976-10-29

Similar Documents

Publication Publication Date Title
US3640065A (en) Watertight watchcase for wristwatches
US3130539A (en) Watch crown seal
US3817025A (en) Fluid tight mounting of crystal in watch case
US4967402A (en) Sealed watchcase
US3706198A (en) Sealing structure in a waterproof watch
JPS5316380Y2 (enrdf_load_stackoverflow)
US3729924A (en) Watertight watch case and watch
US3756017A (en) Watch case
US4391533A (en) Back cover fixing structure for wristwatch
US3828549A (en) Watertight watchcase
KR840001344A (ko) 시계 케이스
US2382728A (en) Waterproof watch
GB1153764A (en) Watertight Watch Case
US3688492A (en) Bezel, crystal and case assembly in a water-proof watch
US3831372A (en) Watertight watchcase
US3792576A (en) Watertight watch
US3676997A (en) Structure for sealing a watch crystal in a waterproof watch
US2773347A (en) Winding crown for timepiece movement
US4117658A (en) Waterproof watch case
US3545197A (en) Watertight watch case with oval crystal
GB1566543A (en) Arrangement for holding a watch glass on a watch case
GB1065162A (en) Watch case
US3676996A (en) Waterproof watch case
US3722208A (en) Hermetic watch-case
US3744238A (en) Rectangular watertight watch case