GB1374727A - Sealed evacuated and pressurized watch cases - Google Patents

Sealed evacuated and pressurized watch cases

Info

Publication number
GB1374727A
GB1374727A GB1201973A GB1201973A GB1374727A GB 1374727 A GB1374727 A GB 1374727A GB 1201973 A GB1201973 A GB 1201973A GB 1201973 A GB1201973 A GB 1201973A GB 1374727 A GB1374727 A GB 1374727A
Authority
GB
United Kingdom
Prior art keywords
piston
ring
compartment
cavity
recess
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
Application number
GB1201973A
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
Original Assignee
Ervin Piquerez SA
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 Ervin Piquerez SA filed Critical Ervin Piquerez SA
Publication of GB1374727A publication Critical patent/GB1374727A/en
Expired legal-status Critical Current

Links

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
    • G04B37/02—Evacuated cases; Cases filled with gas or liquids; Cases containing substances for absorbing or binding moisture or dust

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1374727 Watches ERVIN PIQUEREZ SA 13 March 1973 [29 March 1972] 12019/73 Heading G3T A sealed watch case which is normally under pressure or vacuum has a leakage indicator comprising a piston 4 slidably mounted in a bore which is closed at one end by a transparent member 1 to form a cavity 5 and is open at the other end to the watch case interior, the piston having a hollow interior which is divided by a bi-stable metallic membrane 12 into a compartment 14 containing a gas and a compartment 15 filled with an opaque liquid and connected to the cavity 5 by a channel 11. The indicator as shown comprises a ring 3 glued in a recess 2 in the watch glass 1. The watch case is under vacuum so that the piston 4 is spaced from the face of the recess 2 and a blue disc is visible through the glass since the opaque liquid, which is an oil dyed blue, fills the cavity 5. If vacuum is lost, the piston is displaced in the ring 3 into the recess 2 Fig. 2 (not shown) and the membrane 12 takes up its other position thus enlarging the compartment 15. The indicator then displays a blue ring surrounding the metallic end of the piston. A screw 7 and O-ring 8 are fitted to seal the cavity 5 after assembly of the piston in the ring 3. The compartment 14, which is filled with air at atmospheric pressure, may alternatively be provided inside a pair of metallic membranes welded together at their edges and floating inside the piston 4. The member 1 may be a special glass mounted in the dial.
GB1201973A 1972-03-29 1973-03-13 Sealed evacuated and pressurized watch cases Expired GB1374727A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH464372A CH567296A (en) 1972-03-29 1972-03-29

Publications (1)

Publication Number Publication Date
GB1374727A true GB1374727A (en) 1974-11-20

Family

ID=4279952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1201973A Expired GB1374727A (en) 1972-03-29 1973-03-13 Sealed evacuated and pressurized watch cases

Country Status (7)

Country Link
US (1) US3811401A (en)
JP (1) JPS5246697B2 (en)
CH (2) CH464372A4 (en)
DE (1) DE2313654C3 (en)
FR (1) FR2177729B1 (en)
GB (1) GB1374727A (en)
IT (1) IT979188B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5516678U (en) * 1978-07-18 1980-02-01
GB2128378B (en) * 1982-08-24 1986-01-02 Citizen Watch Co Ltd Water-resisting structure for a watch
US5357847A (en) * 1991-04-17 1994-10-25 Hytork Actuators Limited Pressure vessels having end closures and retainers
CH691334A5 (en) * 1997-08-28 2001-06-29 Asulab Sa Equipment likely to be immersed and having a sound transducer.
WO2011016884A1 (en) * 2009-04-30 2011-02-10 Lawrence Livermore National Security, Llc Passive blast pressure sensor
US8322916B2 (en) * 2010-12-15 2012-12-04 Jeremy James Patt Thermal expansion compensator for liquid-filled watches
CH704673A2 (en) * 2011-03-22 2012-09-28 Montres Breguet Sa Cup-shaped removable acoustic radiation membrane for musical/striking watch, has holding member engaging with inner stop member of bottom of case to limit bending of membrane following over/under pressure based on environmental conditions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656674A (en) * 1948-04-16 1953-10-27 Bondy Wilhelm Waterproof watchcase
US2959911A (en) * 1954-11-22 1960-11-15 Piquerez Ervin Fluidtight watch case
US3030763A (en) * 1959-06-23 1962-04-24 Hans U Klingenberg Waterproof watch casing
US3675722A (en) * 1971-04-05 1972-07-11 Gen Fire Extinguisher Corp Pressure indicator

Also Published As

Publication number Publication date
CH464372A4 (en) 1975-04-15
DE2313654C3 (en) 1975-05-07
US3811401A (en) 1974-05-21
FR2177729B1 (en) 1976-04-09
JPS4916468A (en) 1974-02-13
JPS5246697B2 (en) 1977-11-26
IT979188B (en) 1974-09-30
DE2313654A1 (en) 1973-10-25
CH567296A (en) 1975-09-30
FR2177729A1 (en) 1973-11-09
DE2313654B2 (en) 1974-09-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees