WO2008029158A3 - Thermally compensating balance wheel - Google Patents

Thermally compensating balance wheel Download PDF

Info

Publication number
WO2008029158A3
WO2008029158A3 PCT/GB2007/003386 GB2007003386W WO2008029158A3 WO 2008029158 A3 WO2008029158 A3 WO 2008029158A3 GB 2007003386 W GB2007003386 W GB 2007003386W WO 2008029158 A3 WO2008029158 A3 WO 2008029158A3
Authority
WO
WIPO (PCT)
Prior art keywords
balance wheel
balance
inertia
compensate
moment
Prior art date
Application number
PCT/GB2007/003386
Other languages
French (fr)
Other versions
WO2008029158A2 (en
Inventor
Gideon Levingston
Original Assignee
Gideon Levingston
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 GB0617662A external-priority patent/GB0617662D0/en
Priority claimed from GB0701299A external-priority patent/GB0701299D0/en
Application filed by Gideon Levingston filed Critical Gideon Levingston
Priority to US12/440,548 priority Critical patent/US8100579B2/en
Priority to EP07804186A priority patent/EP2062101A2/en
Publication of WO2008029158A2 publication Critical patent/WO2008029158A2/en
Publication of WO2008029158A3 publication Critical patent/WO2008029158A3/en

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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • G04B17/222—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature with balances
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • G04B17/227—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature composition and manufacture of the material used

Abstract

A balance wheel having a thermally adjustable moment of inertia is described. In one aspect, the balance wheel includes radially movable compensation portions formed of shape memory material exhibiting a two-way memory effect. The radius of gyration of the balance wheel is therefore adjustable with temperature to compensate for thermoelastic effects in a balance spring attached to the balance wheel. In another aspect, a thermally stable balance wheel includes dynamically adjusting appendages whose expansion or contraction with temperature relative to the balance wheel cause a change in its moment of inertia. The invention can compensate for both 'normal' and 'abnormal' thermoelastic spring behaviour.
PCT/GB2007/003386 2006-09-08 2007-09-06 Thermally compensating balance wheel WO2008029158A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/440,548 US8100579B2 (en) 2006-09-08 2007-09-06 Thermally compensating balance wheel
EP07804186A EP2062101A2 (en) 2006-09-08 2007-09-06 Thermally compensating balance wheel

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0617662A GB0617662D0 (en) 2006-09-08 2006-09-08 Memory material temperature compensating balance wheel and shape changing elements and appendages
GB0617662.2 2006-09-08
GB0701299.0 2007-01-24
GB0701299A GB0701299D0 (en) 2007-01-24 2007-01-24 Temperature compensating balance wheel appendages

Publications (2)

Publication Number Publication Date
WO2008029158A2 WO2008029158A2 (en) 2008-03-13
WO2008029158A3 true WO2008029158A3 (en) 2008-05-15

Family

ID=39157611

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/003386 WO2008029158A2 (en) 2006-09-08 2007-09-06 Thermally compensating balance wheel

Country Status (3)

Country Link
US (1) US8100579B2 (en)
EP (1) EP2062101A2 (en)
WO (1) WO2008029158A2 (en)

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US8475034B2 (en) * 2006-04-12 2013-07-02 The Long Now Foundation Enhanced compound pendulums and systems
GB201001897D0 (en) * 2010-02-05 2010-03-24 Levingston Gideon Non magnetic mateial additives and processes for controling the thermoelastic modulus and spring stiffness within springs for precision instruments
EP2410387B1 (en) * 2010-07-19 2016-07-06 Nivarox-FAR S.A. balance wheel with inertia adjustment without insert
US9164485B2 (en) 2010-08-06 2015-10-20 Damasko Gmbh Oscillating body, mechanical oscillating system for wristwatches with such an oscillating body and watch with such an oscillating system
EP2420900B1 (en) * 2010-08-06 2019-02-27 DAMASKO GmbH Oscillating body, mechanical oscillating system for wristwatches with such an oscillating body and clock with such an oscillating system
EP2455825B1 (en) * 2010-11-18 2016-08-17 Nivarox-FAR S.A. Method for matching and adjusting a timepiece subassembly
US8995066B2 (en) 2011-09-06 2015-03-31 Kla-Tencor Corporation Passive position compensation of a spindle, stage, or component exposed to a heat load
EP2788825A1 (en) * 2011-12-09 2014-10-15 Cartier Création Studio S.A. Method for adjusting the chronometry of a timepiece movement intended to operate in a low-pressure atmosphere
EP2703909A1 (en) * 2012-09-04 2014-03-05 The Swatch Group Research and Development Ltd. Paired balance wheel - hairspring resonator
EP2765705B1 (en) * 2013-02-07 2015-08-19 The Swatch Group Research and Development Ltd. Resonator thermocompensated by a shape-memory metal
CN104007650B (en) * 2013-02-25 2017-09-05 精工电子有限公司 Temperature compensating type escapement and its manufacture method, clock machine core, mechanical clock
JP6025202B2 (en) * 2013-02-25 2016-11-16 セイコーインスツル株式会社 Temperature compensated balance, watch movement, and mechanical watch
JP6025203B2 (en) * 2013-02-25 2016-11-16 セイコーインスツル株式会社 Temperature-compensated balance, movement for watch, mechanical watch, and method for manufacturing temperature-compensated balance
EP2881804B1 (en) * 2013-12-09 2017-08-02 Montres Breguet S.A. Hairspring-stud assembly for timepiece
WO2015140332A2 (en) * 2014-03-21 2015-09-24 Hublot Sa, Genève Rotary clock member, clock oscillator
CN107615182B (en) * 2015-06-15 2020-02-07 西铁城时计株式会社 Speed regulator for clock
CH711336A2 (en) * 2015-07-16 2017-01-31 Swatch Group Res & Dev Ltd Microsystem for controlling the running of a clock oscillator.
US10449804B1 (en) * 2015-12-11 2019-10-22 United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration Superelastic tire
EP3217228B1 (en) * 2016-03-07 2019-08-28 Montres Breguet S.A. Bimetal device sensitive to temperature changes
EP3217229B1 (en) * 2016-03-07 2020-01-01 Montres Breguet S.A. Adjustable auxiliary thermal compensation system
JP6598733B2 (en) * 2016-06-01 2019-10-30 シチズン時計株式会社 Speed control device for balance wheel and watch
EP3502786A1 (en) * 2017-12-22 2019-06-26 The Swatch Group Research and Development Ltd Balance for timepiece and method for manufacturing such a balance

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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH129338A (en) * 1927-09-10 1928-12-17 Zenith Montres Compensating balance.
US1982726A (en) * 1931-04-02 1934-12-04 Ditisheim Paul Process of manufacturing bimetallic appendixes for monometallic balances
US5617377A (en) * 1995-12-13 1997-04-01 Perret, Jr.; Gerard A. Watchband connector pin utilizing shape memory material
EP1182522A1 (en) * 2000-08-22 2002-02-27 Conseils et Manufactures VLG SA Assembling device
WO2005017631A1 (en) * 2003-08-13 2005-02-24 Fore Eagle Co Ltd Thermally-compensated balance wheel

Also Published As

Publication number Publication date
EP2062101A2 (en) 2009-05-27
WO2008029158A2 (en) 2008-03-13
US8100579B2 (en) 2012-01-24
US20100034057A1 (en) 2010-02-11

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