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1. WO2004008259 - MECHANICAL OSCILLATOR SYSTEM

Publication Number WO/2004/008259
Publication Date 22.01.2004
International Application No. PCT/GB2003/003000
International Filing Date 10.07.2003
Chapter 2 Demand Filed 09.02.2004
IPC
F16F 1/366 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
1Springs
36made of plastics, e.g. rubber; made of material having high internal friction
366made of fibre reinforced plastics
G04B 17/06 2006.01
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS
17Mechanisms for stabilising frequency
04Oscillators acting by spring tension
06Oscillators with hairsprings, e.g. balance
G04B 17/22 2006.01
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS
17Mechanisms for stabilising frequency
20Compensation of mechanisms for stabilizing frequency
22for the effect of variations of temperature
CPC
F16F 1/3665
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
1Springs
36made of rubber or other material having high internal friction, ; e.g. thermoplastic elastomers
366made of fibre-reinforced plastics, ; i.e. characterised by their special construction from such materials
3665Wound springs
G04B 17/063
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
17Mechanisms for stabilising frequency
04Oscillators acting by spring tension
06Oscillators with hairsprings, e.g. balance
063Balance construction
G04B 17/066
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
17Mechanisms for stabilising frequency
04Oscillators acting by spring tension
06Oscillators with hairsprings, e.g. balance
066Manufacture of the spiral spring
G04B 17/227
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
17Mechanisms for stabilising frequency
20Compensation of mechanisms for stabilising frequency
22for the effect of variations of temperature
227composition and manufacture of the material used
Y10T 74/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
74Machine element or mechanism
10High frequency vibratory devices
Applicants
  • LEVINGSTON, Gideon [GB]/[FR]
Inventors
  • LEVINGSTON, Gideon
Agents
  • CALDERBANK, T., Roger
Priority Data
02/0880212.07.2002FR
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MECHANICAL OSCILLATOR SYSTEM
(FR) SYSTEME D'OSCILLATEUR MECANIQUE
Abstract
(EN)
A mechanical oscillator system comprising a balance wheel and a spiral or helicoidal balance spring for use in horological mechanisms or other precision instruments. The balance spring is made of a non-magnetic composite, polymer, carbon or ceramic material, preferably a composite material of carbon fibres in a polymer, carbon or ceramic matrix, and the balance wheel is made from a non-magnetic ceramic. The values of the thermal expansion coefficients for the balance spring and balance wheel are similar, very small and stable over a wide temperature range. The expansion coefficients in the axial sense of the spring and of the balance wheel are of opposite sign and they compensate one another. The density of these materials is smaller than that of the currently used metals. Through this combination of materials it is possible to obtain significant advantages and a higher level of accuracy and stability compared with metal oscillator systems.
(FR)
L'invention concerne un système d'oscillateur mécanique comprenant une roue de balancier et un ressort de balancier en spirale ou en hélice à utiliser dans des mécanismes d'horlogerie ou dans d'autres instruments de précision. Le ressort de balancier est constitué d'un composite non magnétique, d'un polymère, d'une matière en carbone ou en céramique, de préférence une matière composite en fibres de carbone d'un polymère, une matrice en carbone ou en céramique, et la roue de balancier est constituée d'une céramique non magnétique. Les valeurs des coefficients de dilatation thermique pour le ressort de balancier et pour la roue de balancier sont analogues, très faibles et stables dans une grande plage de température. Les coefficients de dilatation dans le sens axial du ressort et de la roue de balancier présentent des signes opposés et se compensent mutuellement. La densité de ces matières est inférieure à celle des métaux couramment utilisés. Grâce à cette combinaison de matières, il est possible d'obtenir des avantages considérables et un niveau élevé de précision et de stabilité en comparaison à des systèmes d'oscillateur métalliques.
Also published as
US2006225526
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