EP3736639A1 - Herstellungsverfahren einer spiralfeder für uhrwerk - Google Patents
Herstellungsverfahren einer spiralfeder für uhrwerk Download PDFInfo
- Publication number
- EP3736639A1 EP3736639A1 EP19173114.0A EP19173114A EP3736639A1 EP 3736639 A1 EP3736639 A1 EP 3736639A1 EP 19173114 A EP19173114 A EP 19173114A EP 3736639 A1 EP3736639 A1 EP 3736639A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- deformation
- percentage
- total
- spiral spring
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000010949 copper Substances 0.000 claims abstract description 18
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 229910001029 Hf alloy Inorganic materials 0.000 claims abstract description 7
- 229910001257 Nb alloy Inorganic materials 0.000 claims abstract description 6
- 238000000151 deposition Methods 0.000 claims abstract description 6
- 229910000570 Cupronickel Inorganic materials 0.000 claims abstract description 4
- 229910018104 Ni-P Inorganic materials 0.000 claims abstract description 4
- 229910018536 Ni—P Inorganic materials 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 4
- QDWJUBJKEHXSMT-UHFFFAOYSA-N boranylidynenickel Chemical compound [Ni]#B QDWJUBJKEHXSMT-UHFFFAOYSA-N 0.000 claims abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052737 gold Inorganic materials 0.000 claims abstract description 4
- 239000010931 gold Substances 0.000 claims abstract description 4
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000004332 silver Substances 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 16
- 239000010955 niobium Substances 0.000 claims description 14
- 238000005096 rolling process Methods 0.000 claims description 13
- 229910052758 niobium Inorganic materials 0.000 claims description 12
- 229910052715 tantalum Inorganic materials 0.000 claims description 11
- 229910052721 tungsten Inorganic materials 0.000 claims description 11
- 229910052726 zirconium Inorganic materials 0.000 claims description 11
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000011282 treatment Methods 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 5
- 239000011651 chromium Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 229910052718 tin Inorganic materials 0.000 description 5
- 229910052720 vanadium Inorganic materials 0.000 description 5
- 238000005491 wire drawing Methods 0.000 description 5
- 229910052745 lead Inorganic materials 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000942 Elinvar Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- AUTWRGZQAIMMQA-UHFFFAOYSA-N [Hf].[Nb] Chemical compound [Hf].[Nb] AUTWRGZQAIMMQA-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
- G04B17/066—Manufacture of the spiral spring
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
-
- 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
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
-
- 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
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
- G04B17/063—Balance construction
Definitions
- the invention relates to a method of manufacturing a spiral spring intended to equip a balance of a clockwork movement. It also relates to the spiral spring resulting from this process produced in an Nb-Hf alloy.
- spiral springs are also centered on the concern for thermal compensation, so as to guarantee regular chronometric performance. This requires obtaining a thermoelastic coefficient close to zero. We are also looking to produce spiral springs having limited sensitivity to magnetic fields.
- An object of the present invention is to provide a method of manufacturing a spiral spring intended to equip a balance with a clockwork movement making it possible to facilitate deformation, and more particularly to obtain easy rolling.
- the invention relates to a method of manufacturing a spiral spring intended to equip a balance of a clockwork movement and made of an alloy comprising niobium and hafnium.
- the NbHf alloy blank used in the present invention does not include other elements except for possible and inevitable traces. This prevents the formation of fragile phases.
- the carbon content is less than or equal to 0.04% by weight of the total, in particular less than or equal to 0.02% by weight of the total, or even less than or equal to 0.015% by weight of the total.
- the iron content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.02% by weight of the total, or even less than or equal to 0.005% by weight of the total.
- the hydrogen content is less than or equal to 0.01% by weight of the total, in particular less than or equal to 0.0035% by weight of the total, or even less than or equal to 0.001% by weight of the total.
- the nickel content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.01% by weight of the total, or even less than or equal to 0.002% by weight of the total.
- the aluminum content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.01% by weight of the total, or even less than or equal to 0.002% by weight of the total.
- the chromium content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.01% by weight of the total, or even less than or equal to 0.002% by weight of the total.
- the manganese content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.01% by weight of the total, or even less than or equal to 0.002% by weight of the total.
- the vanadium content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.01% by weight of the total, or even less than or equal to 0.002% by weight of the total.
- the tin content is less than or equal to 0.01% by weight of the total, in particular less than or equal to 0.0035% by weight of the total, or even less than or equal to 0.001% by weight of the total.
- the magnesium content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.01% by weight of the total, or even less than or equal to 0.002% by weight of the total.
- the molybdenum content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.01% by weight of the total, or even less than or equal to 0.002% by weight of the total.
- the lead content is less than or equal to 0.05% by weight of the total, in particular less than or equal to 0.01% by weight of the total, or even less than or equal to 0.002% by weight of the total.
- the cobalt content is less than or equal to 0.01% by weight of the total, in particular less than or equal to 0.0035% by weight of the total, or even less than or equal to 0.001% by weight of the total.
- the boron content is less than or equal to 0.005% by weight of the total, in particular less than or equal to 0.0001% by weight of the total.
- the deposition step which is more particularly the subject of the invention consists in depositing a layer of a ductile material chosen from the group comprising copper, nickel, cupro-nickel, cupro-manganese, gold , silver, nickel-phosphorus Ni-P and nickel-boron Ni-B, to facilitate wire-forming.
- a ductile material chosen from the group comprising copper, nickel, cupro-nickel, cupro-manganese, gold , silver, nickel-phosphorus Ni-P and nickel-boron Ni-B, to facilitate wire-forming.
- the thickness of the layer of ductile material deposited is chosen so that the ratio of ductile material surface / surface area of the NbHf alloy for a given wire section is less than 1, preferably less than 0.5, and more preferably between 0.01 and 0.4.
- the layer of ductile material can have a thickness of 7 ⁇ m for an NbHf alloy section of 0.086 mm in diameter. This corresponds to a ratio between the area of copper (0.002 mm 2 ) and the area of NbHf (0.0058 mm 2 ) of 0.35.
- Such a thickness of ductile material, and in particular of copper allows the Cu / NbHf composite material to be easily drawn, drawn and rolled. Indeed, the thickness of copper is optimized so that the tip, created by filing or by hot drawing, necessary for the introduction of the wire into the die during drawing or drawing is covered with copper.
- the deformation step generally denotes one or more deformation treatments, which may include wire drawing and / or rolling.
- Wire drawing may require the use of one or more dies during the same deformation step or during different deformation steps if necessary.
- Wire drawing is carried out until a wire of round section is obtained.
- Rolling can be carried out in the same deformation step as wire drawing or in another subsequent deformation step.
- the last deformation treatment applied to the alloy is rolling, preferably with a rectangular profile compatible with the entry section of a stranding spindle.
- the annealing prior to the deformation step as well as the intermediate annealing carried out between the deformation steps is carried out during a period of between 5 minutes and 2 hours, preferably between 10 minutes and 1 hour at a temperature of between 650 ° C and 1750 ° C.
- the method of the invention enables the production, and more particularly the shaping, of a balance spring for a balance made of a niobium-hafnium type alloy.
- This alloy has high mechanical properties, by combining a very high elastic limit, greater than 600 MPa, and a very low modulus of elasticity, of the order of 60 GPa to 100 GPa. This combination of properties is well suited for a spiral spring. In addition, such an alloy is paramagnetic.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Springs (AREA)
- Heat Treatment Of Steel (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19173114.0A EP3736639A1 (de) | 2019-05-07 | 2019-05-07 | Herstellungsverfahren einer spiralfeder für uhrwerk |
| EP21170773.2A EP3889691B1 (de) | 2019-05-07 | 2019-05-07 | Uhrspiralfeder aus nb-hf-legierung |
| US16/831,913 US11550263B2 (en) | 2019-05-07 | 2020-03-27 | Method for manufacturing a balance spring for a horological movement |
| JP2020068864A JP2020183940A (ja) | 2019-05-07 | 2020-04-07 | 計時器用ムーブメントのためのバランスばねを製造する方法 |
| CN202010372078.1A CN111913380A (zh) | 2019-05-07 | 2020-05-06 | 制造钟表机芯的游丝的方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19173114.0A EP3736639A1 (de) | 2019-05-07 | 2019-05-07 | Herstellungsverfahren einer spiralfeder für uhrwerk |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21170773.2A Division EP3889691B1 (de) | 2019-05-07 | 2019-05-07 | Uhrspiralfeder aus nb-hf-legierung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3736639A1 true EP3736639A1 (de) | 2020-11-11 |
Family
ID=66448420
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19173114.0A Pending EP3736639A1 (de) | 2019-05-07 | 2019-05-07 | Herstellungsverfahren einer spiralfeder für uhrwerk |
| EP21170773.2A Active EP3889691B1 (de) | 2019-05-07 | 2019-05-07 | Uhrspiralfeder aus nb-hf-legierung |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21170773.2A Active EP3889691B1 (de) | 2019-05-07 | 2019-05-07 | Uhrspiralfeder aus nb-hf-legierung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11550263B2 (de) |
| EP (2) | EP3736639A1 (de) |
| JP (1) | JP2020183940A (de) |
| CN (1) | CN111913380A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115079542A (zh) * | 2021-03-16 | 2022-09-20 | 尼瓦罗克斯-法尔股份公司 | 用于钟表机芯的螺旋弹簧 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4123393A1 (de) | 2021-07-23 | 2023-01-25 | Nivarox-FAR S.A. | Spiralfeder für uhrwerk |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0886195A1 (de) * | 1997-06-20 | 1998-12-23 | Montres Rolex Sa | Selbstkompensierende Spiralfeder für mechanische Uhrwerkunruhspiralfederoszillator und Verfahren zu deren Herstellung |
| EP1258786A1 (de) * | 2001-05-18 | 2002-11-20 | Montres Rolex Sa | Selbstkompensierende Feder für einen mechanischen Oszillator vom Unruh-Spiralfeder-Typ |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1521206A (fr) * | 1966-06-08 | 1968-04-12 | Vacuumschmelze Gmbh | Procédé pour la préparation d'alliages non ferromagnétiques dont le coefficient de température du module d'élasticité est réglable, ainsi que les produits conformes à ceux obtenus par le présent procédé ou procédé similaire |
| EP1039352B1 (de) * | 1999-03-26 | 2003-10-08 | Rolex Sa | Selbstkompensierende Spiralfeder für Uhrwerkspiralfederunruh und Verfahren zur Behandlung derselben |
| JP2005140674A (ja) * | 2003-11-07 | 2005-06-02 | Seiko Epson Corp | 時計用ばね、ぜんまい、ひげぜんまい、及び時計 |
| CN104583880B (zh) * | 2012-07-06 | 2018-07-13 | 劳力士有限公司 | 处理钟表组件表面的方法和由这种方法得到的钟表组件 |
| CN104603312B (zh) * | 2012-08-31 | 2016-08-17 | 西铁城控股株式会社 | 机械式钟表用游丝材料和使用了它的游丝 |
| EP3040790A1 (de) * | 2014-12-29 | 2016-07-06 | Montres Breguet S.A. | Uhr oder Schmuckgegenstand aus einer leichten hochwertigen Legierung auf Titanbasis |
| EP3252542B1 (de) * | 2016-06-01 | 2022-05-18 | Rolex Sa | Teil zur befestigung einer unruhspirale |
| EP3422116B1 (de) | 2017-06-26 | 2020-11-04 | Nivarox-FAR S.A. | Spiralfeder eines uhrwerks |
-
2019
- 2019-05-07 EP EP19173114.0A patent/EP3736639A1/de active Pending
- 2019-05-07 EP EP21170773.2A patent/EP3889691B1/de active Active
-
2020
- 2020-03-27 US US16/831,913 patent/US11550263B2/en active Active
- 2020-04-07 JP JP2020068864A patent/JP2020183940A/ja active Pending
- 2020-05-06 CN CN202010372078.1A patent/CN111913380A/zh active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0886195A1 (de) * | 1997-06-20 | 1998-12-23 | Montres Rolex Sa | Selbstkompensierende Spiralfeder für mechanische Uhrwerkunruhspiralfederoszillator und Verfahren zu deren Herstellung |
| EP1258786A1 (de) * | 2001-05-18 | 2002-11-20 | Montres Rolex Sa | Selbstkompensierende Feder für einen mechanischen Oszillator vom Unruh-Spiralfeder-Typ |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115079542A (zh) * | 2021-03-16 | 2022-09-20 | 尼瓦罗克斯-法尔股份公司 | 用于钟表机芯的螺旋弹簧 |
| EP4060424A1 (de) * | 2021-03-16 | 2022-09-21 | Nivarox-FAR S.A. | Spiralfeder für uhrwerk |
| US11898225B2 (en) | 2021-03-16 | 2024-02-13 | Nivarox-Far S.A. | Spiral spring for a horological movement |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3889691B1 (de) | 2024-02-21 |
| US11550263B2 (en) | 2023-01-10 |
| JP2020183940A (ja) | 2020-11-12 |
| EP3889691A1 (de) | 2021-10-06 |
| CN111913380A (zh) | 2020-11-10 |
| US20200356057A1 (en) | 2020-11-12 |
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