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本帖最后由 chn6 于 2013-1-14 11:34 编辑
ROLEX 于上述擒纵专利之后的2010年12月8日,又提交了一个擒纵专利。
http://www.google.com.hk/patents/US20110149696
SWISS LEVER ESCAPEMENT
Raphaël Cettour-Baron et al
This Swiss lever escapement comprises an escape wheel having teeth, and a lever having on the one hand an entry pallet and an exit pallet that engage alternately with the teeth of the escape wheel, and on the other hand a fork that engages periodically with an impulse pin on a roller mounted on the staff of a regulator balance wheel. The relative width Lpl of each of said pallets, expressed as a percentage of the sum of the lengths of arc of one of said teeth and one of said pallets, measured at the circumference of the escape wheel is:
发明者: Raphaël Cettour-Baron, Alexandre Chiuvé
原受让人: ROLEX S.A.
当前美国分类号: 368/131
在美国专利商标局 (USPTO) 网站上查看专利
搜索美国专利商标局 (USPTO) 转让数据库
声明
1. A Swiss lever escapement comprising:
an escape wheel having teeth, and a lever,
wherein the lever comprises (i) an entry pallet and an exit pallet that engage alternately with the teeth of the escape wheel, and (ii) a fork that engages periodically with an impulse pin on a roller mounted on the staff of a regulator balance wheel,
wherein the relative width Lpl of each of said pallets, expressed as a percentage of the sum of the lengths of arc of one of said teeth and one of said pallets, measured at the circumference of the escape wheel, is:
Lpl = Ls Ls + d or Le Le + d ≤ 60 %
where Ls and Le are the lengths of arc of the exit pallet and entry pallet, respectively, and d is the length of arc of one escape wheel tooth.
2. The escapement as claimed in claim 1, in which said relative width Lpl of each of said pallets is ≦45%.
3. The escapement as claimed in claim 1, in which the ratio of the length of arc Ls, Le of the exit or entry pallet, respectively, to the length of arc d of one of the escape wheel teeth is less than 1:1.
4. The escapement as claimed in claim 1, in which the length of the impulse plane La of one of said pallets is less than 200 μm.
5. The escapement as claimed in claim 1, in which the ratio of the length of the impulse plane Lg of one of said teeth to the length of the impulse plane La of one of the pallets is more than 1.5:1.
6. The escapement as claimed in claim 1, in which the ratio of the lift angle of the balance wheel to the lift angle of the lever is from 3.7:1 to 7:1.
7. The escapement as claimed in claim 6, in which the ratio of the lift angle of the balance wheel to the lift angle of the lever is 4.5:1.
8. The escapement as claimed in claim 2, in which the ratio of the length of arc Ls, Le of the exit or entry pallet, respectively, to the length of arc d of one of the escape wheel teeth is less than 1:1.
9. The escapement as claimed in claim 2, in which the length of the impulse plane La of one of said pallets is less than 200 μm.
10. The escapement as claimed in claim 3, in which the length of the impulse plane La of one of said pallets is less than 200 μm.
11. The escapement as claimed in claim 8, in which the length of the impulse plane La of one of said pallets is less than 200 μm.
12. The escapement as claimed in claim 2, in which the ratio of the length of the impulse plane Lg of one of said teeth to the length of the impulse plane La of one of the pallets is more than 1.5:1.
13. The escapement as claimed in claim 3, in which the ratio of the length of the impulse plane Lg of one of said teeth to the length of the impulse plane La of one of the pallets is more than 1.5:1.
14. The escapement as claimed in claim 4, in which the ratio of the length of the impulse plane Lg of one of said teeth to the length of the impulse plane La of one of the pallets is more than 1.5:1.
15. The escapement as claimed in claim 8, in which the ratio of the length of the impulse plane Lg of one of said teeth to the length of the impulse plane La of one of the pallets is more than 1.5:1.
16. The escapement as claimed in claim 2, in which the ratio of the lift angle of the balance wheel to the lift angle of the lever is from 3.7:1 to 7:1.
17. The escapement as claimed in claim 3, in which the ratio of the lift angle of the balance wheel to the lift angle of the lever is from 3.7:1 to 7:1.
18. The escapement as claimed in claim 4, in which the ratio of the lift angle of the balance wheel to the lift angle of the lever is from 3.7:1 to 7:1.
19. The escapement as claimed in claim 5, in which the ratio of the lift angle of the balance wheel to the lift angle of the lever is from 3.7:1 to 7:1.
20. The escapement as claimed in claim 8, in which the ratio of the lift angle of the balance wheel to the lift angle of the lever is from 3.7:1 to 7:1.
专利图:
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