Abstract:
A method for treating a surface (2) of a base (1) of a timepiece component (10), in particular a balance spring, e.g. a balance spring made of a paramagnetic NbZr alloy, includes: a first step of depositing a first layer (41) of a first oxide or first nitride or first carbide; and a second step of depositing a second layer (51) of a second oxide or second nitride or second carbide.
Abstract:
The invention relates to a barrel spring (2) including: an inner end (5) and an outer end; a first portion (50) having a first height (H); a second portion (52) having a second height (h) that is smaller than the first height (H) and being located near the inner end (5); and, at the second portion, e.g. at the inner end, a first attachment element (51) suitable for being attached to the barrel shaft, wherein the second portion is to be inserted into a circumferentially extending groove provided on the barrel shaft.
Abstract:
A mechanism (3′) for correcting a device for displaying time information, the display device comprising a first display member (M) for displaying first time information and a second display member (M′) for displaying the stored first information, notably a second display member (M′) of the retrograde type, the mechanism comprising an isolating device (LI) for isolating the first and second display members.
Abstract:
Spring (30) for clock mechanism, the spring comprising a body (31) extending between a first end (32) of the spring and a second end (33) of the spring, the spring being intended to be mechanically connected to a housing at each of the first and second ends, the spring comprising, between the first and the second end, at least one member (37) intended to act by contact on an element of the clock mechanism.
Abstract:
Clock movement (2) comprising a mechanism (3) for indicating and storing the time information, the mechanism comprising a member (S′) for displaying the stored seconds and/or stored fractions of seconds, a first device (MEM1) for storing seconds and/or fractions of seconds, the storage device comprising a first storage mobile (M1) provided with a first storage element (MC1) in direct mesh with an element (12) of a geartrain (11, 12, 13, 14, 15) of the clock movement or a first storage element fixed to an element of a geartrain of the clock movement.
Abstract:
Mechanism (3) for indicating and storing time information, the mechanism comprising: a member (H) for displaying the hours, and/or a member (M) for displaying the minutes, and/or a member (S) for displaying the seconds, and a member (H′) for displaying the stored hours, and/or a member (M′) for displaying the stored minutes, and a member (S′) for displaying the stored seconds.
Abstract:
The present invention relates to long decay phosphors comprising rare earth activated strontium aluminates and methods for producing them. The phosphors comprise a matrix of the formula Sr4Al14O25 comprising europium as an activator and a further rare earth element as a co-activator, wherein the molar ratio of Al/Sr in the starting materials is in the range of 3.1 to less than 3.5 and the ratio of Eu/Sr is in the range of 0.0015 to 0.01. The process for the preparation of a phosphor comprises the steps of milling the starting materials for the synthesis of the phosphor, the starting materials comprising a boron compound selected from boric acid, boric oxide or a borate salt in an amount such that the B/Sr molar ratio is between 0.1 and to 0.3, treating the milled composition with heat, grinding the block material which is obtained through the heat treatment, ball-milling the crushed material, sieving the material, and washing the material with an aqueous solution.
Abstract translation:本发明涉及包含稀土活化的锶铝酸盐的长衰减磷光体及其制备方法。 磷光体包含式Sr4Al14O25的基质,其包含作为活化剂的铕和作为助活化剂的另外的稀土元素,其中原料中Al / Sr的摩尔比在3.1至小于3.5的范围内, Eu / Sr的比例在0.0015〜0.01的范围内。 制备荧光体的方法包括以下步骤:研磨用于合成荧光体的原料,所述起始材料包含选自硼酸,氧化硼或硼酸盐的硼化合物,其量使得B / Sr 摩尔比在0.1和0.3之间,用热处理研磨的组合物,研磨通过热处理获得的块材料,球磨研磨破碎的材料,筛分材料,并用水溶液洗涤材料。
Abstract:
The metal matrix composite material for a horological component comprises a metal alloy based on gold, with at least 75% by weight of gold, or based on platinum, with at least 95% by weight of platinum, or based on palladium, with at least 95% by weight of palladium, the composite material further including between 0.1% and 2% by weight, or even between 0.5% and 2% by weight, or even between 0.5% and 1.5% by weight, or even between 0.5% and 1.25% by weight, or even between 0.5% and 1% by weight, of at least one hardening element, and a reinforcing material, in a proportion by mass of between 1% and 10%, or even between 1% and 5%, the reinforcing material including ceramic particles.
Abstract:
Escapement device, comprising: a first escapement mobile element, a second escapement mobile element, an inertial element, arranged to present oscillations comprising a first vibration and a second vibration, a blocking mobile element comprising: a first blocking surface portion, a second blocking surface portion, an impulse receiver, arranged to receive a first impulse during a first vibration, and to receive a second impulse during a second vibration, an impulse transmitter, characterized in that the first blocking surface portion is arranged so that a first force, exerted by the first escapement mobile element, passes in the vicinity of the fourth axis of rotation, and in that the second blocking surface portion is arranged so that a second force, exerted by the second escapement mobile element, passes in the vicinity of the fourth axis of rotation.
Abstract:
Escapement device, comprising: first escapement mobile element comprising a plurality of first blocking surfaces and a first drive toothing forming a first main drive toothing, a second escapement mobile element comprising a plurality of second blocking surfaces and a second drive toothing forming a second main drive toothing, an inertial element, a blocking mobile element, comprising: blocking surface portions, arranged to come into contact with the first escapement mobile element and with the second escapement mobile element, an impulse receiver, an impulse transmitter, characterized in that: the second main drive toothing and the first main drive toothing are engaged together and cooperate with the blocking mobile element in the same plane.