Abstract:
PROBLEM TO BE SOLVED: To provide a simple, reliable and robust device capable of performing inversion correction of a retrograde system.SOLUTION: The device includes: a cam 2 of a profile including a flank 23; a lever 4 for driving an indicator member; and a follower 3 controlling the lever 4, the follower 3 being adapted to be pressed against the cam 2 by first spring means 6 and to control a motion of the lever 4 intended to drive a motion of the indicator member during movement of the flank 23 in a first direction of movement of the cam 2. The follower 3 controlling the lever 4 is adapted to be moved relative to the lever 4 against a reaction of second spring means 5 by an action force exerted on the follower 3 by the flank 23 of the cam 2 during movement of the flank 23 in a second direction of movement of the cam 2.
Abstract:
PROBLEM TO BE SOLVED: To improve problems of nonvertical growth of deposited metal and formation of bubbles above a resin when a second electrodeposited layer is not entirely superposed on a first layer.SOLUTION: A photoresist layer is applied on a metal substrate and heated; the layer is exposed through a mask to UV irradiation and developed by dissolving a part not photocured so as to obtain a mold; a first layer of metal or of an alloy is electrodeposited in an open part of the mold; the metal structure and the mold are levelled by machining so as to obtain a planar upper surface; and a metal basecoat layer is deposited on the entire upper surface. Then these steps are repeated. A second layer of metal or an alloy is electrodeposited in the open part of the mold; the multilayer metal structure thus obtained with a cured photoresist is detached from the substrate by interlayer delamination; the photoresist is separated so as to free the multilayer metal structure; and a portion of the metal basecoat layer which is not inserted between two electrodeposited metal layers is removed.
Abstract:
PROBLEM TO BE SOLVED: To provide a process for fabricating a monolayer or multilayer metal structure in LIGA technology.SOLUTION: In the process, a photoresist layer is deposited on a flat metal substrate; a photoresist mold is created by irradiation or electron bombardment or ion bombardment; a metal or alloy is electroplated in this mold; the electroformed metal structure is detached from the substrate; and the photoresist is separated from this metal structure. In the process, the metal substrate is used as an agent involved in the forming of at least one surface of the metal structure other than a surface formed by the plane surface of the substrate.
Abstract:
PROBLEM TO BE SOLVED: To provide a watch case in which the number of components is further reduced.SOLUTION: A watch case includes: a trunk 3; a first cylinder 1 having first indexing means 1a; a control crown C including a cap 4 having a unique sign S on a front face 4' and a bearing cylinder 5 intended to be connected to a movement of a watch; and a second cylinder 2 fixed to the trunk 3, and configured to receive the bearing cylinder 5. The watch case is characterized in that the control crown C and the first cylinder 1 include screwing means 1b and 4b by which they are screwed into each other. The watch case is also characterized in that second indexing means 3a fixed to the trunk 3 is arranged to cooperate with the first indexing means 1a of the first cylinder 1, and that when the second cylinder 2 is fixed to the trunk 3, the first cylinder 1 and the second cylinder 2 are made to fit into each other so that the first cylinder 1 is surely fixed to the trunk 3 in an axial direction.
Abstract:
PROBLEM TO BE SOLVED: To provide a solution for pivoting of a balance wheel of a timepiece movement that optimizes energy loss and overall performance of the balance wheel simultaneously while reducing a flat-hanging difference.SOLUTION: By combining the balance wheel for the timepiece movement which obeys a condition of D×f/I≤20×10mkgsin which D is a diameter of the balance wheel, f is a frequency and I is the moment of inertia, with a pivot device, for a quality factor as a function of amplitude for a horizontal position indicated by a curve 22 and a quality factor for a vertical position indicated by a curve 23, the flat-hanging difference is substantially reduced as illustrated by closeness of the two curves 22 and 23 over the entire amplitude range.
Abstract:
PROBLEM TO BE SOLVED: To provide a timepiece allowing certain reading on the date by synchronization between jumps for months and for days-of-the-month.SOLUTION: The timepiece comprises: an indicator dial (40); a days-of-the-month mechanism (1) comprising a days-of-the-month mobile (10) and stepper drive member (13) for driving the days-of-the-month mobile (10); and a months mobile (30) which is coaxial with the days-of-the-month mobile, placed beneath said dial (40), and connected to the days-of-the-month mobile (10) by stepper drive means (12, 20) formed so that the months mobile (30) turns through an angle of 30° each month. The dial (40) has twelve windows (41) that are angularly equidistant and the months mobile (30) supports a distinctive zone (32) of which the trajectory passes through said windows (41) and of which the maximum angular extent is 30° and the minimum angular extent corresponds to that of said windows (41).
Abstract:
PROBLEM TO BE SOLVED: To provide a balance spring of a balance oscillator for a watch component which can be made by using a low density material such as silicon, diamond or quartz and its manufacturing method.SOLUTION: The present invention relates to a balance spring which has at least one leaf 2 having a cross section of a certain thickness and height. The leaf 2 extends in the height direction of the leaf 2 and has a plurality of opening 3 arranged in a staggered condition with a bridge 5. The present invention also relates to a method for manufacturing of such balance spring.
Abstract:
PROBLEM TO BE SOLVED: To provide a device and a method for the connection and the locking of two parts, a ball bar comprising a movable inner stop, a method for manufacturing this ball bar and the uses of this ball bar. SOLUTION: The device for the connection and the locking of two parts (30a, 30b) comprises: a female part (10) comprising two bars (12); a male part (21) cooperating with this female part (10); and a hinged flap (17), and is characterized in that each bar (12) contains two balls (2a, 2b), and at least one movable inner stop (5) arranged between the balls (2a, 2b), and the axial length of the movable stop (5) plus the diameters of the two balls (2a, 2b) is greater than the distance between the two lateral faces of the branch (11a, 11b) in which the ball bar (12) is situated. COPYRIGHT: (C)2011,JPO&INPIT