Patents Assigned to Silmach
  • Patent number: 10401192
    Abstract: Disclosed is a method for counting events occurring during a period T carried out by a mechanical counter including two toothed wheels with the same pitch, the occurrence of an event causing the rotation of each wheel by an angle corresponding to the pitch of the teeth thereof, the method including: counting or calculating, for each wheel at the end of T, the difference in the number of teeth between the initial and final position thereof, the step being at least partially carried out either by an optical unit, requiring the presence on each wheel of at least one marker, or by a unit for measuring the angular displacement of each wheel and associated calculation unit; and calculating the number of occurred events N in accordance with the difference between the values counted or measured and in accordance with the number of teeth of the wheels.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: September 3, 2019
    Assignees: ETAT FRANCAIS REPRESENTE PAR LE DELEGUE GENERAL POUR L'ARMEMENT, SILMACH
    Inventors: Pierre-Francois Louvigne, Patrice Minotti, Vianney Sadoulet, Pascal Girardin, Charles Haye
  • Patent number: 9939246
    Abstract: The disclosed micro-sensor includes: a substrate including a first portion and a second portion; a third portion and fourth portion provided between the portions and connected to the first portion and the second portion respectively by an elastic member; detection and a counter including: a counting gear, a third beam capable of meshing with the gear, an amplifier for the value of a relative movement between the portions and including: a first beam attached at one end thereof to the third portion and at the other end thereof to a plate, a second beam attached at one end thereof to the fourth portion and at the other end thereof to the plate, the third beam being attached on one side to the plate and including a tooth capable of meshing with the gear.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: April 10, 2018
    Assignees: ETAT FRANCAIS REPRESENTE PAR LE DELEGUE GENERAL POUR L'ARMEMENT, SILMACH
    Inventors: Pierre-Francois Louvigne, Patrice Minotti, Paul Vescovo, Vianney Sadoulet
  • Patent number: 9882510
    Abstract: The invention relates to a device including: a movable element (1) comprising teeth (11; 11i, i, 11i+1, 11i+2, 11i+3, 11i+4); a driving element (2) for engaging with the teeth (11; 11i, 11i+1, 11i+2, 11i+3, 11i+4) of the movable element (1) so as to set the movable element (1) in motion in a direction of movement; an actuator element (3) capable of generating an alternating movement so as to move the driving element (2) according to at least two phases, i.e.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: January 30, 2018
    Assignee: SILMACH
    Inventors: Patrice Minotti, Gilles Bourbon, Patrice Le Moal
  • Patent number: 9712085
    Abstract: An actuation device (1) which includes an actuation element (3) with a fixed 10 portion (31) and a driving portion (32); wherein the fixed portion (31) includes a crawling surface (311). The driving portion (32) includes a flexible moveable blade (321) positioned in parallel and at a distance from the crawling surface (311). When a power supply voltage is applied between the moveable blade (321) and the crawling surface (311), the free end (3211) comes into contact with the crawling surface (311), and a contact area, between the moveable blade (321) and the crawling surface (311), increases by propagation of the crawling front (3213) along the moveable blade (321). The propagation of the crawling front displaces the moveable blade (321) according to a first orientation.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: July 18, 2017
    Assignees: SILMACH, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), UNIVERSITE DE FRANCHE-COMTE
    Inventors: Patrice Le Moal, Gilles Bourbon, Patrice Minotti, Paul Vescovo
  • Patent number: 9140584
    Abstract: The present invention relates to the field of microsensors, and particularly to a passive and reversible deformation sensor, specifically cycles of deformations in a direction OX of a structure, specifically during cycles of temperatures or mechanical stresses to which the structure is subjected, this sensor including elements (4, 5, 6) for detecting and, preferably, counting cycles of variations in the distance between two points or areas of a structure, these elements including a support having first and second portions (41, 44) attachable to, respectively, either of the two points or areas of the structure, wherein the detecting elements are associated with each of the first and second portions of the support, sensor characterized by in that the detecting elements include elements (541, 542, 543, 551, 552, 553, 561, 562, 563) for distinguishing between at least two different thresholds of cycles of variations in distance.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: September 22, 2015
    Assignees: ETAT FRANCAIS REPRESENTE PAR LE DELEGUE GENERAL POUR L'ARMEMENT, SILMACH
    Inventors: Pierre-Francois Louvigne, Patrice Minotti, Paul Vescovo, Vincent Walter
  • Publication number: 20140292137
    Abstract: The subject matter here is an actuation device (1) comprising an actuation element (3) including a fixed portion (31) and a driving portion (32); wherein the fixed portion (31) includes a crawling surface (311), the driving portion (32) includes a flexible moveable blade (321) positioned in parallel and at a distance from the crawling surface (311), and wherein, when a power supply voltage is applied between the moveable blade (321) and the crawling surface (311), the free end (3211) comes into contact with the crawling surface (311), and a contact area, between the moveable blade (321) and the crawling surface (311), increases by propagation of the crawling front (3213) along the moveable blade (321), the propagation of the crawling front displacing the moveable blade (321) according to a first orientation.
    Type: Application
    Filed: November 26, 2013
    Publication date: October 2, 2014
    Applicants: SILMACH, UNIVERSITE DE FRANCHE-COMTE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Patrice Le Moal, Gilles Bourbon, Patrice Minotti, Paul Vescovo
  • Publication number: 20140060208
    Abstract: The present invention relates to the field of microsensors, and particularly to a passive and reversible deformation sensor, specifically cycles of deformations in a direction OX of a structure, specifically during cycles of temperatures or mechanical stresses to which the structure is subjected, this sensor including elements (4, 5, 6) for detecting and, preferably, counting cycles of variations in the distance between two points or areas of a structure, these elements including a support having first and second portions (41, 44) attachable to, respectively, either of the two points or areas of the structure, wherein the detecting elements are associated with each of the first and second portions of the support, sensor characterized by in that the detecting elements include elements (541, 542, 543, 551, 552, 553, 561, 562, 563) for distinguishing between at least two different thresholds of cycles of variations in distance.
    Type: Application
    Filed: April 20, 2012
    Publication date: March 6, 2014
    Applicants: SILMACH, ETAT FRANCAIS REPRESENTE PAR LE DELEGUE GENERAL POUR L'ARMEMENT
    Inventors: Pierre-Francois Louvigne, Patrice Minotti, Paul Vescovo, Vincent Walter
  • Patent number: 8058772
    Abstract: The invention concerns an element to be driven, a driving element designed to be urged into engagement with the element to be driven and an actuating element adapted to move the driving element so that it drives the element to be driven in step-by-step displacement, the driving element and the actuating element being formed by etching in a semiconductor material wafer. The invention is characterized in that it comprises elastic prestressing means for maintaining the driving element in contact with the element to be driven.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: November 15, 2011
    Assignee: Silmach
    Inventors: Patrice Minotti, Gilles Bourbon, Patrice Le Moal, Eric Joseph
  • Patent number: 7768161
    Abstract: A device comprising an element to be driven and a driving element designed to be urged into engagement with the element to be driven and an actuating element adapted to generate a reciprocating movement to move the driving element, the driving element and the actuating element being formed by etching in a semiconductor material block, are provided. During a first alternation (a) of the movement generated by the actuating element, the driving element is urged into engagement with the element to be driven to pull the element to be driven. During a second alternation (b) in the opposite direction generated by the actuating element, the driving element slides on the element to be driven, such that the element to be driven is displaced in a step-by-step movement by the driving element.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: August 3, 2010
    Assignee: Silmach
    Inventors: Patrice Le Moal, Gilles Bourbon, Patrice Minotti, Eric Joseph
  • Patent number: 7636277
    Abstract: A drive device formed by etching a wafer. The drive device includes a drive element that can sequentially mesh with a driven element and an actuating element that can displace the drive element according to a hysteresis movement thereby driving the driven element. Placement of the drive element on an outer edge of the wafer enables an interfacing of the drive element with a driven element placed opposite therefrom. A clockwork mechanism including a drive device of the aforementioned type and an input gear that can be rotationally driven by the drive device is also provided.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: December 22, 2009
    Assignee: Silmach
    Inventors: Patrice Minotti, Gilles Bourbon, Patrice Le Moal, Eric Joseph
  • Publication number: 20090096323
    Abstract: The invention concerns an element to be driven, a driving element designed to be urged into engagement with the element to be driven and an actuating element adapted to move the driving element so that it drives the element to be driven in step-by-step displacement, the driving element and the actuating element being formed by etching in a semiconductor material wafer. The invention is characterized in that it comprises elastic prestressing means for maintaining the driving element in contact with the element to be driven.
    Type: Application
    Filed: March 16, 2006
    Publication date: April 16, 2009
    Applicant: SILMACH
    Inventors: Patrice Minotti, Gilles Bourbon, Patrice Le Moal, Eric Joseph
  • Publication number: 20080150391
    Abstract: A device comprising an element to be driven and a driving element designed to be urged into engagement with the element to be driven and an actuating element adapted to generate a reciprocating movement to move the driving element, the driving element and the actuating element being formed by etching in a semiconductor material block, are provided. During a first alternation (a) of the movement generated by the actuating element, the driving element is urged into engagement with the element to be driven to pull the element to be driven. During a second alternation (b) in the opposite direction generated by the actuating element, the driving element slides on the element to be driven, such that the element to be driven is displaced in a step-by-step movement by the driving element.
    Type: Application
    Filed: March 15, 2006
    Publication date: June 26, 2008
    Applicant: SILMACH
    Inventors: Patrice Le Moal, Gilles Bourbon, Patrice Minotti, Eric Joseph