Global Patent Index - EP 3598242 A1

EP 3598242 A1 20200122 - CAM TIMEPIECE MECHANISM

Title (en)

CAM TIMEPIECE MECHANISM

Title (de)

UHRWERKSMECHANISMUS MIT NOCKE

Title (fr)

MECANISME HORLOGER A CAME

Publication

EP 3598242 A1 20200122 (FR)

Application

EP 18184529 A 20180719

Priority

EP 18184529 A 20180719

Abstract (en)

[origin: WO2020016818A1] The clockwork mechanism (1) according to the invention comprises a cam (4) that is intended to be driven in rotation, a cam follower (2) and a return spring (9) arranged so as to keep the cam follower (2) pressed against the cam (4), the return spring (9) being arranged so as to work within a predetermined range of winding angles during each rotation of the cam (4). The stiffness of the return spring (9) is zero or negative in at least part of the predetermined range.

Abstract (fr)

Le mécanisme horloger (1) selon l'invention comprend une came (4) destinée à être entraînée en rotation, un suiveur de came (2) et un ressort de rappel (9) agencé pour maintenir le suiveur de came (2) en appui contre la came (4), le ressort de rappel (9) étant agencé pour travailler dans une plage prédéterminée d'angles d'armage pendant chaque tour de rotation de la came (4). La raideur du ressort de rappel (9) est nulle ou négative dans au moins une partie de la plage prédéterminée.

IPC 8 full level

G04B 19/02 (2006.01); G04B 11/00 (2006.01); G04B 19/24 (2006.01)

CPC (source: EP)

G04B 11/00 (2013.01); G04B 19/02 (2013.01); G04B 19/24 (2013.01); G04F 7/0866 (2013.01)

Citation (applicant)

  • CH 702137 B1 20110513 - PATEK PHILIPPE SA GENEVE [CH]
  • EP 2241944 A2 20101020 - PATEK PHILIPPE SA GENEVE [CH]
  • EP 1746470 A1 20070124 - BREITLING AG [CH]
  • CHAO-CHIEH LAN ET AL.: "IEEE International Conférence on Robotics and Automation", 2011, SHANGHAI INTERNATIONAL CONFÉRENCE CENTER, article "Design of adjustable constant-force forceps for robot-assisted surgical manipulation"
  • CHIA-WEN HOU: "Functional joint mechanisms with constant-torque outputs", MECHANISM AND MACHINE THEORY, vol. 62, 2013, pages 166 - 181, XP028970320, DOI: doi:10.1016/j.mechmachtheory.2012.12.002

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3598242 A1 20200122; EP 3824354 A1 20210526; WO 2020016818 A1 20200123

DOCDB simple family (application)

EP 18184529 A 20180719; EP 19766359 A 20190718; IB 2019056140 W 20190718