EP2241944A3 - Instantaneous counter mechanism and snail cam for such mechanism - Google Patents

Instantaneous counter mechanism and snail cam for such mechanism Download PDF

Info

Publication number
EP2241944A3
EP2241944A3 EP10003428.9A EP10003428A EP2241944A3 EP 2241944 A3 EP2241944 A3 EP 2241944A3 EP 10003428 A EP10003428 A EP 10003428A EP 2241944 A3 EP2241944 A3 EP 2241944A3
Authority
EP
European Patent Office
Prior art keywords
snail cam
counter
snail
cam
rocker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10003428.9A
Other languages
German (de)
French (fr)
Other versions
EP2241944A2 (en
EP2241944B1 (en
Inventor
Pierre-Maurice Rochat
Philip Barat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP2241944A2 publication Critical patent/EP2241944A2/en
Publication of EP2241944A3 publication Critical patent/EP2241944A3/en
Application granted granted Critical
Publication of EP2241944B1 publication Critical patent/EP2241944B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Transmission Devices (AREA)

Abstract

Le mécanisme de compteur instantané comprend une came escargot (3) entraînée en rotation par un axe (4) qui porte une roue de chronographe (6); une bascule (1) de compteur, soumise à l'action d'un ressort, comportant un palpeur (2) prenant appui sur la périphérie de la came escargot (3) et un cliquet (8) coopérant sous l'action d'un ressort de cliquet (9) avec la denture en dent de loup d'une roue de compteur. La came escargot (3) comporte une fente (20), s'étendant sur une portion d'arc (c) comprise entre 30° et 90°, séparant du corps central de la came escargot une partie terminale (21) dont l'extrémité forme la partie la plus haute (H) de la came escargot (3); le palpeur (2) de la bascule (1) comportant une fraisure (22) donnant passage à ladite partie terminale (21) de la came escargot (3).

Figure imgaf001
The instant counter mechanism comprises a snail cam (3) rotated by an axis (4) carrying a chronograph wheel (6); a rocker (1) counter, subjected to the action of a spring, having a probe (2) bearing on the periphery of the snail cam (3) and a pawl (8) cooperating under the action of a ratchet spring (9) with the wolf teeth of a counter wheel. The snail cam (3) has a slot (20), extending over an arc portion (c) of between 30 ° and 90 °, separating from the central body of the snail cam an end portion (21) of which end forms the uppermost portion (H) of the snail cam (3); the probe (2) of the rocker (1) having a countersink (22) giving passage to said end portion (21) of the snail cam (3).
Figure imgaf001
EP10003428.9A 2009-04-15 2010-03-30 Instantaneous counter mechanism Active EP2241944B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00602/09A CH700753B1 (en) 2009-04-15 2009-04-15 Mechanism of instantaneous counter and snail cam for such a mechanism.

Publications (3)

Publication Number Publication Date
EP2241944A2 EP2241944A2 (en) 2010-10-20
EP2241944A3 true EP2241944A3 (en) 2016-12-07
EP2241944B1 EP2241944B1 (en) 2018-02-21

Family

ID=42110353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10003428.9A Active EP2241944B1 (en) 2009-04-15 2010-03-30 Instantaneous counter mechanism

Country Status (2)

Country Link
EP (1) EP2241944B1 (en)
CH (1) CH700753B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH707233A1 (en) * 2012-11-22 2014-05-30 Eterna Ag Uhrenfabrik Minutzenzähler a watch, in particular a chronograph.
EP3324245A1 (en) 2016-11-17 2018-05-23 Nogerah SA Instantaneous drive system and chronograph mechanism provided with such a system
EP3598243B1 (en) 2018-07-19 2022-10-19 Patek Philippe SA Genève Timepiece mechanism with jumping member
EP3598242A1 (en) 2018-07-19 2020-01-22 Patek Philippe SA Genève Cam timepiece mechanism
EP3907563B1 (en) 2020-05-07 2022-09-14 Patek Philippe SA Genève Timepiece mechanism comprising a pivot member

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB720618A (en) * 1952-06-16 1954-12-22 British Thermostat Co Ltd Improvements in or relating to fluid-metering devices
WO2004025141A1 (en) * 2002-09-14 2004-03-25 Jonathan Barnett Improved snail cam
EP1953612A2 (en) * 2007-02-05 2008-08-06 Patek, Philippe SA Device for driving and regulating an instantaneous counter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB720618A (en) * 1952-06-16 1954-12-22 British Thermostat Co Ltd Improvements in or relating to fluid-metering devices
WO2004025141A1 (en) * 2002-09-14 2004-03-25 Jonathan Barnett Improved snail cam
EP1953612A2 (en) * 2007-02-05 2008-08-06 Patek, Philippe SA Device for driving and regulating an instantaneous counter

Also Published As

Publication number Publication date
EP2241944A2 (en) 2010-10-20
CH700753A2 (en) 2010-10-15
CH700753B1 (en) 2014-03-14
EP2241944B1 (en) 2018-02-21

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