公开(公告)号：US3352103A

公开(公告)日：1967-11-14

申请号：US49721765

申请日：1965-10-18

Applicant: EBAUCHESFABRIK ETA AG

Inventor： URS GIGER

IPC: G04B19/253

CPC classification number: G04B19/25373

Abstract: 1,131,205. Date indicators. ETA A.G. EBAUCHES-FABRIK. Feb.4, 1966 [April 20, 1965], No.4965/66. Heading G3T. A calendar watch possessing an instantaneous date changing motion comprises a date indicating ring 7, capable of being driven by the watch movement and an entrainment member 9 carried by a driving spring 8 and operatively engaging the date indicating ring, the driving spring being mounted on a control wheel 5. The control wheel 5 is continuously driven by an hour wheel 2 via a reduction gear 6. The entrainment member 9 engages a tooth 10 of the date ring 7 so that as the wheel 5 rotates, the spring 8 tensions until the entrainment member reaches a rigid portion 20 of a hub 17 which is an integral part of the wheel 5. The force exerted by the spring on the tooth 10 then causes a detent 12, biased by a spring 15, to move out of engagement with another tooth and thereby allow the entrainment member 9 to advance the date ring 7. Reverse indexing of the date ring 7 during backward setting of the ravels is prevented by a cam surface 21 which pulls the entrainment member 9 out of engagement with the teeth 10.

公开(公告)号：US2933883A

公开(公告)日：1960-04-26

申请号：US62809056

申请日：1956-12-13

Applicant: EBAUCHESFABRIK ETA AG

Inventor： URS GIGER

IPC: G04B18/02

CPC classification number: G04B18/028

公开(公告)号：US3082594A

公开(公告)日：1963-03-26

申请号：US10849961

申请日：1961-05-08

Applicant: EBAUCHESFABRIK ETA AG

Inventor： HEINRICH STAMM ,  URS GIGER

IPC: G04B19/253

CPC classification number: G04B19/25373 ,  Y10T74/1523