Watch movement
AssigneeChronoswiss Uhren GmbH
InventorGerd-Rüdiger Lang
Life of this patent
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Abstract
Watch movement comprising a housing (26, 28, 30, 32, 34) and a gear train, formed from a series of spindles (36, 38, 40, 42), pivotably mounted on the housing, of which a first of said spindles (42) is provided with a shank (42a), for fixing a first hand (16) and a second of said spindles (50) is provided with a cylinder (50b), arranged co-axially to said shank, for fixing a second hand (20). According to the invention, the second spindle (50) is rotationally mounted on said housing (34) by means of a ball bearing (54).
Claims20
A watch movement including:
- a frame;
- and
- a gear train formed of wheel sets pivotably mounted on said frame, wherein a first of said wheel sets is provided with a shank for receiving a first hand and a second of said wheel sets is provided with a pipe disposed coaxially with said shank and intended to receive a second hand and wherein said second wheel set is rotatably mounted on said frame by means of a ball bearing fittingly maneuverable in a watch.
A watch including a watch movement with reduced friction in a watch case, the watch movement comprising:
- a gear train including a wheel set mounted on a train bridge parallel to a plane and including a cannon pinion friction mounted on said wheel set along an axis perpendicular to said plane, said cannon pinion including a shank at its tip to receive a first hand;
- and
- a pipe disposed coaxially with said shank to receive a second hand, said pipe fittingly mounted on a ball bearing to rotate freely on said cannon pinion inside the watch case.
A wristwatch movement with reduced friction, the movement manufactured by the process of:
- providing a gear train including a wheel set mounted on a train bridge parallel to a plane and including a cannon pinion friction mounted on said wheel set along an axis perpendicular to said plane, said cannon pinion including a shank at its tip to receive a first hand;
- and
- providing a pipe disposed coaxially with said shrank to receive a second hand, said pipe fittingly mounted on a ball bearing to rotate freely on said cannon pinion inside the wristwatch.
Dependencies are inferred from the claim text.